Two Alleged ‘TeamPCP’ Hackers Arrested in Australia

Authorities in Australia have arrested two men believed to be members of TeamPCP , a prolific cybercrime and data extortion group blamed for perpetrating the longest running spree of software supply chain attacks ever. In a statement released today, the Australian Federal Police (AFP) said two men from Western Australia, aged 21 and 23, were arrested in connection with a “sophisticated cybercrime syndicate that allegedly created malicious open-source software to rob thousands of global businesses.” The AFP did not name the defendants, but KrebsOnSecurity learned the 21-year-old suspect’s real identity in June, and has been communicating with him ever since. This story includes interviews with TeamPCP’s self-described spokesperson, and examines clues left behind by the TeamPCP leader that likely led to his undoing. TeamPCP vaulted onto the cybercrime scene in late 2025, embedding malicious code in hundreds of open source software tools and extorting victims for profit. Members of the group made headlines by compromising corporate cloud environments using a self-propagating worm dubbed Shai-Hulud , which added malicious code to open source programs maintained by developers whose credentials at public code repositories like GitHub or NPM were phished or stolen. Writing for Wired , journalist Andy Greenberg described TeamPCP’s core tactic as a kind of cyclical exploitation of software developers. “The hackers gain access to a network where an open source tool commonly used by coders is being developed,” Greenberg wrote in May . “The hackers plant malware in the tool that ends up on other software developers’ machines, including some who are writing other tools intended to be used by coders. The malware allows TeamPCP’s hackers to steal credentials that let them publish malicious versions of those software development tools, too. The cycle repeats, and TeamPCP’s collection of breached networks grows.” TeamPCP also has practiced something akin to cyclical recruitment. In