If you think installing an anti-virus software is more than enough, you are wrong. You have to take several precautions to avoid viruses. Following are some tips that will help prevent viruses from affecting your system.

- Do not download files from any website.

- Use authentic software only.

- Update your anti-virus software regularly.

- Use an anti-spyware software.

- Install a firewall.

- Do not click random links that are sent in e-mails.

- Do not open attachments that are not from a trusted source.

- Do not open attachment files that have the following extensions: .pif, .scr, .exe, and .com.

- Scan files that you download from the internet, through e-mails or otherwise.

- Update your operating system regularly.

- Back-up your data on a regular basis.

- Get a periodic check done by computer experts.

If you computer gets affected by viruses, ask the computer experts for virus removal.