In the year since the shutdown of notorious Web hosting firm McColo, spammers are growing strong. Part of this is the result of improvements by botnet operators. Like anyone who is successful what they do, the people controlling the most powerful botnets in cyber-space learn from their mistakes. Security researchers discussed how. Researchers have spotted notable code overlap between the Sunburst backdoor and a known Turla weapon. Researchers at Recorded Future report a rise in cracked Cobalt Strike and other open-source adversarial tools.
Source: https://threatpost.com/where-are-we-year-after-mccolo-shutdown-110609/73048/