In a major development, Polygon Labs came forward this week with details of several security flaws in its proof-of-stake network that had been kept under wraps while engineers worked on solutions. The company’s Validators Support Team issued the disclosure on Thursday, confirming that patches for these issues were already live on mainnet by the time the public learned about them.The bugs touched both halves of Polygon’s client infrastructure. Bor, responsible for executing transactions, and Heimdall, which oversees consensus and checkpoint duties, each had their own set of problems. Among the issues named were ways attackers could have triggered denial-of-service conditions, drained validator computing resources, or interfered with how checkpoints and milestones get processed.The riskiest of the bunch lived inside Heimdall. Per Polygon Labs, someone could have built a transaction specifically designed to overload validators with an unreasonable amount of computational work, a tactic that threatened to knock the network off balance. On the Bor side, the Austin fork closed off two separate denial-of-service paths, either of which might have bogged down block production or knocked individual nodes offline.As per reports, the team quietly built and tested fixes internally, then pushed them live through a pair of hard forks named Austin and Kyoto, only revealing the underlying vulnerabilities after both were already running on mainnet. Polygon Labs said nothing indicates the Austin-related flaws were actually exploited by anyone before the patch went out, calling the whole effort a preventative measure rather than damage control.Austin took effect at block 91,949,700 on mainnet, drawing a hard line for compatibility. Any Bor client still running a version older than v2.10.0 stops working past that point, and the rule applies to every type of node without exception. Anyone who hadn’t updated before reaching that block height has since been pushed out of the consensus process and now needs to install the newer client to get back on the correct chain.Hylo Protocol Review: The Solana DeFiSEC Approves In-Kind Creation and Redemption for Crypto ETPsGroww Review – My experience as a college studentWazirX Announces Maintenance to Recover Funds After $234M Hack