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+----- Thread: World of Warcraft: Secret watermark in screenshots (/thread-1395.html)
World of Warcraft: Secret watermark in screenshots - CtrlAltDestroy - 09-12-2012 04:58 AM
I don't play WoW, but this one has just been discovered and it is quite fascinating.
In World of Warcraft, most every screenshot you take contains a secret watermark that contains data for your account ID, the time the screenshot was taken, and the IP and data of the server you're playing on. It is speculated that this was mainly used to identify and punish internal leaking.
Source: http://www.ownedcore.com/forums/world-of-warcraft/world-of-warcraft-general/375573-looking-inside-your-screenshots.html
This was also confirmed by disassembling the executable; there is indeed a subroutine which applies a watermark onto your screenshots.