This phone uses the Symbian S60 rel. 3.2 operating system. Most big anti-virus vendors (Symantec, F-Secure, Kaspersky, etc.) would be more than happy to sell you an anti-virus product for this environment. However, buying one would be essentially a waste of money and precious device memory, since viruses for this operating system do not exist. It is much more secure than the release 2.x version (for which viruses abound) and is incompatible with it.