For official information on what is considered a violation, you can review the Activision Security and Enforcement Policy.
Call of Duty Security and Enforcement Policy - Activision Support
Using these hacks, even from sources claiming to be "bezplatn" (free), can lead to irreversible consequences for your gaming setup and personal data:
: Activision's security policy explicitly prohibits unauthorized software that manipulates game data. Using an unlock tool often results in a permanent ban that extends across all Call of Duty titles on that account.
: Often considered a faster way to grind weapon levels and unique camos than standard multiplayer.