What Are the Most Common Platforms for Renting Hashrate Used in Attacks?

The most common platforms for renting hashrate are NiceHash and MiningRigRentals. These platforms act as marketplaces connecting sellers of hashrate (miners) with buyers (renters).

While they are legitimate services for general mining, their open-market nature makes them the primary vector for hashrate acquisition used in 51% attacks on smaller, vulnerable PoW coins due to the ease and speed of rental.