That would raise awareness with users (ok, maybe scare some people) and give me some hints that my account may be under attack...
That would raise awareness with users (ok, maybe scare some people) and give me some hints that my account may be under attack...
This is probably why. The signal/noise ratio of people freaking out about 'their account being hacked' or 'bank xyzs terrible security because so many people hack my account every week' would probably completely overwhelm the security benefit. E.g: '10 failed logins? why are you letting other people try to log into MY account???' etc.
Only way I could see this working is with industry wide support and a mass awareness campaign, and even then people would be annoyingly confused. (possibly worthwhile though)
This will probably give rise to support calls to the bank...
[1] https://krebsonsecurity.com/tag/sim-swap/
In general, relying on a second factor whose security practices aren't the best, could actually compromise security compared to having a strong and unique password.
I personally wish that more banks would support 2FA authentication using a username/password in combination witH TLS client side certificates.
This would, in turn, cause a lot of panicked calls to the bank.