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多重要素验证（英语：Multi-factor authentication，缩写为 MFA），又译多因子认证、多因素验证、多因素认证，是一种电脑访问控制的方法，用户要通过两种以上的认证机制之后，才能得到授权，使用电脑资源[1][2]。例如，用户要输入PIN码，插入银行卡，最后再经指纹比对，通过这三种认证方式，才能获得授权。这种认证方式可以提高安全性。
多重要素验证的概念也广泛应用于计算机系统以外的各领域。例如许多国家使用的自助出入境检查系统允许旅客不经人工检查即可通过边境检查。使用时，通常需要旅行证件扫描、指纹、面部特征三种要素结合来验证身份。
认证因素
知识：例如用户名及密码
持有的物件：例如独立的设备、安全令牌、身份证、提款卡等等
生物特征：例如人脸识别、指纹识别
所在的位置
双重认证多表需要两种不同的要素，例如系统需用户名及密码，这两样均属同一要素（知识），不属双重认证。 但如果系统需要用户名及密码外，还需要指纹识别，便是双重认证了。 如果系统需要用户名及密码外，还需要安全令牌，也是双重认证。
双重认证
双重认证（英语：Two-factor authentication，缩写为2FA），又译为双重验证、双因子认证、双因素认证、二元认证，是多重要素验证中的一个特例，使用两种不同的元素，合并在一起，来确认用户的身份。
举例
使用银行卡时，需要另外输入个人标识符，确认之后才能使用其转账功能。
登录校园网系统时，通过手机短信或学校指定的手机软件进行验证。
登录Steam和Uplay等游戏平台时，使用手机令牌或Google身份验证器进行验证。
Authenticator apps, such as Authy, Google Authenticator, and Microsoft Authenticator, are a more secure form of MFA than one-time codes sent to you via SMS. We recommend enabling MFA to protect yourself from the consequences of a data breach, and it's among the steps you should take if you discover your information has already been involved in a breach. These apps also help protect you against stealthy attacks like stalkerware.
Top 10 Multi-Factor Authentication (MFA) Software
- Google Authenticator.
- Microsoft Authenticator.
- LastPass.
- Salesforce Platform.
- IBM Security Verify.
- Duo Security.
- Twilio Verify API.
- Frontegg.
- JumpCloud Protect
- ESET Secure Authentication
- ManageEngine ADSelfService Plus
- Thales SafeNet Trusted Access
- HID Identity and Access Management
- Cisco Secure Access by Duo
- Microsoft Azure AD
- Okta Adaptive Multi-Factor Authentication
- Ping Identity Multi-Factor Authentication
- RSA SecurID
SecureAuth Arculixady been involved in a breach. These apps also help protect you against stealthy attacks like stalkerware.
Multi-factor authentication (MFA) is a simple way to protect your personal information. It’s an added layer of security that, along with your password, verifies account ownership and makes doubly sure you are who you say you are. Consider the following statistics about MFA.
HOW DOES MFA WORK?
MFA requires users to present two or more authentication credentials at login to verify their identity. Each additional authentication credential added to the login process increases security.
It is recommended that you use MFA for all personal accounts containing critical information such as:
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