u/HackActivist

I recently got a notification of a successful login to an external bank account that I have linked to schwab while I was sleeping. For this bank account, Schwab is the only site I have provided the login credentials to. I thought it was fraud attempt so I changed the login credentials but I don't believe that was the case. No changes were made to the account and the banks IT team said that occasionally services such as plaid/yodlee/etc will login to the account. I also noticed a dividend payment from schwab on the same day of the login. Has anyone experienced this before?