My apartment wanted to use some 3rd party service to do ACH transfers for my rent. I just wanted to type in my bank's routing number and account number but this

My apartment wanted to use some 3rd party service to do ACH transfers for my rent. I just wanted to type in my bank's routing number and account number but this 3rd party service only worked if you gave it your bank username/password. I was like NOPE! And sent them a paper check. My guess is they had some permission from the bank to also suck down all your transaction history. I'm too lazy to look up the service but it's a famous/popular service along the order or plaid or something