U.S. Dismantles World’s Largest 911 S5 Botnet, with 19 Million Infected Devices

The U.S. Department of Justice (DoJ) on Wednesday said it dismantled what it described as « likely the world’s largest botnet ever, » which consisted of an army of 19 million infected devices that was leased to other threat actors to commit a wide array of offenses.
The botnet, which has a global footprint spanning more than 190 countries, functioned as a residential proxy service known as 911 S5.