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Dark Reading
The China-backed threat actors have used the previously undiscovered infrastructure to obtain long-term, stealthy access to targeted organizations.
The Hacker News
A suspected China-nexus threat actor dubbed UNC4841 has been linked to the exploitation of a recently patched zero-day flaw in Barracuda Email Security Gateway (ESG) appliances since October 2022. "UNC4841 is an espionage actor behind this wide-ranging campaign in support of the People's Republic of China," Google-owned Mandiant said in a new report published today, describing the group as "
Dark Reading
Researchers have observed China's UNC4841 dropping the backdoor on Barracuda's email security appliances, in a spiraling cyber-espionage campaign.
The Hacker News
Threat hunters have discovered a set of previously unreported domains, some going back to May 2020, that are associated with China-linked threat actors Salt Typhoon and UNC4841. "The domains date back several years, with the oldest registration activity occurring in May 2020, further confirming that the 2024 Salt Typhoon attacks were not the first activity carried out by this group," Silent Push
Bleeping Computer
Network and email security firm Barracuda says it remotely patched all active Email Security Gateway (ESG) appliances on December 21 against a zero-day bug exploited by UNC4841 Chinese hackers. [...]
The Hacker News
A suspected Chinese-nexus hacking group exploited a recently disclosed zero-day flaw in Barracuda Networks Email Security Gateway (ESG) appliances to breach government, military, defense and aerospace, high-tech industry, and telecom sectors as part of a global espionage campaign. Mandiant, which is tracking the activity under the name UNC4841, described the threat actor as "highly responsive to
Bleeping Computer
A suspected pro-China hacker group tracked by Mandiant as UNC4841 has been linked to data-theft attacks on Barracuda ESG (Email Security Gateway) appliances using a now-patched zero-day vulnerability. [...]