Kaspersky Anti-Virus 2015 is the latest edition of Kaspersky's solid and reliable antivirus engine.

The package provides strong real-time protection against malicious files, email attachments, web scripts, instant messaging content, and more. Icons in your search engine results warn of dangerous sites, a vulnerability scanner highlights security holes, and there's capable anti-phishing protection thrown in.

This build adds a whole layer of extra protection from Cryptolocker-type malware. Kaspersky's System Watcher now looks out for suspect programs trying to modify user files, and immediately backs up the originals. If the suite finds the changes were malicious then not only will the malware be removed, but you'll get your original documents back, too.

There are limitations with this scheme. In particular, backups are deleted when Kaspersky Anti-Virus 2015 is closed, so if the threat isn't detected in the current session then you may lose some files. Still, it's a welcome step forward.

Elsewhere, there are the usual general improvements across the board: Kaspersky says Anti-Virus 2015 is faster, more lightweight and responsive than before.

All this is presented in a simplified, subdued interface. Plain buttons highlight four main task areas: "Scan", "Update", "Reports" and "Virtual Keyboard". Click any of these and a new pane fades into place, for the most part also keeping options to the minimum. It's all very straightforward.

There's a good set of new features here, then, but Kaspersky Internet Security's real strength lies in its very solid protection. As we write, AV-Comparatives May 2014 Real-World Protection Test found Kaspersky blocked 99.9% of attacks (and even the 0.1% didn't result in a compromised system): check out the latest scores here.

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Kaspersky Anti-Virus 2015 is an accurate and reliable antivirus tool, and the new automatic document backups mean it's now more capable than ever.