Security Signals
Blockchain security incidents, exploit analysis, vulnerability disclosures, and defense strategies for Web3 infrastructure.
Bitcoin BIP-361: Post-Quantum Migration & Coin Freeze
Bitcoin BIP-361 proposes a three-phase post-quantum migration. Phase B could freeze coins in legacy wallets. What the proposal does, its status, and the freeze risk.
Hyperbridge Cross-Chain Bridge Exploit: $12M Drained via Mint Function Vulnerability
A critical vulnerability in Hyperbridge's token minting function allowed an attacker to drain $12M across three chains, highlighting persistent risks in cross-chain bridge architecture.
Hedera Publishes Post-Quantum Migration Roadmap as NIST Finalizes PQC Standards
Hedera released a detailed post-quantum cryptography migration roadmap in April 2026, outlining a phased transition from Ed25519 and ECDSA to NIST-standardized quantum-resistant algorithms. With expert surveys placing odds of a cryptographically relevant quantum computer at over 50% by the late 2030s, the timeline for migration is tighter than many networks acknowledge.
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