Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. A message authentication code (MAC), or tag, is a security code that is typed in by the user ...

A password alone will not protect sensitive information from hackers--two-factor authentication is also necessary. Here's what security pros and users need to know about two-factor authentication.

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

The combination of authentication server and authenticator, which may be separate devices or both reside in the same unit such as an access point or network access server. The authentication server ...

We're at a crossroads where authentication protocols and mechanisms need a complete refresh to combat the security breaches involving the exploitation of vulnerabilities, social engineering attacks ...

Using two or more different forms of identification to authenticate a user. The common single-factor method employs one password. For more security, multi-factor authentication (MFA) adds at least one ...

Key exchange with unilateral authentication (short: unilateral key exchange) is an important primitive in practical security protocols; a prime example is the widely deployed TLS protocol, which is ...

Now that vacation season’s coming to an end, it’s a good moment to review the security of your online accounts, or at the very least - beef up your security knowledge. Let’s start from here: ...