Why asking this question when Bitcointalk has been able to remain operational since over 15 years ago? Did you think there were no hackers that tried to take over this forum? You are an old member, you know this.
Just because no one managed to shut bitcointalk down doesn't mean that it can't happen in the future so this thread could serve as a good reminder for theymos that he has to keep up with security (which I am sure that he is already doing, but not a bad thing to remind about it every once in a while).
Regarding 4chan hack and data leak, luckily I only lurked there long time ago and never registered so I should be safe.