Wolf

Wolf is disguised anti-IC program is a Killer IV disguised as a Watchdog program. If triggered, the netrunner gets a Difficult ID roll (use System Knowledge and Programming skills, plus half your Interface ability) to detect its hidden ability. If the 'runner fails the roll, he is fooled by the program, and the Wolf gets a +1 to its initiative and attack rolls. Speedtrap will not detect Wolf, but Smarteye will. If you have SeeYa or Hidden Virtue running at the time of the encounter, they will ID the program as disguised, but not tell you its true nature.

Source

 * Chromebook Volume 1, pg.91