Vertcoin suffered a 51% attack on December 10-12, 2018 when an attacker gained majority hashpower using the Nicehash rental service. The attacker executed 22 deep chain reorganizations, 15 of which included double-spend transactions with the largest reorg exceeding 300 blocks. Estimated losses exceeded $100,000.

Vertcoin suffered a major attack in which hackers stole funds worth $100,000.