당신은 주제를 찾고 있습니까 “two factor 인증 – 2 단계 인증이란 무엇입니까? (2FA)“? 다음 카테고리의 웹사이트 https://hu.taphoamini.com 에서 귀하의 모든 질문에 답변해 드립니다: https://hu.taphoamini.com/photos/. 바로 아래에서 답을 찾을 수 있습니다. 작성자 Duo Security 이(가) 작성한 기사에는 조회수 360,664회 및 좋아요 1,199개 개의 좋아요가 있습니다.
이중 인증 절차(2FA: 2-factor authentication)란 로그인을 시도한 주체가 계정의 실제 소유자인지 확인하여 계정을 더욱 안전하게 보호하는 추가 보안 절차입니다. 즉, 사용자 이름과 비밀번호를 입력한 후, 추가로 요청받은 정보를 입력해야 계정 접근 권한을 얻게 됩니다.
Table of Contents
two factor 인증 주제에 대한 동영상 보기
여기에서 이 주제에 대한 비디오를 시청하십시오. 주의 깊게 살펴보고 읽고 있는 내용에 대한 피드백을 제공하세요!
d여기에서 2 단계 인증이란 무엇입니까? (2FA) – two factor 인증 주제에 대한 세부정보를 참조하세요
Two-factor authentication is one of the best ways to protect against remote attacks such as phishing, credential exploitation and other attempts to takeover your accounts.
Learn more about two-factor authentication at http://duo.sc/why2FA
two factor 인증 주제에 대한 자세한 내용은 여기를 참조하세요.
2단계 보안인증(2FA, Two-factor authentication) 적용
2단계 보안인증(2FA, Two-factor authentication) 적용 · 2단계 인증(2FA)은 사용자 계정으로의 무단 액세스 방지를 위한 보안설정 입니다. · 두가지 과정을 …
Source: help.dfinery.io
Date Published: 8/30/2022
View: 2281
멀티팩터 인증 (Multi-Factor Authentication) – 네이버 블로그
멀티팩터 인증은 단어의 의미 그대로 2개 이상의 팩터를 이용하여 인증하는 방식을 의미합니다. 아직까지는 2가지의 팩터만 사용하는 경우가 대부분이므로 …
Source: m.blog.naver.com
Date Published: 10/16/2022
View: 9214
What Is Two-Factor Authentication (2FA)? – Authy
2FA is an extra layer of security used to make sure that people trying to gain access to an online account are who they say they are. First, a user will enter …
Source: authy.com
Date Published: 5/16/2021
View: 8309
two factor 인증 사용하기
구글 OTP 를 적용하려는 서버에 로그인 한 후에 two factor 인증을 사용하려는 계정(예: lesstif)으로 google-authenticator 명령어를 실행하며 각 옵션의 의미는 다음과 …
Source: www.lesstif.com
Date Published: 10/7/2021
View: 5965
2단계 인증 사용 – Android – Google 계정 고객센터
2단계 인증을 사용하면 비밀번호가 도용되는 경우에 대비하여 계정 보안을 한층 강화할 수 있습니다. 2단계 인증을 설정한 후에는 다음을 사용하여 계정에 로그인할 수 …
Source: support.google.com
Date Published: 1/15/2022
View: 8165
Two-factor authentication for Apple ID – Apple Support
Two-factor authentication is an extra layer of security for your Apple ID designed to ensure that you’re the only person who can access your …
Source: support.apple.com
Date Published: 7/2/2021
View: 4096
How two-factor authentication works on Facebook.
Two-factor authentication is a security feature that helps protect your Facebook account in addition to your password. If you set up two-factor …
Source: www.facebook.com
Date Published: 4/22/2021
View: 2263
What is Two-Factor Authentication (2FA) and How Does It Work?
Two-factor authentication (2FA), sometimes referred to as two-step verification or dual-factor authentication, is a security process in which users prove …
Source: www.techtarget.com
Date Published: 12/13/2022
View: 73
주제와 관련된 이미지 two factor 인증
주제와 관련된 더 많은 사진을 참조하십시오 2 단계 인증이란 무엇입니까? (2FA). 댓글에서 더 많은 관련 이미지를 보거나 필요한 경우 더 많은 관련 기사를 볼 수 있습니다.
주제에 대한 기사 평가 two factor 인증
- Author: Duo Security
- Views: 조회수 360,664회
- Likes: 좋아요 1,199개
- Date Published: 2016. 6. 2.
- Video Url link: https://www.youtube.com/watch?v=0mvCeNsTa1g
멀티팩터 인증 (Multi-Factor Authentication)
2017년 열린 블랙햇 컨퍼런스에서 해커 250명을 대상으로 설문조사를 한 결과, 해킹하기 가장 힘든 것으로 응답자의 38%가 멀티팩터 인증(Multi-Factor Authentication, MFA)을 꼽았으며, 기업의 민감한 데이터로 접근하는 가장 쉽고 빠른 방법으로는 ‘높은 권한을 가진 계정의 탈취’라는 응답이 가장 많았다고 합니다.
위의 설문조사 결과를 종합해보면 멀티팩터 인증을 적용하여 계정의 보안성을 강화하는 것이 보안사고를 방지하는데 가장 효과적인 방법중의 하나라고 볼 수 있겠습니다. 최근 들어 많은 곳에서 적용하고 있는 멀티팩터 인증에 대하여 알아보겠습니다.
■ 사용자 인증에서 ‘팩터(Factor)’의 의미
사용자의 신원을 확인하는 방법에 따라 지식기반 인증, 소유기반 인증, 속성기반 인증의 3가지의 카테고리로 나누어 지는데 이를 ‘인증 팩터(Authentication Factor)라고 합니다.
Factor의 구분 설명 적용 예 지식기반(Knowledge) 사용자만 알고 있는 것 “What you know” – 패스워드, PIN코드, 미리 설정해놓은 질문답변 등 소유기반(Possession) 사용자만 소유하고 있는 것 “What you have” – 휴대폰 SMS인증, 보안카드, OTP 등 – 공인인증서, 스마트폰, 스마트카드, USB토큰, 기타 하드웨어키 등 속성기반(Inherence) 사용자만의 고유한 속성 “What you are” – 지문인식, 홍채인식, 정맥인식, 얼굴인식 등
[표1. 3 Categories of Authentication Factor]가장 많이 사용하는 ID/PW 인증은 ‘알고 있는 정보’이므로 지식기반 팩터에 해당합니다. 휴대폰 잠금을 해제할 때 입력하는 PIN코드나 사전에 설정해놓은 질문답변 등도 이에 해당하며, 가장 손쉽고 편리하게 사용 가능하지만 유출되기도 가장 쉽다는 단점이 있습니다.
소유기반의 팩터는 사용자가 ‘가지고 있는 것’을 통해 인증하는 있는 방법으로, 휴대폰 SMS인증, OTP, 스마트카드, USB토큰 등이 있습니다. 소유기반 인증을 적용할 경우 물리적으로 도난을 당할 수 있으며, 본인일지라도 인증 시 소유하고 있지 않으면 인증할 수 없는 것이 단점입니다.
사람의 고유한 속성을 기반으로 하는 인증은 생체인증(Biometrics) 방식에 해당하며, 대표적인 지문인식 외에도, 홍채인식, 얼굴인식 등 새로운 기술이 계속 발전하고 있습니다. 편리하지만 인식에 오류가 발생할 수 있으며 추가적인 장치가 필요합니다. 또한 생체인증 정보는 변경이 불가능하므로 정보가 탈취될 경우 가장 큰 피해를 입을 수 있습니다.
■ 멀티팩터 인증
1. 싱글팩터 인증과 멀티팩터 인증
3가지 인증 팩터 중, 한 가지의 팩터만을 이용하여 인증할 경우 싱글팩터 인증(Single Factor Authentication, SFA)이라고 합니다. 멀티팩터 인증은 단어의 의미 그대로 2개 이상의 팩터를 이용하여 인증하는 방식을 의미합니다. 아직까지는 2가지의 팩터만 사용하는 경우가 대부분이므로 투팩터 인증(2 Factor Authentication, 2FA)이라는 단어가 많이 사용되고 있습니다.
멀티팩터 인증에서는 최대 3가지의 팩터를 중첩하여 사용할 수 있겠으나, 최근 들어 더 강화된 인증을 위한 4번째 팩터로서 위치정보나 시간정보 등이 거론되기도 합니다. 그러나 4번째 팩터로 거론되는 항목들도 엄밀히는 기존의 3가지 분류에 포함되는 것으로 보며, 완전한 4번째의 팩터로 인정되기 보다는 인증을 강화하는 추가적인 요소 정도로 여겨지고 있습니다.
[그림1. 멀티팩터 인증 (이미지출처:구글검색)]2. 투팩터 인증과 2단계 인증
일반적으로 소유기반 팩터로 여겨지는 휴대폰 SMS, 보안카드, OTP 인증 등에 대해서는 논란의 여지가 있습니다. 인증에 필요한 것이 소유한 물건 자체가 아니라 그로부터 ‘알게 된 정보’이기 때문에 지식기반 팩터라는 의견이 있으며, 실제로 해킹이나 보이스피싱과 같은 사회공학적 방법으로 소유하지 않고도 필요한 인증 값을 탈취하는 사례가 많이 발생하고 있습니다.
위와 같은 관점으로 보면 ID/PW 인증 후에 휴대폰 SMS나 OTP 인증 등을 추가 적용하는 경우, 지식기반 팩터를 2번 사용하는 형태라고 하여 2단계 인증(2 Step Verification, 2SV)이라고 불리며, 강화된 형태의 싱글팩터 인증으로 분류하기도 합니다.
인증 팩터의 분류에서 2가지 이상의 팩터를 기반으로 해야 투팩터 인증 혹은 멀티팩터 인증이라고 할 수 있습니다. ATM에서 현금을 인출할 때는 현금카드(소유기반)와 계좌 비밀번호(지식기반) 두 가지가 필요한데, 이런 경우는 완전한 투팩터 인증에 해당합니다.
■ 다양한 인증방식
멀티팩터 인증에 적용할 수 있는 다양한 인증 방식 몇 가지를 살펴보겠습니다.
1. 휴대폰 SMS 메시지
휴대폰 SMS를 통한 1회성 인증 코드를 사용하는 방식으로, 우리나라에서는 2단계 인증 방식으로 가장 많이 사용하고 있습니다. 스마트폰이 아니어도 사용이 가능하지만, 전송단계에서 가로채거나 SIM카드를 복사 등으로 쉽게 해킹될 수 있습니다. 또한 익명으로 사용하기 어렵고 통신 비용이 발생한다는 단점이 있습니다.
2. OTP 어플리케이션
대표적으로는 구글에서 제공하는 Google Authenticator이라는 스마트폰 어플리케이션이 있습니다. 스마트폰만 있으면 구글 OTP를 지원하는 사이트에서 무료로 사용할 수 있으며 쉽게 사용이 가능합니다.
네이버에서도 PC 로그인 시 사용할 수 있도록 네이버 모바일앱을 통한 OTP 기능을 제공하고 있습니다.
3. USB키
USB 안에 사용자의 인증정보를 담고 있는 물리적인 키의 형태로, USB를 꽂으면 인증이 이루어지는 방식입니다. 구글, 드롭박스, 페이스북 등에서 사용자 인증방식으로 제공하기 시작하는 등 조금씩 사용 범위가 확대되고 있습니다.
USB키는 인증정보를 키보드로 입력하는 방식이 아니기 때문에 피싱과 같은 공격에 강하며, 최초 설정 후에는 USB포트에 꽂기만 하면 되므로 사용이 편리합니다. 다만, USB키를 별도로 구매해야 하고, USB포트가 없는 장치에는 사용할 수 없으며, 따로 가지고 다녀야 한다는 단점이 있습니다.
4. 생체인식
지문인식, 홍채인식, 얼굴인식, 행동기반 인식 등 다양한 종류의 생체인식 기술은 다양한 분야에서 조금씩 적용되고 있으며, 최근에는 애플의 신제품인 아이폰X에 FaceID라는 얼굴인식 기술을 도입했다고 하여 화제가 되고 있습니다.
생체인식은 종류에 따라 전혀 다른 방법으로 적용되며, 인식률의 오류나 추가 장비 설치의 제약이 있으므로 인증 환경에 따라 적용방법을 신중히 검토하여 적용하여야 합니다.
■ 나아가며
멀티팩터 인증에서 사용자가 OTP카드와 같은 인증 요건을 잃어버렸을 경우 다른 방식으로 인증을 받을 수 있도록 하는 백업플랜을 제공해야 하며, 이때 최초의 인증방법과 같은 레벨로 제공하여 인증 강도가 약해지지 않도록 해야 합니다.
인증을 강화하기 위한 방식으로 멀티팩터 인증이 각광받고 있으나, 최소 2가지 이상의 인증 방식을 적용해야 하므로 사용자 편의성은 나빠질 수 밖에 없습니다. 특히 수많은 이용자를 대상으로 하는 웹사이트나 모바일 어플리케이션 등의 환경에서는 인증 강도와 편의성의 적절한 접점을 찾아 적용할 수 있도록 고민이 필요할 것입니다.
네이버도 이용자에게 편리한 서비스를 제공하면서 개인정보를 보호할 수 있도록 그 접점을 찾아 항상 노력하고 있습니다. 감사합니다.
* 이 글은 NAVER 개인정보보호 공식 페이스북을 통해서도 소개해드리고 있습니다.
작성｜ 2017.11.08. NAVER Privacy&Security
What Is Two-Factor Authentication (2FA)?
And why aren’t passwords good enough?
Before addressing the question ‘what is two-factor authentication’ or ‘what is 2FA,’ let’s consider why it’s important to do everything you can to improve your online account security. With so much of our lives happening on mobile devices and laptops, it’s no wonder our digital accounts have become a magnet for criminals. Malicious attacks against governments, companies, and individuals are more and more common. And there are no signs that the hacks, data breaches, and other forms of cybercrime are slowing down!
Luckily, it’s easy for businesses to add an extra level of protection to user accounts in the form of two-factor authentication, also commonly referred to as 2FA.
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ARE YOU A DEVELOPER INTERESTED IN ADDING 2FA TO YOUR APPLICATION? SEE TWILIO APIs & TUTORIALS
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Rise in Cybercrime Requires Stronger Security With 2FA
In recent years, we’ve witnessed a massive increase in the number of websites losing personal data of their users. And as cybercrime gets more sophisticated, companies find their old security systems are no match for modern threats and attacks. Sometimes it’s simple human error that has left them exposed. And it’s not just user trust that can be damaged. All types of organizations—global companies, small businesses, start-ups, and even non-profits—can suffer severe financial and reputational loss.
For consumers, the after-effects of targeted hack or identity theft can be devastating. Stolen credentials are used to secure fake credit cards and fund shopping sprees, which can damage a victim’s credit rating. And entire bank and cryptocurrency accounts can be drained overnight. A recent study revealed that in 2016 over $16 billion was taken from 15.4 million U.S. consumers. Even more incredible, identify thieves stole over $107 billion in the past six years alone.
Clearly, online sites and apps must offer tighter security. And, whenever possible, consumers should get in the habit of protecting themselves with something that’s stronger than just a password. For many, that extra level of security is two-factor authentication.
Passwords: Historically Bad But Still In Use
How and when did passwords get so vulnerable? Back in 1961, the Massachusetts Institute of Technology developed the Compatible Time-Sharing System (CTSS). To make sure everyone had an equal chance to use the computer, MIT required all students to log in with a secure password. Soon enough, students figured out that they could hack the system, print out the passwords, and hog more computer time.
Despite this, and the fact that there are much more secure alternatives, usernames and passwords remain the most common form of user authentication. The general rule of thumb is that a password should be something only you know while being difficult for anyone else to guess. And while using passwords is better than having no protection at all, they’re not foolproof. Here’s why:
Humans have lousy memories. A recent report looked at over 1.4 billion stolen passwords and found that most were embarrassingly simple. Among the worst are “111111,” “123456,” “123456789,” “qwerty,” and “password.” While these are easy to remember, any decent hacker could crack these simple passwords in no time.
Too many accounts: As users get more comfortable with doing everything online, they open more and more accounts. This eventually creates too many passwords to remember and paves the way for a dangerous habit: password recycling. Here’s why hackers love this trend: it takes just seconds for hacking software to test thousands of stolen sign-in credentials against popular online banks and shopping sites. If a username and password pair is recycled, it’s extremely likely it’ll unlock plenty of other lucrative accounts.
Security fatigue sets in: To protect themselves, some consumers try to make it harder for attackers by creating more complex passwords and passphrases. But with so many data breaches flooding the dark web with user information, many just give up and fall back to using weak passwords across multiple accounts.
2FA To The Rescue
2FA is an extra layer of security used to make sure that people trying to gain access to an online account are who they say they are. First, a user will enter their username and a password. Then, instead of immediately gaining access, they will be required to provide another piece of information. This second factor could come from one of the following categories:
Something you know: This could be a personal identification number (PIN), a password, answers to “secret questions” or a specific keystroke pattern
Something you have: Typically, a user would have something in their possession, like a credit card, a smartphone, or a small hardware token
Something you are: This category is a little more advanced, and might include biometric pattern of a fingerprint, an iris scan, or a voice print
With 2FA, a potential compromise of just one of these factors won’t unlock the account. So, even if your password is stolen or your phone is lost, the chances of a someone else having your second-factor information is highly unlikely. Looking at it from another angle, if a consumer uses 2FA correctly, websites and apps can be more confident of the user’s identity, and unlock the account.
Common Types of 2FA
If a site you use only requires a password to get in and doesn’t offer 2FA, there’s a good chance that it will be eventually be hacked. That doesn’t mean that all 2FA is the same. Several types of two-factor authentication are in use today; some may be stronger or more complex than others, but all offer better protection than passwords alone. Let’s look at the most common forms of 2FA.
Hardware Tokens for 2FA
Probably the oldest form of 2FA, hardware tokens are small, like a key fob, and produce a new numeric code every 30-seconds. When a user tries to access an account, they glance at the device and enter the displayed 2FA code back into the site or app. Other versions of hardware tokens automatically transfer the 2FA code when plugged into a computer’s USB port.
They’ve got several downsides, however. For businesses, distributing these units is costly. And users find their size makes them easy to lose or misplace. Most importantly, they are not entirely safe from being hacked.
SMS Text-Message and Voice-based 2FA
SMS-based 2FA interacts directly with a user’s phone. After receiving a username and password, the site sends the user a unique one-time passcode (OTP) via text message. Like the hardware token process, a user must then enter the OTP back into the application before getting access. Similarly, voice-based 2FA automatically dials a user and verbally delivers the 2FA code. While not common, it’s still used in countries where smartphones are expensive, or where cell service is poor.
For a low-risk online activity, authentication by text or voice may be all you need. But for websites that store your personal information — like utility companies, banks, or email accounts — this level of 2FA may not be secure enough. In fact, SMS is considered to be the least secure way to authenticate users. Because of this, many companies are upgrading their security by moving beyond SMS-based 2FA.
Software Tokens for 2FA
The most popular form of two-factor authentication (and a preferred alternative to SMS and voice) uses a software-generated time-based, one-time passcode (also called TOTP, or “soft-token”).
First, a user must download and install a free 2FA app on their smartphone or desktop. They can then use the app with any site that supports this type of authentication. At sign-in, the user first enters a username and password, and then, when prompted, they enter the code shown on the app. Like hardware tokens, the soft-token is typically valid for less than a minute. And because the code is generated and displayed on the same device, soft-tokens remove the chance of hacker interception. That’s a big concern with SMS or voice delivery methods.
Best of all, since app-based 2FA solutions are available for mobile, wearables, or desktop platforms — and even work offline — user authentication is possible just about everywhere.
Push Notification for 2FA
Rather than relying on the receipt and entry of a 2FA token, websites and apps can now send the user a push notification that an authentication attempt is taking place. The device owner simply views the details and can approve or deny access with a single touch. It’s passwordless authentication with no codes to enter, and no additional interaction required.
By having a direct and secure connection between the retailer, the 2FA service, and the device, push notification eliminates any opportunity for phishing, man-in-the-middle attacks, or unauthorized access. But it only works with an internet-connected device, one that’s able to install apps to. Also, in areas where smartphone penetration is low, or where the internet is unreliable, SMS-based 2FA may be a preferred fall-back. But where it is an option, push notifications provide a more user-friendly, more secure form of security.
Other Forms of Two-Factor Authentication
Biometric 2FA, authentication that treats the user as the token, is just around the corner. Recent innovations include verifying a person’s identity via fingerprints, retina patterns, and facial recognition. Ambient noise, pulse, typing patterns, and vocal prints are also being explored. It’s only a matter of time before one of these 2FA methods takes off…and for biometric hackers to figure out how to exploit them.
Everybody Should 2FA
According to a recent report, stolen, reused, and weak passwords remain a leading cause of security breaches. Unfortunately, passwords are still the main (or only) way many companies protect their users. The good news is that cybercrime is in the news so much that 2FA awareness is quickly growing and usres are demanding that the companies they do business with have improved security. We agree: “Everybody Should 2FA”
Want To Learn More About 2FA?
Consumers: Don’t know if your favorite sites or apps have 2FA? Visit TwoFactorAuth.org to find out. Or visit the following links to learn more:
Businesses: Rather than building 2FA themselves, many businesses find that it’s smarter and more cost-effective to partner with an expert. Twilio offers a comprehensive suite of developer-friendly authentication APIs and an SDK that can turn any app into a self-branded authenticator. Check out these useful links for businesses and developers:
two factor 인증 사용하기
아래와 같이 scratch code 가 표시되는데 만약 폰을 분실했을 경우 아래 코드를 입력하면 OTP 로그인을 할 수 있으며 한번 사용한 코드는 재사용이 불가능합니다. 비상시에 대비한 복구 코드로 .ssh/google_authenticator 에 저장되어 있으며 유출될 경우 OTP 로그인이 가능해 지는 문제가 있으므로 판단해서 삭제하면 됩니다.
Your verification code is 323214 Your emergency scratch codes are: 73074445 94801293 33157957 70212597 49916872
2단계 인증 사용
2단계 인증을 사용하면 비밀번호가 도용되는 경우에 대비하여 계정 보안을 한층 강화할 수 있습니다. 2단계 인증을 설정한 후에는 다음을 사용하여 계정에 로그인할 수 있습니다.
비밀번호
휴대전화
2단계 인증 허용
Google 계정을 엽니다. 탐색 패널에서 보안을 선택합니다. ‘Google에 로그인’에서 2단계 인증 시작하기를 선택합니다. 화면에 표시되는 단계를 따릅니다.
도움말: 직장, 학교 또는 기타 그룹을 통해 계정을 사용하고 있으면 이 단계로 복구되지 않을 수도 있습니다. 2단계 인증을 설정할 수 없는 경우 관리자에게 문의하세요.
2단계로 본인 인증
2단계 인증을 사용 설정한 후에는 로그인할 때 본인 인증을 위해 2단계를 완료해야 합니다. 계정을 보호하기 위해 Google에서 지정된 2단계를 완료하도록 요청합니다.
Google 메시지 사용
중요: Google 메시지를 사용하려면 업데이트된 Google Play 서비스를 사용 중인 Android 휴대전화가 필요합니다.
Google에서는 Google 메시지를 2단계 보안 수단으로 사용하는 걸 권장합니다. 메시지는 인증 코드보다 입력하기가 쉬우며 SIM 스와프 및 기타 전화번호를 기반으로 한 해킹을 차단하는 데 도움이 됩니다.
Google 계정에서 Google 메시지를 받으려면 다음이 필요합니다.
Google 계정에 로그인된 Android 휴대전화
Google 계정에 로그인된 Smart Lock 앱 , Gmail app 또는 Google 앱 이 설치된 iPhone
알림에서 기기 및 위치 정보에 따라 다음을 할 수 있습니다.
예 를 탭하여 로그인을 허용합니다.
를 탭하여 로그인을 허용합니다. 아니요를 탭하여 로그인을 차단합니다.
다른 인증 방법 사용
다음의 경우 다른 인증 방법을 설정하세요.
피싱을 차단할 더 강력한 보호 기능을 원함
Google 메시지를 받을 수 없음
휴대전화를 분실함
실물 보안 키는 별도로 구매한 다음 로그인할 때 본인 인증에 사용할 수 있는 작은 기기입니다. Google에서 본인 인증을 요구할 때 휴대전화, 태블릿 또는 컴퓨터에 키를 연결하기만 하면 됩니다. 보안 키 주문하기 호환되는 휴대전화에 내장된 보안 키를 사용하여 새 기기에 로그인할 수도 있습니다. 도움말:보안 키를 사용하면 해커가 사용자를 속여 비밀번호나 기타 개인 정보를 얻어내려는 피싱 공격으로부터 Google 계정을 보호할 수 있습니다. 피싱 공격 자세히 알아보기
중요: 누구에게도 인증 코드를 제공하지 마세요. 인터넷 연결이나 모바일 서비스가 없는 경우 Google OTP 또는 일회성 인증 코드를 생성하는 다른 앱을 설정해도 됩니다. 본인 인증을 위해 로그인 화면에 인증 코드를 입력하세요.
중요: 누구에게도 인증 코드를 제공하지 마세요. 이전에 입력한 번호로 6자리 코드가 전송될 수 있습니다. 선택한 설정에 따라 문자 메시지(SMS) 또는 음성 전화로 코드가 전송됩니다. 본인 인증을 위해 로그인 화면에 코드를 입력하세요. 도움말: 2단계 인증은 어떤 형태로든 계정 보안을 강화하지만 문자 메시지나 전화로 전송되는 인증 코드는 전화번호 기반 해킹에 취약할 수 있습니다.
중요: 백업 코드는 절대로 아무한테도 알려주지 마세요. 8자리 백업 코드 모음을 인쇄하거나 다운로드하면 안전한 장소에 보관할 수 있습니다. 휴대전화를 분실한 경우 백업 코드가 유용합니다.
신뢰할 수 있는 기기에서 2단계 인증 건너뛰기
컴퓨터나 휴대전화에서 로그인할 때마다 2단계 인증을 진행하고 싶지 않다면 ‘이 컴퓨터에서 다시 요청하지 않음’ 체크박스를 선택하세요.
중요: 정기적으로 사용하며 다른 사용자와 공유하지 않는 기기에서만 이 체크박스를 선택하세요.
Two-factor authentication for Apple ID
With two-factor authentication, only you can access your account on a trusted device or the web. When you want to sign in to a new device for the first time, you’ll need to provide two pieces of information—your password and the six-digit verification code that’s automatically displayed on your trusted devices or sent to your phone number. By entering the code, you’re verifying that you trust the new device. For example, if you have an iPhone and are signing into your account for the first time on a newly purchased Mac, you’ll be prompted to enter your password and the verification code that’s automatically displayed on your iPhone.
Because your password alone is no longer enough to access your account, two-factor authentication dramatically improves the security of your Apple ID and all the personal information you store with Apple.
Once signed in, you won’t be asked for a verification code on that device again unless you sign out completely, erase the device, or need to change your password for security reasons. When you sign in on the web, you can choose to trust your browser, so you won’t be asked for a verification code the next time you sign in from that computer.
What is Two-Factor Authentication (2FA) and How Does It Work?
What are authentication factors? There are several ways in which someone can be authenticated using more than one authentication method. Currently, most authentication methods rely on knowledge factors, such as a traditional password, while two-factor authentication methods add either a possession factor or an inherence factor. Authentication factors, listed in approximate order of adoption for computing, include the following: A knowledge factor is something the user knows, such as a password, a personal identification number (PIN) or some other type of shared secret.
is something the user knows, such as a password, a personal identification number (PIN) or some other type of shared secret. A possession factor is something the user has, such as an ID card, a security token, a cellphone, a mobile device or a smartphone app, to approve authentication requests.
is something the user has, such as an ID card, a security token, a cellphone, a mobile device or a smartphone app, to approve authentication requests. A biometric factor , also known as an inherence factor , is something inherent in the user’s physical self. These may be personal attributes mapped from physical characteristics, such as fingerprints authenticated through a fingerprint reader. Other commonly used inherence factors include facial and voice recognition or behavioral biometrics, such as keystroke dynamics, gait or speech patterns.
, also known as an , is something inherent in the user’s physical self. These may be personal attributes mapped from physical characteristics, such as fingerprints authenticated through a fingerprint reader. Other commonly used inherence factors include facial and voice recognition or behavioral biometrics, such as keystroke dynamics, gait or speech patterns. A location factor is usually denoted by the location from which an authentication attempt is being made. This can be enforced by limiting authentication attempts to specific devices in a particular location or by tracking the geographic source of an authentication attempt based on the source Internet Protocol address or some other geolocation information, such as Global Positioning System (GPS) data, derived from the user’s mobile phone or other device.
is usually denoted by the location from which an authentication attempt is being made. This can be enforced by limiting authentication attempts to specific devices in a particular location or by tracking the geographic source of an authentication attempt based on the source Internet Protocol address or some other geolocation information, such as Global Positioning System (GPS) data, derived from the user’s mobile phone or other device. A time factor restricts user authentication to a specific time window in which logging on is permitted and restricts access to the system outside of that window. The vast majority of two-factor authentication methods rely on the first three authentication factors, though systems requiring greater security may use them to implement multifactor authentication (MFA), which can rely on two or more independent credentials for more secure authentication.
How does two-factor authentication work? Enabling two-factor authentication varies depending on the specific application or vendor. However, two-factor authentication processes involve the same general, multistep process: The user is prompted to log in by the application or the website. The user enters what they know — usually, username and password. Then, the site’s server finds a match and recognizes the user. For processes that don’t require passwords, the website generates a unique security key for the user. The authentication tool processes the key, and the site’s server validates it. The site then prompts the user to initiate the second login step. Although this step can take a number of forms, the user has to prove that they have something only they would have, such as biometrics, a security token, an ID card, a smartphone or other mobile device. This is the inherence or possession factor. Then, the user may have to enter a one-time code that was generated during step four. After providing both factors, the user is authenticated and granted access to the application or website.
Elements of two-factor authentication Two-factor authentication is a form of MFA. Technically, it is in use any time two authentication factors are required to gain access to a system or service. However, using two factors from the same category doesn’t constitute 2FA. For example, requiring a password and a shared secret is still considered SFA as they both belong to the knowledge authentication factor type. 2FA involves two of three potential authentication factors. As far as SFA services go, usernames and passwords are not the most secure. One problem with password-based authentication is it requires knowledge and diligence to create and remember strong passwords. Passwords require protection from many insider threats, such as carelessly stored sticky notes with login credentials, old hard drives and social engineering exploits. Passwords are also prey to external threats, such as hackers using brute-force, dictionary or rainbow table attacks. Given enough time and resources, an attacker can usually breach password-based security systems and steal corporate data. Passwords have remained the most common form of SFA because of their low cost, ease of implementation and familiarity. Multiple challenge-response questions can provide more security, depending on how they are implemented, and standalone biometric verification methods can also provide a more secure method of SFA.
Types of two-factor authentication products There are many different devices and services for implementing 2FA — from tokens to radio frequency identification (RFID) cards to smartphone apps. Two-factor authentication products can be divided into two categories: tokens that are given to users to use when logging in; and infrastructure or software that recognizes and authenticates access for users who are using their tokens correctly. Authentication tokens may be physical devices, such as key fobs or smart cards, or they may exist in software as mobile or desktop apps that generate PIN codes for authentication. These authentication codes, also known as one-time passwords (OTPs), are usually generated by a server and can be recognized as authentic by an authentication device or app. The authentication code is a short sequence linked to a particular device, user or account and can be used only once as part of an authentication process. Organizations need to deploy a system to accept, process and allow or deny access to users authenticating with their tokens. This may be deployed in the form of server software or a dedicated hardware server, as well as provided as a service by a third-party vendor. An important aspect of 2FA is ensuring the authenticated user is given access to all resources the user is approved for and only those resources. As a result, one key function of 2FA is linking the authentication system with an organization’s authentication data. Microsoft provides some of the infrastructure necessary for organizations to support 2FA in Windows 10 through Windows Hello, which can operate with Microsoft accounts, as well as authenticate users through Microsoft Active Directory, Azure AD or Fast IDentity Online (FIDO).
How 2FA hardware tokens work Hardware tokens for 2FA are available supporting different approaches to authentication. One popular hardware token is the YubiKey, a small Universal Serial Bus (USB) device that supports OTPs, public key encryption and authentication, and the Universal 2nd Factor protocol developed by the FIDO Alliance. YubiKey tokens are sold by Yubico Inc., based in Palo Alto, Calif. When users with a YubiKey log in to an online service that supports OTPs — such as Gmail, GitHub or WordPress — they insert their YubiKey into the USB port of their device, enter their password, click in the YubiKey field and touch the YubiKey button. The YubiKey generates an OTP and enters it in the field. The OTP is a 44-character, single-use password; the first 12 characters are a unique ID that represents the security key registered with the account. The remaining 32 characters contain information that is encrypted using a key known only to the device and Yubico’s servers, established during the initial account registration. The OTP is sent from the online service to Yubico for authentication checking. Once the OTP is validated, the Yubico authentication server sends back a message confirming this is the right token for this user. 2FA is complete. The user has provided two factors of authentication: The password is the knowledge factor, and the YubiKey is the possession factor.
Two-factor authentication for mobile devices Smartphones offer a variety of 2FA capabilities, enabling companies to use what works best for them. Some devices can recognize fingerprints, use the built-in camera for facial recognition or iris scanning, and use the microphone for voice recognition. Smartphones equipped with GPS can verify location as an additional factor. Voice or Short Message Service (SMS) may also be used as a channel for out-of-band authentication. A trusted phone number can be used to receive verification codes by text message or automated phone call. A user has to verify at least one trusted phone number to enroll in mobile 2FA. Apple iOS, Google Android and Windows 10 all have apps that support 2FA, enabling the phone itself to serve as the physical device to satisfy the possession factor. Duo Security, based in Ann Arbor, Mich., and purchased by Cisco in 2018 for $2.35 billion, has a platform that enables customers to use their trusted devices for 2FA. Duo’s platform first establishes that a user is trusted before verifying the mobile device can also be trusted as an authentication factor. Authenticator apps replace the need to obtain a verification code via text, voice call or email. For example, to access a website or web-based service that supports Google Authenticator, users type in their username and password — a knowledge factor. Users are then prompted to enter a six-digit number. Instead of having to wait a few seconds to receive a text message, an authenticator generates the number for them. These numbers change every 30 seconds and are different for every login. By entering the correct number, users complete the verification process and prove possession of the correct device — an ownership factor. These and other 2FA products offer information on the minimum system requirements necessary to implement 2FA. Biometric authentication has become an increasingly popular option on mobile devices.
Push notifications for 2FA A push notification is passwordless authentication that verifies a user by sending a notification directly to a secure app on the user’s device, alerting the user that an authentication attempt is happening. The user can view details of the authentication attempt and either approve or deny access — typically, with a single tap. If the user approves the authentication request, the server receives that request and logs the user in to the web app. Push notifications authenticate the user by confirming that the device registered with the authentication system — usually a mobile device — is in the possession of the user. If an attacker compromises the device, the push notifications are also compromised. Push notifications eliminate threats such as man-in-the-middle attacks, unauthorized access and social engineering attacks. While push notifications are more secure than other forms of authentication methods, there are still security risks. For example, users could accidentally approve a fraudulent authentication request because they are used to tapping approve when they receive push notifications.
Is two-factor authentication secure? While two-factor authentication does improve security, 2FA schemes are only as secure as their weakest component. For example, hardware tokens depend on the security of the issuer or manufacturer. One of the most high-profile cases of a compromised two-factor system occurred in 2011 when security company RSA Security reported its SecurID authentication tokens had been hacked. The account recovery process itself can also be subverted when it is used to defeat two-factor authentication because it often resets a user’s current password and emails a temporary password to allow the user to log in again, bypassing the 2FA process. The business Gmail accounts of the chief executive of Cloudflare were hacked in this way. Although SMS-based 2FA is inexpensive, easy to implement and considered user-friendly, it is vulnerable to numerous attacks. The National Institute of Standards and Technology (NIST) has discouraged the use of SMS in 2FA services in its Special Publication 800-63-3: Digital Identity Guidelines. NIST concluded that OTPs sent via SMS are too vulnerable due to mobile phone number portability attacks, attacks against the mobile phone network and malware that can be used to intercept or redirect text messages.
키워드에 대한 정보 two factor 인증
다음은 Bing에서 two factor 인증 주제에 대한 검색 결과입니다. 필요한 경우 더 읽을 수 있습니다.
이 기사는 인터넷의 다양한 출처에서 편집되었습니다. 이 기사가 유용했기를 바랍니다. 이 기사가 유용하다고 생각되면 공유하십시오. 매우 감사합니다!
사람들이 주제에 대해 자주 검색하는 키워드 2 단계 인증이란 무엇입니까? (2FA)
- 2fa
- two-factor athentication
- multi-factor authentication
- infosec
- information security
- Information Technology
- two step verificiation
- two factor authentication
2 #단계 #인증이란 #무엇입니까? #(2FA)
YouTube에서 two factor 인증 주제의 다른 동영상 보기
주제에 대한 기사를 시청해 주셔서 감사합니다 2 단계 인증이란 무엇입니까? (2FA) | two factor 인증, 이 기사가 유용하다고 생각되면 공유하십시오, 매우 감사합니다.
