Okay kiddo, do you know what surveillance means? It's when someone is watching you or keeping an eye on what you're doing. Sometimes, people might try to do surveillance on you without you knowing it.
Counter-surveillance is when you try to protect yourself against someone who might be trying to spy on you. You do this by being sneaky and making it hard for them to watch or listen to what you're doing.
For example, if you think someone is trying to spy on your conversations, you might talk in a quiet place or use codes or signals to communicate instead of speaking directly.
Another way you can do counter-surveillance is by checking for hidden cameras or bugs in your room or on your computer. This is like playing a game of hide-and-seek, where you need to find the spy gear before it finds you!
Overall, counter-surveillance is all about being aware and taking steps to protect yourself from people who might be watching you without your permission.