Bitcointalk is the largest community of bitcoin users,and this will always be a hacker target..

what will win the hacker if hack bitcointalk ??

most believe that if they manage to hack bitcointalk database and steal the user's information that will be able to access for example on users exchanges to still bitcoins to private messages e.g from bitcoin developments even  to learn who is the famous satoshi nakamoto
for that matter hackers are not wrong and most if not all users use the same email and passwords e.g same email and password to bitcointalk and same email to btc-e right there hackers betting

safety exists naturally not

Security is not exist generally there every day discovering new vulnerabilities |0-day exploits
if one wants to make a secure website that can not be attacked by hackers no one development programmer can't confirm that because its is impossible

I believe that each year must be organized a hacking challenge who can join in  security researchers|hackers| penetration testers which would aim to find vulnerabilities in bitcointalk forum and as a reward their will get bitcoins...