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Summarize this article with:
Polygon has finally explained what its Austin and Kyoto hard forks were hiding. The two updates fixed several security vulnerabilities kept private during their deployment. Some could slow down the network, crash nodes, or force validators to perform very costly computational work. Polygon claims no exploitation was observed on the mainnet.


In Brief
- Austin fixed two denial-of-service risks in Bor.
- Kyoto strengthened Heimdall…






