“If you used the same password on Bitcointalk.org as on other sites, you may want to change your passwords,” Theymos wrote, adding that Bitcointalk.org will be offline for a while, but several people have backups of the forum.
The attackers also uploaded a PHP script and other files into an avatars directory. Theymos said a 50 BTC reward, worth about $6,500, is being offered to anyone who can figure out how the site was compromised.
“The forum won’t go back up until I know how this was done, so it could be down for a while,” Theymos wrote.
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