[header] How to stop people from spying on your computer [title] Download antivirus software. [step] This will help protect you and your computer (or other device) from malware. [substeps] If you have an android device, it's recommended you download avg antivirus security or avg tab antivirus security (if you're using tab). 
There are other good brands of antivirus software, too. [title] Don't share your personal information with strangers on the internet.