Fraud prevention
Silent authentication and flash call, explained
How silent network authentication (CAMARA Number Verification) and flash-call verification work, their coverage limits, and where pre-checks still help.
6 min read
Articles tagged “Phone verification”
4 articles.
Guides
Phone validation vs phone verification: what's the difference?
Phone validation checks the number; verification proves the user holds it. What each one stops, what they cost, and how to combine them in one flow.
7 min read
Fraud prevention
Account takeover via phone-number change: a checklist for the change-number flow
Attackers change an account's phone number before resetting everything else. A checklist to secure the change-number flow without locking out real users.
7 min read
Fraud prevention
OTP fraud prevention: the checks to run before you send a code
Before sending an OTP, look up the number: number type, line type and carrier, HLR status, porting. Which APIs offer it, what to compare, a pre-send flow.
10 min read
