Activision’s RICOCHET Anti-Cheat system is designed to detect and ban cheaters. For major offenses, first-time users can face a permanent ban, resetting all stats and removing them from leaderboards.
Call of Duty Security and Enforcement Policy - Activision Support
Instead of risking your account, focus on ethical ways to improve your performance:
These allow players to see opponents through solid objects and walls, making them highly effective for "wallbanging" (shooting through surfaces).
Cheats in CODM are generally categorized into "soft" and "hard" hacks:
Modifications that allow characters to move across the map at unnaturally high speeds.