Surfing the web may harm your computer

Last Saturday I was googling for some developer related information when all of a sudden Google started reporting all search results as malware infested web sites:

This morning I heard that apparently some overworked admin at Google had by mistake put a single line holding a dash "/" into a file containing URLs of reported malware sites, thus turning on malware warnings for all search results. This problem lasted for more than an hour.

Centralized systems are more vulnerable to silly mistakes!