Verge

Verge suffers a 51% attack in April 2018

Summary # Verge blockchain fell victim to a hybrid attack, which combined a mining algorithm exploit with a 51% attack. Attackers exploited vulnerabilities in Verge’s mining algorithm and a bug in the retargeting mechanism, allowing them to mine blocks rapidly and accumulate approximately 250,000 XVG coins, worth $1.75 million. The attack began on April 4, 2018, and despite the Verge development team’s attempts to release patches, the issue persisted until April 9, 2018, when a second patch finally resolved the problem. ...