Symantec is making a major push to get its security products into more mobile phones.
"The growing levels of adoption of mobile devices mean that we need to protect these with the level of capability that you see in the desktop world," said John Thompson, Symantec's chairman and chief executive officer.
The company has announced availability of its Symantec Client Security software for the Nokia 9500 Communicator and the 9300 smartphone model, which use the Symbian operating system.
In Japan, where third-generation (3G) services are already widespread, the company is now talking to carriers and handset makers to offer them as yet undisclosed Symantec products, Thompson said.
The software for the Nokia handsets provides anti-virus and firewall software that is preloaded in the phones' memory cards, and can be updated wirelessly, Symantec said.
"Small form factor devices as well as PCs need to be protected, and so will 3G phones," said Robert Clyde, Symantec's vice-president and chief technology officer.
NTT DoCoMo, Japan's biggest carrier, is investing heavily in Symbian OS. In December 2003, the operator announced that it was giving ¥37bn (£190m) to Fujitsu, Mitsubishi Electric, Motorola Japan, NEC, Panasonic Mobile Communications and Sharp to develop mobile phones with the operating system.
Paul Kallender writes for IDG News Service