Jed 

Agreed.

Tony

On Saturday, December 8, 2018 at 9:32:27 AM UTC+11, Jed Carty wrote:
>
> Tony,
>
> Of course it is possible, but just because it is possible doesn't mean it 
> is useful. It is very easy for two factor authentication systems that are 
> improperly implemented to make the overall system less secure. The 
> definition Mario used is important, otherwise the added security is just an 
> illusion. Security questions about favourite pets and old schools are 
> mainly useful for locking people out of their own accounts.
>
> One of the easiest methods of gaining access to an account you are not 
> supposed to have access to is to compromise one form of communication, like 
> redirecting a cell phone signal or creating an email account that used an 
> old service that doesn't exist anymore, and then answering security 
> questions incorrectly enough times to trigger the recovery mechanism and 
> have the recovery password sent using the communication channel you control.
>
> It is very easy to do something that is supposed to make a system more 
> secure that actually makes it more vulnerable by increasing the size of the 
> exposed attack surface.
>

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