Hello, xmax! There are really some ways of hacking into your wallet... One of the most widely spread methods is using some keylogger software. There are several free tools available now like the one from
Spyrix. You should be aware of such things because they log all the keystrokes and passwords when installed. I've used some keyloggers for monitoring purposes, so I know how they work

Just be sure that there is no any suspicious software on your PC and install a good anti-virus