CWHK:What percentage of viruses affect Windows OS?

MH:99.99 percent. There are about 30 Linux viruses, 50 Mac viruses for pre-OS X, zero Mac OS X viruses, 83 Symbian viruses, and two Windows mobile viruses.

CWHK:Why more Symbian viruses compared to Windows mobile?

MH:Because Symbian is the market leader. Same reason why everyone's targeting Windows and not Linux or Mac.

[Another] reason we have more Symbian viruses: it's easier to create new viruses by modifying the existing ones, so it feeds on itself. But it's early days for a new problem, it's been only 15 months since we discovered the first mobile phone virus.