As it turned out, ConAgra wasn't able to provide the answer. I couldn't find anyone at either company who was aware of who actually runs the site, which might explain the problem and the lack of attention to security. Regardless of exactly why this happened to Armour, the fact that it happened is an important instruction to companies everywhere. Yes, it's great customer relations to have a Web site, and it's a useful vehicle for providing information to customers and partners. But that doesn't mean that you can ignore security.
Many organizations forget to check the obvious.
Witness the number of government Web sites that end up with porn on their pages. Armour is by no means alone. Web servers and Web pages break all the time. Simply hoping that everything will be OK is irresponsible. Protect your company's information assets by making sure that even if things go terribly wrong, your information is guarded.