Polygon Fixes Multiple Security Vulnerabilities via Austin and Kyoto Forks

Polygon Labs (Polygon Labs) has officially disclosed several hidden security vulnerabilities within its PoS network. The vulnerabilities, which affected the Bor and Heimdall clients, posed risks including denial-of-service (DoS), validator resource exhaustion, and defects in checkpoint processing. The project team successfully resolved these issues by deploying the Austin and Kyoto hard forks. The most critical vulnerability in the Heimdall client could have allowed specific transactions to force excessive computation on validator nodes, potentially leading