So what if you lose your PIN? Looks you can request a replacement, but what information do you need to provide in order to get a replacement, particularly that isn't part of the data hack?
Don't lose your PIN.
See my thread on ID protection, and how to protect your PIN.
Protect your PIN like it's any other vital information. I'm sure there's a way to prove your ID and get a new PIN if you lose your PIN, but I'm sure it's a huge hassle.
Bottom line, don't lose your PIN!! You have other vital information to protect, use that same approach with your PIN. Put it in an encrypted container in the cloud, print it out and put it in your safe deposit box, home safe, etc.
I place my PIN in the same ultra secure location as my bank account web log-in's, credit card web-log-in's, and any other vital information I need to keep safe and secure.
You need to be responsible for your security.