Portal Tibia

Portal Tibia hosts mirrors for the Tibia client, and in February it was suspected that these executable files have been modified. Such a modification could put players' accounts at risk. In fact, the file size of the official client is 100kB less than that of Portal Tibia's. This change has been discovered^[1][2] by anti-virus software as malicious. The fansite administrator responded to one thread, stating that their website may have been compromised to change the download links:

(...) Portal Tibia uses [used] to just redirect the client link to Tibia.com, but suddenly this link was changed to a suspect IP. As this issue happened again this week, I've just disabled the download session for a while so we can study this case and find out how it ocurred and make sure it wont happen again.