Can You Imagine Google Hosted Malicious Software
Can you believe Google ever hosted malicious software and infected many other sites. Yes it is true, see what Google Safe browsing tells about Google itself. According to Google safe browsing Google has hosted malicious software and infected many other websites though Google has acted as an intermediary in infection. You can also check the result for Google.com using the Google Safe browsing and see what result you get.
This may be because Google crawls almost every website and off course crawls the sites which host malware and stores them into a cache. Whenever you search for something on Google you can see a link to see how did it look like when Google crawled last time, that is the cache link. Perhaps this is the reason why Google safe browsing shows such a surprising result.