China-linked group UNC5221 exploited Ivanti Connect Secure zero-day since mid-March

Ivanti addressed a critical remote code execution flaw in Connect Secure, which has been exploited since at least mid-March 2025. Ivanti released security updates to address a critical Connect Secure remote code execution vulnerability tracked as CVE-2025-22457. The vulnerability has been exploited by a China-linked threat actor since at least mid-March 2025. Ivanti did not disclose […]

April 3, 2025
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SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 38

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Decrypting Encrypted files from Akira Ransomware (Linux/ESXI variant 2024) using a bunch of GPUs  Jaguar Land Rover Breached by HELLCAT Ransomware Group Using Its Infostealer Playbook—Then a Second Hacker Strikes  ClearFake’s New Widespread Variant: Increased Web3 […]

March 23, 2025
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UAT-5918 ATP group targets critical Taiwan

Cisco Talos found UAT-5918, active since 2023, using web shells and open-source tools for persistence, info theft, and credential harvesting. Cisco Talos uncovered UAT-5918, an info-stealing threat actor active since 2023, using web shells and open-source tools for persistence and credential theft. The APT UAT-5918 targets Taiwan, exploiting N-day vulnerabilities in unpatched servers for long-term […]

March 23, 2025
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CERT-UA warns of cyber espionage against the Ukrainian defense industry using Dark Crystal RAT

CERT-UA warns of a cyber campaign using Dark Crystal RAT to target Ukraine’s defense sector, including defense industry employees and Defense Forces members. The Computer Emergency Response Team of Ukraine (CERT-UA) uncovered a new cyber espionage campaign targeting employees of defense-industrial complex enterprises and representatives of the Defense Forces of Ukraine with Dark Crystal RAT. […]

March 20, 2025
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Nation-state actors and cybercrime gangs abuse malicious .lnk files for espionage and data theft

11 state-sponsored APTs exploit malicious .lnk files for espionage and data theft, with ZDI uncovering 1,000 such files used in attacks. At least 11 state-sponsored threat groups have been abusing Windows shortcut files for espionage and data theft, according to an analysis by Trend Micro’s Zero Day Initiative (ZDI). Trend ZDI researchers discovered 1,000 malicious […]

March 18, 2025
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Denmark warns of increased state-sponsored campaigns targeting the European telcos

Denmark ‘s cybersecurity agency warns of increased state-sponsored campaigns targeting the European telecom companies Denmark raised the cyber espionage threat level for its telecom sector from medium to high due to rising threats across Europe. The Danish Social Security Agency published a new threat assessment for the cyber threat to the telecommunications sector that highlights […]

March 17, 2025
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China-linked APT UNC3886 targets EoL Juniper routers

Mandiant researchers warn that China-linked actors are deploying custom backdoors on Juniper Networks Junos OS MX routers. In mid-2024, Mandiant identified custom backdoors on Juniper Networks’ Junos OS routers, and attributed the attacks to a China-linked espionage group tracked as UNC3886. These TINYSHELL-based backdoors had various capabilities, including active and passive access and a script to […]

March 13, 2025
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China, Russia, Iran, and North Korea Intelligence Sharing

Former CISA Director Jen Easterly writes about a new international intelligence sharing co-op:

Historically, China, Russia, Iran & North Korea have cooperated to some extent on military and intelligence matters, but differences in language, culture, politics & technological sophistication have hindered deeper collaboration, including in cyber. Shifting geopolitical dynamics, however, could drive these states toward a more formalized intell-sharing partnership. Such a “Four Eyes” alliance would be motivated by common adversaries and strategic interests, including an enhanced capacity to resist economic sanctions and support proxy conflicts…

March 12, 2025
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