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European Telecommunications Standards Institute (ETSI) suffered a data breach

Security Affairs

The European Telecommunications Standards Institute (ETSI) disclosed a data breach, threat actors had access to a database of its users. Threat actors stole a database containing the list of users of the portal of the European Telecommunications Standards Institute ( ETSI ).

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Ukrainian telecommunications operators hit by DarkCrystal RAT malware

Security Affairs

The Ukrainian CERT-UA warns of attacks against Ukrainian telecommunications operators involving the DarkCrystal RAT. The Governmental Computer Emergency Response Team of Ukraine (CERT-UA) is warning of a malware campaign targeting Ukrainian telecommunications operators with the DarkCrystal RAT. Pierluigi Paganini.

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Russia-linked Sandworm APT compromised 11 Ukrainian telecommunications providers

Security Affairs

Russia-linked APT group Sandworm has hacked eleven telecommunication service providers in Ukraine between since May 2023. The Russia-linked APT group Sandworm (UAC-0165) has compromised eleven telecommunication service providers in Ukraine between May and September 2023, reported the Ukraine’s Computer Emergency Response Team (CERT-UA).

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RansomHub gang claims the hack of the telecommunications giant Frontier Communications

Security Affairs

The RansomHub ransomware group added the American telecommunications company Frontier Comunications to the list of victims on its Tor leak site. The RansomHub ransomware group claimed to have stolen the information of over 2 million customers from the American telecommunications company Frontier Communications.

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China-linked hackers target telecommunication providers in the Middle East

Security Affairs

Researchers reported that China-linked hackers targeted telecommunication providers in the Middle East in the first quarter of 2023. In the first quarter of 2023, SentinelLabs researchers spotted the initial phases of attacks against telecommunication providers in the Middle East. ” reads the report published by SentinelLabs.

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China-linked APT41 group targets telecommunications companies with new backdoor

Security Affairs

China-linked APT41 group is targeting telecommunications companies with a new piece of malware used to spy on text messages of highly targeted individuals. The experts found the MessageTap backdoor installed on a Linux-based Short Message Service Center (SMSC) server belonging to an unnamed telecommunications company.

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China-linked LightBasin group accessed calling records from telcos worldwide

Security Affairs

A China-linked hacking group, tracked as LightBasin (aka UNC1945 ), hacked mobile telephone networks around the globe and used specialized tools to access calling records and text messages from telecommunications companies. CrowdStrike researchers reported that at least 13 telecommunication companies were compromised by since 2019.