Bad Botnet Growth Skyrockets in 2017

According to the Spamhaus Botnet Threat Report 2017, the company’s malware division identified and issued Spamhaus Block List (SBL) listings for more than 9,500 botnet C&C servers on 1,122 different networks. In 2017, nearly every seventh SBL listing that Spamhaus issued was for a botnet controller.
Of course, not all botnets are bad bots; but Spamhaus's Botnet Controller List (BCL), which exclusively lists IP addresses of botnet servers set up and operated by cybercriminals, saw listings increase by more than 40% in one year (and more than 90% since 2014). On average, Spamhaus is issuing between 600 and 700 BCL listings per month.