The major Dark Souls exploit that took servers offline has been published

From VGC: "The major Dark Souls exploit that forced Bandai Namco to pull all PC game servers offline in January has been publicly disclosed, as previously promised.

The PvP servers for the PC versions of the Dark Souls games were turned off in January, following the discovery of a severe remote code execution (RCE) vulnerability, which was said to allow abusers to take control of other players’ PCs."