A hard-to-detect piece of malware that doesn’t create any files on the affected systems was dropped onto the computers of visitors to popular news sites in Russia in a drive-by download attack. The attack code loaded an exploit for a known Java vulnerability (CVE-2011-3544) The malware is rare because it dies when the system is rebooted and the memory is cleared. The best protection against this type of attack is to keep the installed software on computers up to date, especially browsers and plug-ins.”]