[keeran]

Virus scan your machine, check for browser malware. Sounds like it's more likely to be a client problem than a Google problem.

[beambot]

I can confirm that this appears to be a Google issue and not a browser (or virus) issue. Searching for these terms, Google serves up the counterfeit ads on the search results sidebar. I tested this on both my Mac (Safari) and Linux (FF) machines.

[alanh]

This is a good idea… for me, you seem to be the #2 result for "Herve Leger Authenticate".