I really think someone is accessing my pc illegally and I've read it on many sites that netstat can help me how to trace it.
I'm really not into networking so it's hard for me to interpret these outputs. How could I know if someone is illegally connecting to my pc through the output of netstat -sp TCP?
You can start copying the ip's (numbers in the form of x.x.x.x) into a web browser or bulk lookup like this: https://www.infobyip.com/ipbulklookup.php those ip's are tied to websites like google or microsoft. if one of them is located near you ( just like a home address) it could be a nosey neighbor.
there are typical ports ( the number after the ip x.x.x.x:#####) that are used for malicious activity those are here:
http://www.dummies.com/programming/networking/commonly-hacked-ports/
check your programs and features for unwanted installations too start>control panel>programs features look for keyloggers, cameras, file transfer or management. if your not sure what the program is, google it before uninstalling.
lastly, you can log on to your router to see if there are any unusual changes to setting. your isp can help you there.
