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Yahoo Says Hackers Breached Its Email Service

Yahoo today said its email service had been breached in what it called a “coordinated effort to gain unauthorized access.” It didn’t share many details, such as how many accounts were affected. But it did say that the user names and passwords used to carry out the attack may have come from a third-party database that was compromised in a separate attack. Yahoo said it is prompting affected users to change their passwords, but today is probably as good a day as any to change yours, even if it wasn’t affected. Yahoo said it is also working with federal law enforcement to find and prosecute the attackers.

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