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Research finds that the answers to secret questions used to retrieve forgotten passwords are easily guessed.
By watching how passwords are entered, a company hopes to make log-ins more secure.
A new service, backed by Google, lets you log in to any site using one Web account.
Millions of passwords have been stolen from companies such as LinkedIn and Yahoo. A new approach aims to prevent future heists.
The more we depend on the Web, the more passwords we accumulate—and forget. Some startups think they have a solution.
A new standard that gives phones and PCs a bigger role in authentication could disarm attacks that rely on stealing passwords.
A draft strategy would help users manage their identities online.