Recently a "worm" was discovered that used the Google search engine (along with others) to find certain vulnerable pHp:BB sites and then insinuated its way in and "defaced" the website. There are a couple of boards that I use that have been so infected. One of them has features similar to this board. Yet, I noticed that this board was not affected.
From what I have read pHpBB software is an "open source" software maintained by the pHpBB group. Just how vulnerable is a Linux system to something like this. Can it infect Linux servers? How about standalone Linux systems like home computers?