

Having seen the internal workings of a few of these random services, not very safe at all.
It’s not just shoddy work, or a lax security policy. There is real money to be made by being unethical, and there is nothing to stop many website owners from just selling the data. It’s not like there are consequences to selling it.
I have a feeling this happens a lot
A lot of people are compelled to hurt others, it doesn’t have to be only about money.
And the ways this happens is not always physically violent. Many are compulsed to scam or betray in subtle ways.
Website owners are no different than any other group of people, and they often skew to compulsive dishonesty.
Why? Because often to get a site up and running with real traffic, dirty and dishonest tricks are used. Unless a site is truly different or outstanding , there is quite a story about how it got popular. Often involving both money and questionable ethics.