Hi

After reading an awful lot of old threads on this matter it seems I'm at a dead end (I'm sure someone will prove me wrong).

Running ecommerce on Drupal 7.41. My issue is invalid query strings all resolve 200 ok back to my home page.
e.g. mysite.com/?category=whatever-I-want will resolve 200 ok to the homepage.

I understand that is the Drupal standard (intended?!) behaviour however this could cause a massive headache should a malicious competitor recognise this and have a bunch of spammy URLs indexed.

making changes to the .htaccess file appear to break images etc.

Any help at all would be greatly appreciated (as you can probably tell I'm quite new to this).

Thanks