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Two-Factor Authentication. The second lock.
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The Digital WorldGL-00061
Two-Factor Authentication
The second lock
A second proof of identity, needed even after the password is right.
GeekLibraryMechanism
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GL-00061Mechanism
A stolen password gets the thief to the door. Two-factor authentication (2FA) means there is a second door, and the key is in your pocket. After entering your password, you confirm your identity with a code sent to your phone or generated by an app. Two steps. Two barriers.
- Enable 2FA on email, banking, and social media accounts. These are the three highest-value targets.
- App-based codes (like Google Authenticator) are more secure than SMS codes, which can be intercepted.
SourceNIST authentication guidelines
Google security research
Google security research
Keep exploring
Because you read Two-Factor Authentication.
The Digital WorldGL-00055
The Password
Your weakest wall
A secret used to prove an account belongs to the person opening it.
GeekLibraryMechanism
The Digital WorldGL-00067
Cyberbullying
Words that follow you home
Cruelty carried out online, where it stays searchable and does not close.
GeekLibraryIdea
Money SenseGL-00017
Phishing
The message that pretends to be someone you trust
A message pretending to come from someone trusted, to steal information.
GeekLibraryMechanism