Google analyzes pages for malware in some cases. https://support.google.com/websearch/answer/45449?hl=en https://support.google.com/websearch/answer/45449?hl=en

Google analyzes pages for malware in some cases. https://support.google.com/websearch/answer/45449?hl=en https://support.google.com/websearch/answer/45449?hl=en They even warn you, I've seen an interstitial popup (from google) before for one of my sites that was compromised.