- For hacking offensive skill, see Hacking skill (XCOM 2).
- Main article: Hacking (XCOM 2)
Hack defense is an attribute in XCOM 2.
Note that all ADVENT soldiers have 125 Hack defense regardless of the game difficulty or the enemy unit tier, and the Hack defense comes into play only when an enemy soldier is being Skullmined. Other enemy units and turrets - which can be hacked with Haywire Protocol - have their own Hack defense stat values.