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There are plenty of ways to prevent authorized access. Your first line of security is your computer password - this prevents physical intrusion at a basic level. Your second line of defense are the two brothers: Antivirus and Antimalware; often times AntiVirus programs are bundled with AntiMalware, ultimately that choice is up to you if you want to use a dedicated Antimalware program. These two programs defend and seek out intrusions via complex algorithms and comparing known attacks and symptoms by constantly monitoring your PC. While lots of AntiVirus programs offer a web-defense (defends you from shady websites) it's always good to consult your browsers' settings and enable any sort of Web Protection they offer; Chrome and Mozilla both maintain an initiative which collects user submitted info on reported websites and notifies you when you try to access one. These notifications may appear long before your AntiVirus picks them up.

If you wanted to take a step further in being actively protected, there are Keystroke Scrambler programs which scramble your keystrokes when typing - this prevents any program, such as a keylogger, from recording what you are actually typing. The scrambling software employs special algorithms which keystrokes appear normal for the user, but not for malicious software.

Lastly, the most important line of defense is common sense! Remember to remain aware of the dangers of clicking suspicious links, visiting websites you are unsure about, and downloading programs.

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