Most federal workers understand the wisdom of using different passwords for each online service they use. But sometimes, even that’s not enough. Yahoo confirmed that a hacker group stole, then posted 450,000 unencrypted user-names and passwords from one of its services.

ComputerWorld reported Yahoo was downplaying the threat because most of the accounts were inactive. But the file included 100,000 G-mail account passwords and another 55,000 from Hotmail.

The hacker group calls itself D-33-Ds Company. Yahoo said it has patched the security hole in its server.

This story is part of Federal News Radio’s daily Cybersecurity Update. For more cybersecurity news, click here.

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