Originally posted by: DeviousTrap
I highly recommend SMF (simple machines forum) over PhpBB. PhpBB is full of security holes and you'll find yourself constantly upgrading it.
And SMF isn't? PHPBB is the #1 freeware forum, so it's the #1 target for exploits. The holes are discovered and fixed pretty quickly. SMF has a fairly long list of security patches too. It's just that SMF is a relatively minor player, they're not targeted as frequently, so the exploits are not discovered as rapidly.
Whatever forum you use, you
MUST stay on top of the updates and bugfixes. Installing SMF isn't going to protect you against hacks, they're still out there, likely will be for all of eternity and your forum will remain vulnerable if you don't install patches as they're released.