Sophos's CTO Richard Jacobs discusses the security concerns around virtualization, explaining the risks associated with unmanaged virtual desktops and how administrators can control the unauthorized use of virtual software on the corporate network.

Sophos's free tool enabling computer users to check if machines were a security risk has revealed some startling results. Sophos's John Shaw, director of endpoint security, discusses the state of security in the market, including that half the computers scanned were missing security patches or running out-of-date protection software.

Following the continued rise in web-based threats, Richard Baldry and Carole Theriault discuss the methods being used by cybercriminials to lure victims into visiting infected webpages, what internet users can do to safely browse the web and advise how to secure websites from hacker attacks.

The first financially motivated malware was detected for the Apple Macintosh operating system in 2007 and security experts are warning Mac users to prepare for more attacks. Graham Cluley, senior technology consultant at Sophos, puts the threat into perspective.

Graham Cluley, senior technology consultant at Sophos gives a snapshot of the findings in the latest threat report, revealing which countries are relaying the most spam, highlighting top web threats, and explaining why the malware problem is a concern that spreads beyond Microsoft.

Carole Theriault interviews Paul Baccas, spam and virus researcher at Sophos, about stock pump-and-dump spam. They discuss how the campaigns - ranging from plain text to attached MP3 files - have evolved, influencing global stock markets.

Carole Theriault interviews Matthew Holden-Milner, network access control specialist at Sophos, about why organizations need to consider an access control solution to reduce the security risks posed by non-compliant endpoints, and they discuss the solutions on offer.

Graham Cluley, Senior Technology Consultant at Sophos discusses the growing concern and implications of accidental data leakage via email, and explains what IT administrators can do to protect their businesses against data loss.

Graham Cluley, Senior Technology Consultant at Sophos addresses concerns surrounding Payment Card Industry compliance and advises merchants on how they can secure their customers' data by following the Council's standards.

Mark Harris, Global Director of SophosLabs discusses anti-virus testing, explaining why protection is not just about detection rates, and recommends which testing bodies users should look to for independent advice.