Chinese cyberspies maintained long-term access to critical networks – sometimes for years – and used this access to infect computers with malware and steal data, according to Thursday warnings from government agencies and private security firms.

PRC-backed goons infected at least eight government services and IT organizations with Brickstorm backdoors, according to a joint security alert from the US Cybersecurity and Infrastructure Security Agency, the US National Security Agency, and the Canadian Cyber Security Centre.

However, "it's a logical conclusion to assume that there are additional victims out there until we have not yet had the opportunity to communicate with," CISA's Nick Andersen, executive assistant director for cybersecurity, told reporters on Thursday, describing Brickstor

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