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Levels of image spam dropped again in June, but researchers also saw increased use of PDF spam. The U.S. Department of Defense has banned USB drives and other removable media after a worm hit military networks. A worm, exploiting the emergency Microsoft patch, turns infected computers into bots that can launch DDoS attacks. Administrators got their second dose of patches Tuesday when Oracle issued 36 fixes. Daily Mail, which has spent months lambasting the UK government on data security, has itself lost a laptop containing the personal information of staff. Social networking sites are a security minefield, so we have created some exercises to test for vulnerabilities. Members of the so-called Rock Phish gang of Russian cybercriminals have launched a new style of attack in which they seek sensitive data not only through phishing but also by installing malware. What are the potential security implications of virtualisation? The answer is: they are considerable. Researchers on Friday continued to monitor a widespred IFRAME attack that exploits visitors to legitimate websites by installing an information-stealing trojan on their machines. Encryption is pointless if not applied to an entire session. It only gives users a false sense of security. Virus writers are actively exploiting a memory corruption vulnerability in Microsoft Word that was patched on Tuesday, researchers said today. IT security consultant Jim Reavis may have recently offered a big-time scoop to readers of his blog. Citing unnamed sources, he reported that Symantec is in talks with some of its investors, an indication that the security giant may be considering a return to private status. Spammers have launched a widespread malicious spam campaign which contains a ZIP attachment to a so-called screensaver. Many businesses are failing to secure WiFi networks, Voice over Internet Protocol (VoIP) and USB storage devices, new figures show. "Follow the money" might well be the marketing slogan for cybercriminals working the internet now, according to a new report on online financial fraud and identity theft. Worm designed to promote awareness of HIV and Aids. Organisations need to weigh the convenience of wireless networking against the risks to the integrity of their IT systems. Steve Gold reports. But analyst claims problem is a 'raindrop in a thunderstorm'. A newly-discovered worm targeting OpenOffice attempts to download indecent JPEG images onto compromised Windows, Mac and Linux PCs. Hackers have launched an attack that combines spam and viruses in a new global campaign, according to the latest report from MessageLabs.