The scalability trilemma is a concept in blockchain design that states a network cannot simultaneously achieve optimal scalability, security, and decentralization. Typically, improving one aspect requires compromises in the others. For example, increasing transaction throughput may reduce decentralization or require trade-offs in security. This concept guides developers when designing consensus mechanisms and network architectures. It is often discussed in the context of layer-one blockchains and protocol upgrades. The scalability trilemma highlights the inherent challenges in building efficient, secure, and decentralized networks.
Coinbase has formed an independent advisory board of cryptography and quantum experts to evaluate long-term risks that quantum computing could pose to Bitcoin and blockchain security.
Hundreds of crypto wallets across EVM-compatible chains have been drained in an ongoing attack, with investigators yet to identify the root cause or point of compromise.