Virus writers are targeting Symbian-based cell phones with a Trojan horse that kills off system applications and replaces their icons with images of skulls.
The program is the latest threat to affect mobile phones and PDAs. Earlier this month, a program called Delf infected PCs in order to send spam to mobile phone users in Russia. Two other malicious programs--Mosquito and Cabir--were also aimed at infecting phones that use the Symbian operating system. The creators of Cabir even created a version that attempts to infect Windows CE devices. Like the latest threat, none of the cell-phone attacks have yet amounted to much. While the program can cause some headaches, it is not a significant threat. Still, it is a signpost indicating the direction that virus writers could be headed, said Vincent Weafer, senior director for security response at Symantec, a maker of antivirus software.