SIM Swap Detection
Detect SIM swap fraud in real time. Protect accounts from takeover with network-level SIM change monitoring.
Overview
SIM swap fraud is one of the fastest-growing attack vectors in digital security. Criminals convince mobile operators to transfer a victim's phone number to a new SIM card, then intercept SMS verification codes to take over bank accounts, email, and other services.
The SIM Swap Detection API gives you real-time access to operator data about SIM card changes. You can check whether a SIM swap has occurred within a specific timeframe or retrieve the exact date of the last SIM change — allowing you to flag suspicious activity before fraud happens.
How It Works
Request SIM swap check
Your application sends a check request with the phone number and a time window (e.g., last 24 hours).
Operator verifies SIM history
The mobile operator checks its SIM management records to determine if a SIM swap occurred in the specified period.
Receive risk assessment
You receive a boolean result (swapped/not swapped) or the exact timestamp of the last SIM change for risk scoring.
API Endpoints
/sim-swap/v1/checkCheck whether a SIM swap occurred within a specified timeframe.
// Request
{
"phoneNumber": "+34629341502",
"maxAge": 24 // hours
}
// Response
{
"swapped": false
}/sim-swap/v1/retrieve-dateRetrieve the timestamp of the most recent SIM swap event.
// Request
{
"phoneNumber": "+34629341502"
}
// Response
{
"latestSimChange": "2024-01-15T10:30:00Z"
}Use Cases
Banking & Finance
Flag high-risk transactions when a recent SIM swap is detected. Prevent unauthorized access to online banking and payment apps.
Account Takeover Prevention
Block login attempts or password resets when the associated phone number has recently undergone a SIM change.
Insurance & Claims
Verify identity integrity during claims processing. Detect fraudulent claims where SIM swaps were used to intercept communications.
E-Commerce
Add SIM swap checks to checkout flows for high-value purchases, preventing fraud before it happens.
Supported Operators
SIM Swap Detection is commercially deployed across major global operators:
Part of the CAMARA r3.2 release. Learn more at CAMARA Project →
Ready to detect fraud?
Start integrating SIM Swap Detection into your security workflow today.