After Gmail blocked in China, Microsoft's Outlook hacked, says GreatFire

BEIJING- Chinese users of Microsoft Corp's Outlook email service were subject to a hacking attack at the weekend, just weeks after Google Inc's Gmail system was blocked in China, an online censorship watchdog said on Monday.

People using email clients like Outlook, Mozilla's Thunderbird and apps on their phone with the SMTP and IMAP email protocols, which are used to send and receive messages, around Saturday were subject to a "man-in-the-middle" (MITM) attack, said China-based GreatFire.org.