If you have Koss on a ship he prevents anything from affecting all other upgrades on the ship (except himself).
If you have Dispersion Field on a ship it prevents anything from affecting all other upgrades on the ship (except itself).
This means that if both are on the same ship all of the upgrades on the ship become invulnerable to ever being affected by an opponent as Koss is protected by Dispersion Field and vice versa.
Was this interaction intended?