Stop Fraud Before It Starts — Detect SIM Swaps in Real Time

Keypaz checks the SIM operator and serial behind every session against the history recorded for that number, so a swap surfaces the moment it happens. Step up authentication or block the session before a single verification code reaches the attacker.

SIM Swap Fraud: One Number Change, Full Account Access

An attacker moves a victim's phone number onto their own SIM through the telecom provider, and every SMS-based check you rely on quietly starts working for them.

Drained Bank Accounts

With the number in hand, an attacker resets the banking password, approves the SMS OTP themselves, and moves the balance out before the victim notices.

Emptied Wallets and Crypto Holdings

E-wallet top-ups, transfers and crypto withdrawals are all confirmed by SMS, so a swapped SIM turns into direct access to stored value.

SMS-Based MFA Bypassed

Every one-time code you send to that number reaches the attacker instead, so the second factor protecting the account is quietly working for them.

Hijacked Account Recovery

Phone-based recovery on email, marketplace and social accounts hands over the rest of the victim's digital identity from the same swapped number.

A Victim You Cannot Reach

The real SIM stops working the moment the swap completes, so the user loses service, misses your alerts, and often reports the fraud long after the money has moved.

Disputes, Refunds and Support Load

Losses from a swap arrive as chargebacks, refund claims and regulatory complaints, with your team carrying the investigation and the cost.

WHY KEYPAZ

How Keypaz Detects It

Keypaz cross-checks the current SIM operator and serial number against the recorded history for that number in real time. Any mismatch — a sudden provider change or a new SIM serial — is flagged instantly and can trigger step-up authentication or an automatic block.

Device & SIM Security

SIM swap detection

No SIM swap detected

Operator

Telkomsel

SIM serial

8962 10•• •••• 4821

Operator identification

Keypaz reads the mobile operator behind every session, whether that is Telkomsel, Indosat, XL or another provider, and compares it with the operator recorded for that number. A number that suddenly arrives on a different network is one of the clearest early signs of a swap.
SIM serial number tracking

Each session also carries its SIM serial number. When a serial Keypaz has never seen appears on a known number, the session is flagged in real time, so you can send it to step-up authentication or block it before any verification code is delivered.