"Also known as Kimwolf, Aisuru is one of the largest botnets currently in existence, powered by an estimated one to four million infected hosts worldwide, including home and consumer devices such as routers and online CCTV systems. Its operators scan the web for vulnerable devices, often with exposed ports or default credentials, and infect them to add them to a pool of devices that can be harnessed to launch a tsunami of fake traffic against a target service."
"Cloudflare dubbed Aisuru the "apex of botnets" in its 2025 Q3 DDoS threat report, noting that telecoms firms, gaming companies, hosting providers, ISPs, and financial services are among those commonly targeted. This isn't a botnet that belongs exclusively to one threat group. Instead, Aisuru is a botnet-for-hire, with capacity available for between a few hundred and a few thousand dollars."
""Anyone can potentially inflict chaos on entire nations by crippling backbone networks and saturating Internet links, disrupting millions of users and impairing access to essential services," Cloudflare said. As reported by Krebs on Security, the botnet is also able to "rent" compromised devices to residential proxy providers, which can then be used for data scraping and even large language model (LLM) training for AI projects."
Aisuru, also known as Kimwolf, is a massive botnet powered by an estimated one to four million infected hosts worldwide, including home routers and online CCTV systems. Operators scan the internet for exposed ports or default credentials to compromise devices and add them to a pool used to generate massive volumes of fake traffic. Aisuru produced a record DDoS peak of 31.4 Tbps with 200 million requests per second. Cloudflare labeled Aisuru the "apex of botnets" and identified telecoms, gaming, hosting, ISPs, and financial services as common targets. The botnet is offered for hire and can also rent devices to residential proxy providers for data scraping and LLM training.
Read at ZDNET
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