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The Zerobot botnet was first detected in November 2022. However, a much more dangerous version surfaced just a month later. By December 2022, Microsoft’s Threat Intelligence Center (MSTIC) had tracked a major upgrade: , which incorporated advanced features to target both an expanded range of devices and new web servers. This upgraded botnet was actively marketed as “ZeroStresser” on social media channels as a powerful DDoS-for-hire service.

"ZeroStresser" primarily refers to a DDoS-for-hire service (booter) that was targeted and seized by the U.S. Department of Justice.

: Users simply entered an IP address and port to launch massive attacks.