Microsoft rushes out fix after hackers reset passwords to hack Hotmail accounts

Graham Cluley
@gcluley

Microsoft says it has fixed a serious vulnerability in Hotmail, that was allowing hackers to reset account passwords, locking out the account’s real owner and giving attackers access to users’ inboxes.

News of the critical bug spread rapidly across underground hacking forums, and Whitec0de reported earlier this week that hackers were offering to break into any Hotmail account for as little as $20.

It appears that the vulnerability existed in Hotmail’s password reset feature. Hackers were able to use a Firefox add-on called Tamper Data to bypass the normal protections put in place to protect Hotmail accounts.

According to some reports, Moroccan hackers were actively taking advantage of the vulnerability and planned to reset the passwords of a list of 13 million Hotmail users in their possession.

Numerous videos, many…

Read more in my article on the Naked Security website.

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Graham Cluley is a veteran of the anti-virus industry having worked for a number of security companies since the early 1990s when he wrote the first ever version of Dr Solomon's Anti-Virus Toolkit for Windows. Now an independent security analyst, he regularly makes media appearances and is an international public speaker on the topic of computer security, hackers, and online privacy. Follow him on Twitter at @gcluley, or drop him an email.

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