MANTRA Releases Post-Mortem on Security Breach Involving 720 Million Tokens

MANTRA Chain published a report on the August 20 security incident, where an attacker exploited an unsigned integer underflow vulnerability in the upstream cosmos/evm dependency. This allowed the unauthorized transfer of 720,923,967.99 MANTRA, valued at approximately $3.6 million at the time. The breach involved funds from a burn address and a genesis-era multi-sig address. The network was halted for over 30 hours until the v8.4.0 upgrade was implemented. While no funds have been recovered, approximately 37.96 million MANTRA remain frozen in the attacker's