Litecoin’s 13-block reorg wasn’t a zero-day, GitHub commit history shows otherwise

A 13-block chain reorganization on LTC$56.25 late Friday and Saturday rewound roughly 32 minutes of network activity after attackers used a vulnerability in its Mimblewimble Extension Block (MWEB) protocol. The bug had enabled a denial-of-service attack against major mining pools, allowing the invalid MWEB transactions to slip through nodes that had not updated, before the…

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Brazil Bans 27 Prediction Platforms, Including Kalshi and Polymarket

Brazilian authorities have moved to shut down 27 prediction market platforms, including Kalshi and Polymarket. The decision, announced Friday, follows a directive from the Ministry of Finance and enforcement by the National Telecommunications Agency (Anatel), according to state-owned news outlet Agência Brasil. Authorities claimed that such services fall outside Brazil’s current legal framework and therefore…

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