Twitter using Google blacklist to filter malicious links

A security researcher has discovered that Twitter is using new controls to combat the rising tide of malware against its users.

Twitter has quietly started using a Google blacklist of suspected phishing and malware pages to filter malicious URLs leading to known malware sites.

Twitter hasn't announced it, but F-Secure's chief research officer Mikko Hypponen revealed how it was starting to filter tweets that linked to known malware sites.

According to his blog posting, users are given a warning message when they attempt to click on a link that leads to a blacklisted site.

He later confirmed - on Twitter - that the microblogging site was using Google Safe Browsing API, an experimental API that allows client applications to check URLs against an updated Google blacklist.

Twitter has become a bigger target for hackers taking advantage of its explosion in popularity.

This Easter, Twitter suffered four separate worm attacks that encouraged users to click on a link which infected them and made them automatically send out messages to friends with the same link.

Twitter has not replied to request for comment by time of writing.

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