Admittedly I was a little concerned by that, but since I already use them for credit monitoring I didn't feel like I was handing them all that much more information. Better to give them a little more info, than involve another company who may still use my info even after I pay them.

I do like they're at least pretty transparent about their business model:

https://help.creditkarma.com/hc/en-us/articles/202414090-Is-...

https://www.investopedia.com/articles/personal-finance/01081...

https://www.moneyunder30.com/credit-karma