If Anonymous' exploits thrive on exploiting vulnerabilities in websites and databases, the group occasionally runs afoul of critics who apply the same techniques. Notably, the group this week saw its @Anon_Central Twitter account, which has 167,000 followers, compromised by the little known, rival hacktivist group Rustle League, the BBC reported. The hack placed the pro-Anonymous Twitter account in the dubious company of Burger King and Jeep, which had likewise had their Twitter feeds seized by unknown attackers.
"The reason Anonymous fell victim is probably human weakness," Graham Cluley, senior consultant at security firm Sophos, told the BBC. "Chances are that they followed poor password practices, like using the same password in multiple places or choosing a password that was easy to crack."