Novauth Blog
Blog
Guides, product updates, and lessons on building reliable verification infrastructure.
What Your Verification Records Should Tell You (And Why Most Providers Don't Show Them)
A monthly invoice is not observability. Here's what a call detail record actually contains, what your provider can hide by aggregating it away, and the three ratios that expose a problem before it reaches your bill.
Why One OTP Channel Never Wins Everywhere
Flash call is 50× cheaper than SMS in Nigeria. WhatsApp costs 6× more than SMS in Bosnia. The cheapest verification channel isn't a global answer — it inverts by country, and our own published rates prove it.
The OTP Delivery Chain: What Happens Between Your API Call and Your User's Phone
Your code sends one request. Between that call and the handset sits a chain of aggregators, resellers and carriers you never see. Here's what each hop costs you — in latency, in money, and in truth.
Microsoft Just Retired SMS Authentication. Here's What the Data Says Is Next
Microsoft is killing SMS/voice MFA in Entra ID by February 2027. We looked at the passkey adoption numbers, SIM-swap fraud data, and phishing stats behind that call — and what it actually means for phone verification.
AIT Fraud Explained: How Attackers Drain Your OTP Budget
Artificially Inflated Traffic fraud costs the SMS verification industry an estimated $1.6B a year. Here's exactly how the scheme works — and how to shut it down.
Flash Call vs SMS OTP: Which Should You Use?
SMS OTP and flash call (Verify Call) both confirm a phone number — but they differ on speed, cost, coverage, and fraud exposure. Here's how to choose.