phpBB is an open-source forum software that is very popular and widely used. This makes it an ideal target for spammers. The phpBB developers therefore implemented an improved Captcha in version 3.0. But spammers have already adapted to this and have implemented improved bots that are able to break the new Captcha and to automatically create junk posts. In the following I will describe five anti-spam measures that effectively reduce spam in every phpBB 3.x instance. The main goal of these measures is to block as many spam posts as possible without affecting normal forum users.
CNERIS is a company formed by young entrepreneurs from different sectors of the world of information. Our team consists of programmers, system administrators, graphic designers.