The Bitcoin network is experiencing a significant infrastructure anomaly, with over 200,000 fake node addresses detected, raising concerns of a potential Sybil attack. Starting April 9, 2026, the number of unreachable node addresses surged from 50,000 to over 250,000 daily, according to data highlighted by developer Jameson Lopp. This influx of 'ghost' nodes could be a covert attempt to manipulate Bitcoin's peer-to-peer network. Attackers appear to be targeting Bitcoin's "address book," which helps new nodes find peers, by flooding it with fake IP addresses. This strategy could lead to an Eclipse attack, isolating legitimate nodes and feeding them false blockchain data. Despite the anomaly, Bitcoin's consensus remains secure due to its client software's ability to distribute connections across subnets. Currently, the market seems unfazed by the potential threat, with Bitcoin trading up 0.36% at $81,000.