Ask HN: What steps do you take to protect yourself and your family online?

This week, I found out that someone opened a bank account in my name. I was able to block the account, but I am not receiving any help from the bank. They don't even have a phone number to let me talk to someone. Everything is done via email :(

What steps can I take, to protect myself online? By now, it is safe to assume that my SSN, address, employment info are in multiple databases somewhere. Given this scenario, any advice?