We can confirm that there was a successful 51% attack on Ethereum Classic
This is inevitable. Ethereum Classic (ETC) isn&#x27;t the only currency such attacks have been successful on. The site <a href="https:&#x2F;&#x2F;www.crypto51.app&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.crypto51.app&#x2F;</a> puts the cost of running a 51% attack on ETC at ~$5k per hour. The incentive for running these attacks for profit becomes higher as the market cap of these coins increases, making long-term &#x27;investment&#x27; in these coins nonsensical.