One-time passwords or OTPs delivered via SMS offer the expediency of using a mobile phone while adding up the security of out-of-band delivery. Mobile phones are one of the devices that most
people already have and actively look after. SMS gives a recognizable platform for OTP delivery without requiring companies to own, send, or put back standalone delivery devices.
SMS can also play a significant role for organizations who select to use one more type of OTP device like a token. In these instances, SMS text delivery is a safer method to verify the token that was primarily sent to the correct user, or if the token is misplaced or broken, SMS acts as a foolproof method for OTP delivery till the token is not replaced.
Besides being recognizable to the end user, OTPs through SMS features reliable out-of-band delivery. Man-in-the-middle and other malware attacks generally hold back password reset efforts by intercepting SMSs between the user and the entity trying to deliver the new password. By sending OTPs over the mobile network, a man-in-the-middle attack is not able to intercept delivery of the password. SMS can also play a significant role for organizations that select to use one more type of OTP device like a token.
So, Bulk SMS text delivery is a secure method to assess whether token was primarily sent to the right user or not. It acts as a dependable technique for the OTP delivery and one of the best verification methods amongst all.