Here are the common sign's that your computer was recently hacked. Maybe not intentionally but by accidentally, but regardless these are still good alerts to safeguard your account.
If you are a victim, the first step is to change all your passwords on every account. This might take sometime, but list them one by one, until all is done.
Link
If you are a victim, the first step is to change all your passwords on every account. This might take sometime, but list them one by one, until all is done.
Link
