---
title: "Polygon Quietly Patched Security Flaws in Two Hard Forks Before Disclosing Them"
url: https://thecoingazette.com/polygon-quietly-patched-security-flaws-in-two-hard-forks-before-disclosing-them/
date: 2026-08-30
modified: 2026-08-30
lang: en
author: "Coin Gazette Editorial"
description: "The Austin and Kyoto hard forks, deployed quietly on the Bor and Heimdall clients before public disclosure, closed denial-of-service and consensus-hardening flaws that Polygon says were never exploited."
categories:
  - "Coins"
word_count: 28
---

# Polygon Quietly Patched Security Flaws in Two Hard Forks Before Disclosing Them

The Austin and Kyoto hard forks, deployed quietly on the Bor and Heimdall clients before public disclosure, closed denial-of-service and consensus-hardening flaws that Polygon says were never exploited.