Design principle #1? Complete security and privacy.
No need to share your identity
Mint works for you without requiring any personally identifiable information from you. Your Mint account is anonymous; set up requires only an email, password and zip code. Mint doesn’t know your name, address, social security number, account numbers, or PINs.
Bank-level data security
Mint uses the same levels of physical and encryption security that banks do to protect the data we do store. Our practices are monitored and verified by TRUSTe, VeriSign and Hackersafe, and supported by RSA Security.
You can’t move any money
Mint is a “read-only” service. You can organize and analyze your finances, but you can’t move funds between — or out of — your accounts using Mint. And neither can anyone else.