Tumblr worm automatically spreads hacker group’s trolling gospel

Popular blogging site Tumblr is reportedly in the grips of a rapidly auto-reposting worm similar to the one that struck Twitter two years ago. The worm’s main symptom is a message from GNAA, a group of hackers whose exclusive purpose seems to be “annoyance warfare” and trolling. When users click on an infected Tumblr and they’re logged in, the mess…

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