Two-factor authentication (2FA) is a verification process in which the user provides two different authentication factors to prove their identity. Credentials can be based on knowledge, possession, inherence, location or time. The goal of 2FA is to create a layered defense and make it more difficult for an unauthorized person to access a target such as a physical location, computing device, network or database. If one factor is compromised or broken, the attacker still has at least one more barrier to breach before successfully breaking into the target. Two-factor authentication is a type of multifactor authentication (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 same authentication factor type -- knowledge. Continue reading... Take today's Pop Quiz! 1. User names and passwords are examples of __________ authentication factors. Answer 2. Security tokens and USB security keys are examples of _________ authentication factors. Answer 3. Fingerprints and iris scans are examples of _______ authentication factors. Answer 4. NTP is a protocol used to synchronize computer clock times in a network. It is one of the oldest parts of the TCP/IP protocol suite. What does NTP stand for? a. Network Tempo Protocol b. Network Time Protocol Answer 5. Location awareness is a type of ___________ technology that delivers information about a device's physical location to another user or application. a. presence b. presents Answer |
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