In response to your question - Graal isn't malware. The application is only ran once opened and once closed it doesn't run.

Your father has a point - if your internet is running slow you could be getting DDoS attacked; however based on the traffic of a DDoS attack I doubt you'd be able to open a webpage and your internet would cut off. Moderators do have access to your IP, however after running a log on the forums I can see nobody has viewed your account details.

You're welcome to pass on my email to your father- [email protected]; for any queries.