Symantec says that there were 21 known samples of such code at the end of the reporting period, up from one -- the Cabir worm -- in June 2004. Among the new threats were the
Duts virus (also known as Dust), the first threat to Windows CE; and the Mos Trojan, which was discovered in a Symbian game.
Symantec says it expects malicious code targeting mobile devices to increase in number and severity. With many groups researching vulnerabilities in Bluetooth-enabled devices, the possibility of a worm or some other type of malicious code propagating by exploiting these vulnerabilities is on the rise, according to the company.
Attacks hidden in embedded content in audio and video images are also expected to increase. This is worrisome, the company says, because image files are "ubiquitous, almost universally trusted, and an integral part of modern day computing."
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