Developers often struggle with cheaters on PC. As soon as Call Of Duty: Black Ops 4 is released, hackers have likely already created the first aim bots. Developer Treyarch is monitoring the problem.
On October 12th, around a week ago, Black Ops 4 was released. During this time, players have reached the maximum level and unlocked rare skins.
However, after just a few days, hackers have apparently managed to circulate aim bots for Black Ops 4. Fans have discovered and shared recordings of an alleged user. Treyarch has already responded and is working on a solution.

Are there already Aimbots in Black Ops 4?
What are Aimbots? They are external tools that are supposed to help players aim at opponents and hit them every time.
What is the suspicion based on? On reddit, a player posted a video showing someone likely using an aimbot. It is certainly possible that players simply have very good aiming skills.
However, when watching the video, one can see how strange the movements are. The player achieves six kills in the video with almost 100% accuracy, four of which are headshot kills.
This is how the developer responds: Treyarch has seen the video and commented that they are already working with Blizzard on measures.
We take anti-cheat very seriously and have worked closely with Blizzard’s security team on this. Unfortunately, people always try to cheat, so it’s an ongoing process for us to address the issues we see.
To find out how Blizzard and Treyarch plan to “deal with” such cheaters, check out our interview special from EGX 2018 in Berlin.

Are there any further issues? Like most major games after release, Black Ops 4 is also facing a few problems.
Just on October 18th, we reported on a possible bug that may have existed for a while. Players complained about hits that were not recognized by the game. Also, player gestures are causing issues.