Hit by Panda in February, nothing new there. But checking backlinks, I see that our site has links from very dangerous places, sometimes with safe domains - such as EDU. I can't see the links anywhere in our stats, but they appear in online backlink checkers.
Am I missing something? Are we being targeted by a hacker/competitor - I would not have sought links to any of those places I can't see any of those links in my logs. How do I limit the damage they do? Should the backlink checkers be trusted? What's going on?