How do I convince someone that no one is secretly breaking into his Linux pc after he sees files associated with other pc's on his system?
I have a network with several different hosts: windows laptop, network connected TiVo's, smart plugs, etc. My roommate got an Ubuntu laptop last year and had never used a Linux o/s before. Now that he's been studying he thinks he's an expert and is constantly convinced that someone had been trying to hack his system. The system is constantly crashing, or locking up, or something else and he says it's because of the hackers. I think it's because he sees all the"talk" that goes on with every network and thinks that they are targeted attacks at him. So he starts blocking things and deleting files and I'm pretty sure he probably the one that keeps crashing his system by changing things he knows nothing about but are probably critical to the system.
Does anyone have any suggestions? This is crazy. I went so far as to buy another router so that all my devices are separate from his one laptop, but he still finds things that he sees as suspicious.
I know this is a crazy question, but I'll take any suggestions.
Answer to the question
> Now that he's been studying he thinks he's an expert and is constantly convinced that someone had been trying to hack his system. The system is constantly crashing, or locking up, or something else and he says it's because of the hackers.
Hey, even if you're paranoidal it doesn't mean that someone not looking for you :D
You can say him that he need to learn more about computer security if he really so much into that.
Learn some things about SELinux, logs monitoring and fail2ban, iptables config and so on. You can give him that link, there are much of the articles about that.
Maybe someone is just joking him by the way?