With so many PC threats, it's more important than ever to protect your PC.

To help you do this, Computeractive has teamed up with Agnitum to offer a lifetime subscription to Outpost security software, worth £60, to 20 readers.

The software package, which is compatible with Microsoft's new operating system, Windows 7, protects PCs against threats from surfing the web, social-networking sites and instant messages. It uses a list of predefined web addresses, which are updated daily to do this.

This filtering helps to stop phishing attacks that attempt to steal passwords, login information and other sensitive data. The list of blocked sites is updated via the automatic updates and can be edited to suit your preferences.

It also includes a two-way firewall to guard network access and has a combined anti-virus and anti-spyware scanner.

The anti-spam filter also keeps the inbox clean of junk emails. You can also program it to recognise and use your personal definition of spam, so it becomes more efficient.

The software also comes with an ID Block feature, which protects confidential data such as passwords.

It also ensures no-one else, including other members of the household, can disclose this information on the web. For your chance to win this great PC, answer the question shown below before 20 August 2009.

For more information about Outpost Security Suite Pro 2009, visit the Agnitum website: www.agnitum.com