It is important to guard your computer against threats such as viruses and spyware. Viruses can cause considerable damage. You may lose data and need to reinstall your operating system and other programs. You can easily protect your computer from viruses and spyware by installing antivirus and anti-spyware programs which will assist you in detecting and removing viruses and spyware and prevent new infections.
It is also a good idea to install a firewall, to filter out unwanted content before it reaches your computer. This also protects against hackers by restricting access by other online users.
New threats crop up all the time, so software companies regularly produce updates to make your computer less vulnerable to security threats. Make sure that you update your antivirus software regularly to allow it to detect and remove the newest viruses.
Many operating systems include basic firewall and antivirus software, but standalone programs can often do a better job.
Next: Encrypting Data