Webroot Software, Inc., a leading provider of security software for the consumer, enterprise and SME markets, has announced the most common forms of malicious security threats in the UK, at InfoSecurity Europe 2007, Grand Hall, Olympia, London. During the month of March, Trojan Downloader Zlob was the most commonly found Trojan worldwide. Some variants of the Trojan are capable of providing a hacker with the ability to remotely control and use the infected computer for malicious purposes.