Tag Info

New answers tagged


The two main methods that I have considered for this are: 1. User Defined Questions Most of the default questions I see on sites seem to be the same or very similar, easily researchable through social media, etc. I would generally think that allowing users to write their own security questions would be better with some guidance. e.g., "Come up with two ...


In many cases the merchant can check the amount before shipping the item. However many payment gateways implement a checksum value that is hashed with a secret key and if the hash don't match the value the transaction is aborted. There are several flaws with this approach, I gave a presentation at blackhat asia last year that illustrate some of them. You can ...

Top 50 recent answers are included