The software works exclusively against SIM cards utilizing the legacy authentication algorithm. This algorithm suffered from a severe structural flaw known as a "differential power and collision attack." By sending a massive sequence of targeted challenges to the card and measuring the responses, Woron Scan can mathematically deduce the secret Ki value. Legacy SIM Cards (Comp0128v1) Modern SIM Cards (Comp0128v2/v3, USIM, 5G SIM) Woron Scan Compatibility Fully Compatible Incompatible Extraction Success High (within a few hours) Zero (Card will lock up / "brick") Typical Era Late 1990s to Mid-2000s Late 2000s to Present Day
The software works exclusively against SIM cards utilizing the legacy authentication algorithm. This algorithm suffered from a severe structural flaw known as a "differential power and collision attack." By sending a massive sequence of targeted challenges to the card and measuring the responses, Woron Scan can mathematically deduce the secret Ki value. Legacy SIM Cards (Comp0128v1) Modern SIM Cards (Comp0128v2/v3, USIM, 5G SIM) Woron Scan Compatibility Fully Compatible Incompatible Extraction Success High (within a few hours) Zero (Card will lock up / "brick") Typical Era Late 1990s to Mid-2000s Late 2000s to Present Day