According to leaked developer notes from modding communities:

The problem is that Black Ops Cold War is no longer the primary focus for most trainer developers. With Modern Warfare III and Black Ops 6 being the current revenue drivers, updates for Cold War trainers have slowed to a crawl. because the developer cannot justify rebuilding the trainer from scratch for a game that is 3+ years old every time Treyarch pushes a minor security patch.

The ethical, technical, and social implications of game trainers in modern gaming are best exemplified by the ongoing battle between developers like Treyarch and third-party software creators such as FLiNG. Since its release in November 2020, Call of Duty: Black Ops Cold War has served as a primary battleground for this conflict. Trainers—programs designed to modify game memory to grant players advantages like infinite health, ammo, or currency—represent a subculture of gaming that values personal empowerment over prescribed difficulty. However, the persistent patching of FLiNG’s trainers by Activision underscores a fundamental shift in how digital ownership and fair play are managed in the era of "Games as a Service."

: Always back up your game save files before using any third-party software. Additionally, be aware of the community's stance on using cheats and trainers in multiplayer games, as it can affect the gaming experience for others.