added tool
|Scenario Task Parent=Computer
|Scenario Task Type=Unauthorised Access
|Scenario Tools and Services=Tails OS, Qubes OS, NoScript, ScriptBlock, FlashBlock, FlashControl, Comodo, Avast
|Scenario Task Description=Like its biological predecessor, a computer virus can be caught in a lot of different circumstances. It may be impossible to prevent your computer from exposure but a series of defensive mechanisms should be able to stop the infection. They include: