Once your computer is connected to the Internet, it’s also connected to millions of other computers, which could allow attackers access to your computer. Information flows from the Internet to your home network by first coming into your modem, then into your router and finally into your computer. Although cable modem, digital subscriber line (DSL), and internet service providers (ISP) purport some level of security monitoring, it’s crucial to secure your router—the first securable device that receives information from the Internet. Be sure to secure it before you connect to the Internet to improve your computer’s security.
Intruders can attack your computer by exploiting software vulnerabilities (that is, flaws or weaknesses), so the less software you have installed, the fewer avenues for potential attack. Check the software installed on your computer. If you don’t know what a software program does and don’t use it, research it to determine whether it’s necessary. Remove any software you feel isn’t necessary after confirming it’s safe to remove the software.
Back up important files and data before removing unnecessary software in case you accidentally remove software essential to the operating system. If possible, locate the installation media for the software in case you need to reinstall it.