Countermeasure (computer)

A countermeasure is something that helps to protect computers and their data from being attacked or damaged. Think of it like a guard protecting a building from intruders, or a fence that keeps unwanted people out. Countermeasures can be things like strong passwords, antivirus software, firewalls, encryption, or even regular software updates. They all help to make sure that no one can get into your computer or damage it without your permission.