I am curious to know how a computer could be uniquely identified by some one (ISP, FBI, NSA etc) other than the computers MAC address.
Law enforcement will track you by IP address. What comes next, assuming they have a warrant, is people knocking on your door to collect the evidence - your computer and all related electronics (hard drives, USB flash, etc.)
Would it be possible to access the unique processor id or Hard disk id online?
Law enforcement (in US) is known to plant malware to identify bad actors behind TOR/proxies. As far as I know it is primarily meant to get the originating IP address. Can malware get processor and HD id? On physical system, yes. This is why you should be using a VM.
What is the best way to hide OS and System information online. Any other tools other than OSFuscate?
- Virtual machines (preferably use a live CD, such as Tails, without persistence)
- Don't use Windows as the guest OS
- Don’t use same proxies/vpn all the time
- Proxy chain
- Assume all proxies/VPN services have logs
- If someone is tracking you down, do not connect from home
- Use common sense