Allow users to secure their accounts with 2-Factor Authentication (2FA)
By: minimike86 | 31-07-2018 01:33
Currently you log into giffgaff via your username (member name or mobile number) and your password.
Attackers can very easily enumerate member names using giffgaff's own affiliate links. For example: When you browse to https://www.giffgaff.com/orders/affiliate/minimike86 you will see that I am offering a joining bonus. However when you browse to https://www.giffgaff.com/orders/affiliate/ijustmadethismembernameup which is an invalid member name you are redirected to https://www.giffgaff.com/orders/mgm and with a few lines of code you can find all of the possible member names on the site.
What is your idea?
"2-Factor Authentication (2FA)" is a security control whereby a physical device (something you have) in the possession of the user produces random one-time use codes that are supplied with or after the username/password (something you know) combination. Example: a mobile phone running the google authenticator application <- Most Secure
"two-step verification" is a security control whereby you would receive a text message or email with a code that you would then enter after a successful login using a username/password combination, which would then authenticate you. This security control is not currently activated. <- Somewhat Secure
How will this benefit giffgaff and it’s members? Why should giffgaff implement your idea?
Currently the ONLY thing protecting any giffgaff customer from account compromise is their password.
It should therefore be fairly obvious what the benefits of adding one or both of the above ideas are...
- Customer data will be more secure from account compromise (guessing username/password)!
- GiffGaff will boost its customer reputation!
- GiffGaff will reduce its operating costs - when informing customers about suspicious activity on their user accounts!