Research Shows a Week-Long 51% Attack on Bitcoin Network Would Cost $6 Billion

Bitcoin's Security Threats: Bitcoin is facing potential security threats, particularly from quantum computers and the risk of a 51% attack, which could allow attackers to control the blockchain and manipulate transactions.

Cost of a 51% Attack: Professor Campbell Harvey estimates that a successful 51% attack on Bitcoin could cost around $6 billion, which is less than 0.5% of Bitcoin's market capitalization, raising concerns about the feasibility of such an attack despite the high costs involved.