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Micro-blogging site gets infected with the StalkDaily worm. Details about the worm are scarce, but there are tweets aplenty.
Security experts say be careful who you follow on Twitter, after worm attacks leave some users with infected profiles.
Like the first worm, the second "Mikeyy" worm posts unwanted messages on users' Twitter pages, some of which taunt the micro-blogging site to fix its security.