My bank used to complain that my browser was out of date. I wrote an email to customer service explaining to them that:
A) debian's "out of date" browser actually includes all up to date security patches.
B) simply reading the browser agent isnt really security. I had simply been spoofing my browser agent to get around their silly browser "security" policy
They removed the browser check 2 weeks later. Not sure if it was because of me