Last time I checked this forum had millions in BTC\USD in donations, but still hackers are hacking away at such old software and hacking in almost as easily as signing in with a password. Since I've been here, this is the 4th time this has happened.
This attack as nothing to do with old software, but rather the people at the company running the data center because this is a social engineering attack, not a technical one.
Can I ask, when the forum operators notice a hack is going on why don't you just turn the server or VPS off for a while? Nothing deters a planned attack then nothing to attack. But instead you leave the place up and running to all our passwords once again can get compromised.
Theymos, the administrator, did in fact turn off the server, the forum was shutdown when he noticed the attack to prevent the attacker from gaining too much information. Then the forum had 3 days of downtime as theymos got another hosting provider, reinstalled everything, and restored all the data.
You should check out Theymos's thread about the compromise here:
https://bitcointalksearch.org/topic/m.11445725