Topic

SIM Swap

1 post about SIM Swap. Every summary links to the original.

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Twilio
How to Detect SIM Swaps in Rust With Twilio's Lookup API
SIM swap attacks let attackers take over a phone number by convincing the carrier to link it to a new SIM, enabling them to receive all calls and SMS, including OTP codes for two-factor authentication. Twilio’s Lookup API provides real-time SIM swap data from mobile network operators, indicating if the SIM linked to a number has recently changed. This tutorial shows how to integrate SIM swap detection into Rust using the rustlio crate, with dependencies dotenvy, serde, serde_json, and tokio. The code loads environment variables from a .env file for Twilio Account SID and Auth Token, calls lookup_phone_data with DataPackage::SimSwap, and prints the last_sim_swap date (e.g., 2020-04-27T10:18:50Z), swapped_period (e.g., PT48H), and swapped_in_period boolean. The post notes legitimate SIM swaps happen for reasons like lost phones or porting numbers, so the data should always be used as part of a larger, more holistic determination rather than alone.

The best engineering reads, once a week.

Topic

1 post about SIM Swap. Every summary links to the original.

Paid picks we use ourselves. Links carry a referral code — a subscription through one earns us a commission at no extra cost to you.

Newest first

Twilio
How to Detect SIM Swaps in Rust With Twilio's Lookup API
SIM swap attacks let attackers take over a phone number by convincing the carrier to link it to a new SIM, enabling them to receive all calls and SMS, including OTP codes for two-factor authentication. Twilio’s Lookup API provides real-time SIM swap data from mobile network operators, indicating if the SIM linked to a number has recently changed. This tutorial shows how to integrate SIM swap detection into Rust using the rustlio crate, with dependencies dotenvy, serde, serde_json, and tokio. The code loads environment variables from a .env file for Twilio Account SID and Auth Token, calls lookup_phone_data with DataPackage::SimSwap, and prints the last_sim_swap date (e.g., 2020-04-27T10:18:50Z), swapped_period (e.g., PT48H), and swapped_in_period boolean. The post notes legitimate SIM swaps happen for reasons like lost phones or porting numbers, so the data should always be used as part of a larger, more holistic determination rather than alone.

The best engineering reads, once a week.