Before revision: Parasitic Bitcoin mining In 2011, a group of malware programs were noticed by security software vendors, which utilized high performance graphics processing units (GPUs) for Bitcoin mining, a chain of computationally intensive tasks to generate cryptocurrency units.
After revision: In 2011, a group of malware programs were noticed by security software vendors, which utilized high performance graphics processing units (GPUs) for Bitcoin mining, a chain of computationally intensive tasks to generate cryptocurrency units.