How to Cut Verification (OTP) Costs Without Sacrificing Security

The Hidden Cost of SMS and the Economics of Fraud (AIT)

Many at any startup or growing company assume verification costs amount to a few cents paid to global cloud-communication providers. But the financial reality — especially across Arab-region markets — is more complex and more painful. While a local message in the United States may cost less than a cent, that cost multiplies tens of times over the moment the message crosses international borders. This pricing gap creates a heavy, escalating monthly bill that swells with every new user.

But the direct cost is only the tip of the iceberg. The biggest financial threat today is known as Artificially Inflated Traffic (AIT), or “SMS pumping fraud.” In this criminal model, attackers exploit your SMS-sending APIs, programming bots to request thousands of verification codes toward premium-rate phone numbers they control. In traditional systems, your server is forced to send thousands of messages, you pay the provider's steep cost, and the attackers split part of the proceeds with untrustworthy network operators. This drain turns the SMS bill into an unbearable, unpredictable burden.

Why Is SMS the Weakest Security Link?

Beyond its high cost, SMS suffers from structural security flaws that make it the least secure option. The technology relies on an old signaling protocol known as SS7, designed in the 1970s without modern encryption. Attackers who exploit this protocol's vulnerabilities can intercept SMS traffic and read the verification code before it reaches your phone.

On top of that are social-engineering attacks — specifically “SIM swapping.” In this attack, fraudsters trick a carrier's customer-service staff into porting the victim's number to a new SIM the attacker controls, letting them receive all authentication messages and take over accounts with ease. In short: SMS is extremely expensive and entirely insecure — the worst of both worlds.

Reverse Verification and Inverting the Attack Economics

In response to these challenges, in AkidOTP we adopted the “Reverse Verification” model. Instead of the company's server broadcasting an expensive international SMS, the system returns direct links to your app. The end user is then the one who sends a pre-filled message from their own app (via WhatsApp or Telegram) or verifies via email. The moment the user sends that message to the system's servers, the company's server receives an instant notification (Webhook) confirming the verification.

This radical change in data flow has two important effects:

• First — eliminating send costs on the free channels: WhatsApp and Telegram are free for the user, with no per-message charge to you under WhatsApp's current service-messaging model. Email, meanwhile, is included in your plan.
• Second — destroying the attacker's economic incentive: In the reverse-verification model, fraud software (AIT) cannot force your server to send messages you pay for. For an attacker to generate thousands of requests over WhatsApp or Telegram, they must send them themselves from their own devices and accounts and bear the cost and effort — gaining nothing, since there is no server of yours that can be forced to pay. The financial incentive for the attack collapses. As for the SMS channel, it is a last resort the user chooses and pays for from their own local plan, not the company. In short: attacking you becomes costly to the attacker, with no return.

Layered Protection, Designed by the Developer

In cybersecurity, there is no “unhackable” or “100% secure” system. The sound engineering goal is to design a system that raises the cost of attack to the point of defeating attackers.

AkidOTP provides four channels through a single API: WhatsApp, Telegram, email, and SMS as a last resort. By default, the system presents these channels as alternatives the user chooses from, and any one of them succeeding is enough to complete verification. True multi-factor authentication for sensitive operations — requiring two channels to succeed together — is composed by the app's designer (or by Xontric Systems when building your platform) by running two independent verifications and combining their results; for example, requiring verification via both WhatsApp and email, so an attacker would need to control both the messaging account and the email account to breach the account. This is flexibility in the developer's hands, not an imposed constraint.

And because the system is designed on European data-protection (GDPR) principles — data minimization, consent, and automatic deletion — it represents a high security standard for the Arab market. This shows in its privacy-first principle: we neither receive nor store your customers' names; we handle only the phone number needed for verification, and it is automatically deleted within minutes on the WhatsApp and SMS channels.

Also from a data-minimization standpoint, AkidOTP collects no biometric data whatsoever; identity proof rests solely on proving the user controls their number — no accounts, no profiles, nothing more. Less data on our side means less risk for everyone. The system also supports built-in cooldown periods that curb repeated requests and prevent brute-force guessing of verification codes.

And to ensure a frictionless user experience — especially on Android, where many people have both a personal WhatsApp and a business copy on different numbers — AkidOTP offers a precise engineering feature: returning separate per-app links on Android, so the user always opens the app tied to the correct number, eliminating annoying number-mismatch errors.

From Proving the Number to a Complete Platform: What Xontric Systems Builds Around You

It's important to understand the limits of each layer: AkidOTP's role ends at proving number ownership. It proves — once, securely, and cheaply — that the user truly controls their number (just like Twilio Verify, and far cheaper). The persistent account and the recurring login experience are a layer built on top of it, not inside it.

This is where Xontric Systems — the company that designed and built AkidOTP itself — adds value. With our expertise building FinTech, RegTech, and B2B SaaS platforms, we can build you your entire app or platform around AkidOTP:

• A persistent user account and a smooth login with phone number + PIN that works across all of the user's devices.
• A device-level biometric lock (fingerprint or face) whose data stays on the user's device alone and never reaches any server.
• Local SMS numbers tailored to your audience's country (a Saudi or UAE number, for example, or several), so even SMS messages become local and lower-cost.
• Additional security layers designed around the nature of your business.

These are capabilities we build for you as a service — not features in AkidOTP's self-serve plan. In short: AkidOTP proves identity, and Xontric Systems builds around it the product your business needs.

Try It Yourself Before Any Commitment

You don't have to take any of this on faith: AkidOTP's main page lets anyone enter their phone number and verify via WhatsApp or Telegram for free, with no signup and no payment — try the real experience yourself first.

Closing Recommendations

Continuing to pay steep bills for relying exclusively on SMS to confirm identity is no longer justified technically or economically. Providing a secure, low-friction login experience does not require massive budgets.

You have two paths: you can sign up for AkidOTP, create your API, and integrate it yourself; or Xontric Systems can build you the entire platform with the verification system inside it, tailored to your market — with local numbers, channel composition to your needs, and everything a serious platform requires. Either way, you move your company from bearing the burden to a flexible, secure, and financially sustainable technology environment.