I'm a Virgin Media customer in the UK. My home internet connection stopped working recently and (long story short) in dealing with trying to fix it, it turns out my main login password for their service can be accessed by support staff. This means the password is being stored in plaintext.

I was contacted to ask about how customer services dealt with me and I stated how unbelievably insecure their (my!) data must be. This was the straw that finally broke my password insecurity camel's back - I now use KeePass to generate all my passwords.

I wonder if any big telcos actually treat customer data appropriately?