I hope none of them had critical, security endangering info.
You mean other than name, address, telephone number, date of birth, social-security-number, spouse's name, children's names? There were a couple I had been warned about, but those involved credit card numbers. As near as I can figure out you get notified if your credit card or health information is exposed. Or in the case of a VERY ethical company/institution/individual, which I have reason to believe triggered the whole event in the first place.
Apparently the number of data breaches has risen sharply since Covid-19 came on the scene. (Too many
people hackers in isolation with nothing else to occupy their minds?) But are not making the news either because Covid-19 and Trump's serial failures are sucking up all the air time or because the breaches don't involve enough people to be "newsworthy".