Jaca Epsilon 24 is an algorithm written by Rear Admiral Vadosia Adislo and Commander Jaca Traylor. It was designed specifically to work with the USS Unification A, by overlaying the ships sensor image with background noise, basically hiding the Unification from the sensor buoys scattered around the Gamma Quadrant.
The algorithm also had a small AI installed within it, to keep it one step ahead of anyone who picked it up. Though that was unlikely as it would often delete its presence and remains in some of the sensor buoys even after the Consortium threat was eliminated within Starfleet.
This essentially gave the Unification free movement throughout the sensor area, allowing Captain Jacob Lambert to conduct several guerrilla raids on Consortium ships and bases.