: It powers transit systems, hotel room keys, and corporate ID badges Security Auditing
MCT 2.3.1 exploits three specific vulnerabilities:
As of 2025, most high-security systems have moved away from MIFARE Classic. However, legacy systems are pervasive:
: The app uses key files (dictionaries) to try and authenticate with tags. If a key is found in the dictionary, MCT can read that specific sector.
The tag is likely not a MIFARE Classic (e.g., it might be MIFARE DESFire or Ultralight). 4. Tips for Success