Experts warn of rootkit explosion

Security experts today reported an "alarming increase" in the amount of malicious code using rootkit techniques.

PandaLabs recorded a 62 per cent annual increase in rootkit activity in 2006, and describes the forecast for 2007 as pessimistic.

In the first two months of 2007 the firm has already detected almost 25 per cent of last year's total, and predicts an overall increase this year of around 40 per cent.

February's ranking of the most dangerous threats includes three malicious codes that use these techniques: Bagle.HX, Abwiz.A and Nurech.A.

"Rootkits are becoming increasingly popular among malware creators, particularly for spyware and banker Trojans," said Luis Corrons, technical director of PandaLabs.

He added that, as rootkits can evade detection by traditional antivirus and anti-spyware security systems, proactive protection is needed to block the threats based on the malicious code's behaviour and intent.