Today's CryptoBloggers Digest digs into the security side of crypto this week: a suspected Binance hack, a supply chain attack that drained Polymarket users, and a reported hardware implant in Safe 5 devices. Most of the picks are about how things broke, not what price did. One is a bitcoin on-chain analysis that shows how a 544,000 BTC move turned out to be housekeeping. The digest closes with an AI-agent security audit of Bitcoin Core, which is self-reported and worth reading with that in mind.
The best crypto reads
1. How Wallet Permissions Linked Two Accounts in the Suspected Binance Hack
The Defiant · by The Defiant Team
The most useful piece on the suspected Binance hack because it stays with the records. It explains that delegated code on Binance 14 could move its own assets and exercise ownership of another wallet. It is candid that the records do not establish how that permission was obtained, which is the part most coverage skips.
2. Polymarket Hit by Supply Chain Attack: Malicious Third-Party Script Found Draining Portfolios and Wallets (At Least $800k+ Stolen. FULL ANALYSIS)
r/CryptoCurrency · by u/Malwarebeasts
A clear breakdown of the Polymarket supply chain attack: a compromised third-party performance-monitoring script, DebugBear RUM, was the entry point. The post goes through what happened, how it worked and what users should do, and reports at least $800k stolen. Hudson Rock's alert is the source it builds on.
3. About 544,000 BTC moved on Nov 22, 2025 in 200 identical sweeps. It was Coinbase’s internal wallet migration, not new buyers
r/Bitcoin · by u/JuxtaposeLife
Someone checked the chain before the headlines. The post traces roughly 544,000 BTC moved in 200 near-identical sweeps on November 22, 2025, each from a legacy address into a new bc1q address with no change output. Coinbase called it a planned internal wallet migration, and the on-chain pattern supports that reading rather than new buyers.
4. Lost 70k USD (0.85BTC) due to Electrum RBF security breach. I'm devastated and don't know how to move forward
r/Bitcoin · by u/Rortherina
A first-person account of losing 0.85 BTC, about $70k, from a hot Electrum wallet through an RBF-related breach. The writer is a long-time holder who says the keys were theirs, which makes the lesson about the wallet setup itself rather than careless habits. It is a plain, sober account of how a careful user still got hit.
A crypto AI agent at work
Bitcoin Core security has been deep reviewed by the top frontier AI models, and only two minor items surfaced.
r/Bitcoin · by u/CapoDoFrango
A security-focused AI vendor ran 16 agents across 5 frontier models for a week auditing Bitcoin Core v32.0rc1 and surfaced two minor issues, both now disclosed.
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