What actions can an antivirus take, if a threat is detected in your computer system?

If a threat is detected in our computer system, our antivirus can take one or more of these actions in a specific order:

1. Repair — The antivirus tries to clean the infected file and remove the threat safely. This is important when it's our personal file and we would like to retain the data.

2. Quarantine — If repairing fails, the antivirus could choose to quarantine or isolate the infected file into a safe location. The quarantined file cannot be accessed but we will have a copy of the file. When a method of removing the threat is discovered, we can retrieve the data safely.

3. Delete — If the infected file can't be repaired and we do not want to retain the data, we can delete the files from our computer.