I have recently found out that accounts at various web sites have been added using my usual email address. Of course, I only know this happens when a new site sends me a message asking me to verify my email address. This is unsettling. But is it really dangerous? In some cases, I've captured those accounts and changed the passwords to prevent the originator from continuing to use them, on the theory that my email address couldn't be used at the sites anymore. But I would suppose that anyone who did this on purpose would try to recover the account by requesting a password reset.
How concerned would you be if this were happening to you on a frequent basis? I'm beginning to wonder if I need to ditch my Gmail account and set up a new one. There is lot of friction doing that, though. Maybe this doesn't actually matter, but it is happening often enough lately that it is hard to believe its just a matter of a typo in the email address used to set up those new accounts.
1Password Version: 7.6
Extension Version: 7.6
OS Version: macOS 10.15.7
Sync Type: 1Password Account