I started using Comodo Firewall on my new machine, and was planning to install on other machines. Now I wish I took the foresight that ANYTHING could be a potential privacy/security risk, even those that are supposed to protect your data. Now that I think of it.. Backdoors to the FBI, Big brother, cannibal lawyers, bars of soap; comes to mind.
Selling security certificates to malicious groups, even knowingly, doesn't really have anything to do with their software. they would be completely different departments within the company, the certificates would be sold by salespeople and managers (and we all know how trustworthy they are
), the software would be written by developers. IMO developers working for a security software company would be the ones who most value privacy and would object to any possibility of backdoors or anything that would make the software less secure. Am I being naive?
As for the data-collection thing, that is a concern, but unfortunately there aren't that many good free, highly configurable firewalls, not last time I looked anyway. I used to use Kerio, until they changed to Sunbelt and made the software a system hog and simplified it. The IP can always be blocked by the hosts file.