One hacker armed with one computer isn’t going to make a dent in most financial institutions’ network security perimeters. But imagine a faceless army of thousands of compromised PCs outside the walls of your institution. Botnets are computer robots programmed to obey the commands of their master, and will do whatever their botmaster tells them to do. The risk that a botnet poses changes depending on what the criminals are doing, says Lance Spitzner, president and founder of the HoneyNet Project.”]
Source: https://www.bankinfosecurity.com/botnets-new-faceless-threat-a-598