Same problem here. Is this a false-positive error? Could it be that it's being triggered by bots trying to access but they're being rejected by reCaptcha?
We have this with 2.4.2. Any ideas how to fix this?
Same issue on 2.3.4
Same on 2.4.3-p1
Same issue in Magento 2.4.4, no admin user can login at the moment