Kenneth: Can you inform me next time when you want to use my computer?
Linda: Who used your computer?
Mike: Wasn't me
Kenneth: The access is blocked
Kenneth: Wrong password was inserted multiple times
Mike: I'm sorry dude
Mike: But I have nothing to do with that
Kenneth: Only you two have access to the office
Linda: Why would we use your computer?
Linda: We have ours. 
Kenneth suspects that somebody has used his computer because a wrong password was inserted multiple times and the access is blocked.