TechCrunch

Only a few weeks after Google’s Gmail service was blocked in China, a new report from online censorship monitoring organization GreatFire.org released this morning states that Microsoft’s email system Outlook was recently subjected to a “man-in-the-middle” attack in China. This is a form of eavesdropping where the attacker inserts himself in between the victims’ connections, relaying messages between them while the victims’ continue believe they have a secure, private connection. Meanwhile, the attacker is able to read all the content they’re sharing.

GreatFire.org was able to verify the attack itself, after receiving reports of its existence on January 17. It noted that IMAP and SMTP for Outlook were affected, but the web interfaces for Microsoft’s webmail services were not. (That is, Outlook.com and Login.live.com were not affected).

The attack continued for a about a day, and has since stopped, the report states.

Affected users were shown warning messages in their email…

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