Polygon Patches Multiple Security Vulnerabilities via Hard Forks

Polygon has disclosed several previously undisclosed security vulnerabilities affecting its Bor and Heimdall clients, which could have led to denial-of-service (DoS) attacks, validator resource exhaustion, and processing errors. These issues were resolved through two hard forks, Austin and Kyoto. The most critical vulnerability in Heimdall allowed attackers to force validators to perform excessive tasks, potentially disrupting network operations. The Austin hard fork addressed two DoS risks in Bor that could have slowed block processing or caused node crash