One of the most terrifying things that can happen to your business is a ransomware attack.

This is where hackers take control of your network and encrypt all your data, making it unusable. They won’t undo the damage unless you pay a big fee – a ransom fee.

The reason they can do so much damage is they secretly break into your system a long time before the attack is launched. The one upside of this is you can keep an eye out for symptoms you’ve been breached.

Here are three ways you can see if hackers are already in your system.