Zombie rankings for second half 2004: UK - 25.2%, USA - 24.6%, China - 7.8%

In the second half of 2004, Symantec tracked the number of computers that have been compromised by malicious software. 25.

In the second half of 2004, Symantec tracked the number of computers that have been compromised by malicious software. 25.2% of all compromised computers the company discovered were based in the UK, with the US following closely behind with 24.6%, and China in third with 7.8%. In July 2004 Symantec was finding an average of 30,000 new compromised PCs each day, which fell to 5,000 per day by December.