I joined a Comp match. Everyone had joined in warm up and one guy left, which was quite odd. A second later, my mouse starts going everywhere and the menu opens. I thought it was an issue with my PC until the mouse slowly dragged to the EXIT GAME bit on the menu. I turned off my PC by the plug and got scared so I waited 10 minutes and was worried if my computer had a RAT. Got on and I checked everything to make sure I didn't have a virus. Valve, please get better protection. This PC cost quite a lot and I'm sure you wouldn't want that to happen to your customers. Please fix.