Cryptocurrency suffered $2.3 billion in disclosed losses across 86 major incidents by late September 2026, with Bitget's $351.6 million unauthorized transfer being the latest. The attacks reveal systemic vulnerabilities beyond smart contracts—including oracle manipulation, social engineering, bridge exploits, and compromised infrastructure—with operational failures accounting for 76% of stolen value despite representing only 15% of incidents.
A Twitter thread explains multisig (multi-signature) wallets, which require multiple parties to approve transactions before execution. The post uses a safe analogy to demonstrate how multisig protects against single-key compromise, clarifies that each signer has their own private key, and contrasts this with common misconceptions about shared keys.