Rambo Tribble writes: Russian hacker, Kamil Hismatullin, has demonstrated a hack which allowed him to delete any videos on the site, in short order. The hack reportedly exploited a weakness that allowed a spurious authentication token when placing a takedown request. Mr. Hismatullin reported the hack to Google, which fixed the bug within hours and gave Hismatullin a $5,000 reward. Before reporting the flaw, Kamil says "... [for a] couple of hours I've fought the urge to clean up Bieber's channel." Ah, what might have been. The BBC has good coverage.