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My bank forces me to use 6 digits as a password for online services

5 pointsby jfoucherover 10 years ago
I just told labanquepostale.fr about this issue via their internal messaging system, and they justify it by saying that I also have to input a 10 character identifier, and that their &quot;virtual keyboard&quot; changes the arrangement of the digits at each logon.<p>How can this be secure? If it&#x27;s not, what would be good arguments to get them to think about changing it?

4 comments

Someone1234over 10 years ago
They often do stuff like this so it is easier to verify a customer via a phone system (e.g. &quot;enter your pin now!&quot;).<p>But, yes, it is bad practice and lazy. They could trivially have a &quot;phone pin&quot; or just verify security questions over the phone like almost every other bank on the planet.<p>As nodata quite correctly pointed out, it could be made secure by locking out your account after a very short number of tries (e.g. 5). Then requiring telephone or email verification to re-enable it. That would stop brute force, dictionary, and distributed versions of the same from effectively working no matter how small the password space is.<p>In my experience companies who enforce things like a 6 character password are not the kind of who will sit there and calculate out the attempts&#x2F;minute and &quot;time to break (TTB).&quot;<p>Plus the thing they said about their virtual keyboard shows utter ignorance and incompetence. Professional keyloggers don&#x27;t literally log your keys! They hook into the network stack or browser and literally grab completed POST HTTP&#x2F;s requests, so a virtual keyboard adds nothing at all security wise (and arguably makes it easier for someone to shoulder surf you, even if that threat is highly overblown and rarely exists).<p>So, yeah... Good luck convincing them. Whoever works there and making security decisions clearly is incompetent and it will likely take internal rather than external pressure for that to change.
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nodataover 10 years ago
It depends on how quickly they lock your account if the wrong password is entered.<p>If they lock it after three goes, how is a 6 digit password less secure than a 100 character password?
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milanstosicover 10 years ago
Well, it might be secure from their point of view but from user&#x27;s (yours) definitely too anoying. I&#x27;m sure that it&#x27;s not easy to update&#x2F;migrate to new security system but some solutions are just crying to be updated.<p>Btw, I found this tweet that describes bank&#x27;s security measures :)- <a href="https://twitter.com/webchaeschtli/status/462584313209696258" rel="nofollow">https:&#x2F;&#x2F;twitter.com&#x2F;webchaeschtli&#x2F;status&#x2F;462584313209696258</a>
oplessover 10 years ago
IME they just ignore the public