While engaged in combat in Cyberpunk 2077, you might sometimes notice being set on fire and dealt constant incendiary damage for a couple of seconds. This is due to a combat mechanic called Overheating. It is not uncommon for some implants to get overheated in a world full of high-grade tech and cybernetics.
What is Overheating?
During combat, your character gets overheated due to a netrunner (netrunner is a name given to hackers in Cyberpunk 2077) hacking into your system, causing your cybernetics and other components to overheat and deal incendiary damage to V.

If you can hack enemy players, you shouldn't be surprised that your enemies will try to hack you back. You can only get hacked by netrunners if you are in their direct line of sight. You can also get hacked if you're not in their line of sight, but instead in front of a security camera as it reveals your position.

