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Unit 42 Researchers Discover Multiple Espionage Operations Targeting Southeast Asian Government
Unit 42 attributes three espionage clusters targeting a Southeast Asian government to Stately Taurus, Alloy Taurus, and Gelsemium APTs.
Unit 42 investigated espionage attacks starting in late 2022 against multiple governmental entities in a Southeast Asian country, including critical infrastructure, public healthcare, financial administrators, and ministries. Analysis revealed three distinct clusters: CL-STA-0044 attributed to Stately Taurus (Mustang Panda), CL-STA-0045 to Alloy Taurus (GALLIUM), and CL-STA-0046 to Gelsemium. The first cluster used a ToneShell backdoor variant, ShadowPad, China Chopper web shells, Impacket, and credential dumping tools across roughly Q1 2021 to Q3 2023. All three operated with distinct tools, infrastructure, and long-term surveillance tradecraft consistent with APTs.
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Suspected Chinese Group Calypso APT Exploiting Vulnerable Microsoft Exchange Servers
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BlackOasis APT leverages new Flash zero
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CVE-2019-0797 Win 0Day exploited by FruitArmor, SandCat APT groups
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Head Mare APT is exploiting vulnerabilities in an unpatched TrueConf server to deliver PhantomCore and PhantomGraph to video conference participants
Head Mare APT exploits unpatched TrueConf server vulnerabilities to deliver PhantomCore and PhantomGraph backdoors to video conference participants.
Kaspersky discovered malicious TrueConf software installers used by the Head Mare APT group to deploy the PhantomCore and PhantomGraph backdoors. The group exploits vulnerabilities in an unpatched TrueConf server to reach targets. Video conference participants are infected via the trojanized installers.
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BlackOasis APT and new targeted attacks leveraging zero
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Risky Bulletin: Two TeamPCP members arrested in Australia
Australian Federal Police arrested two alleged TeamPCP members behind supply-chain worm attacks that stole over 500,000 credentials from compromised open-source libraries.
The AFP arrested alleged TeamPCP leader Ruben Thomson, 21, and Louis Gaebler, 23, near Perth; both were charged and remain in custody. The group inserted a self-spreading credential-stealing worm into open-source projects including Trivy, KICS, LiteLLM, and Telnyx, harvesting more than 500,000 credentials used for network access, ransomware, extortion, and sales. About 78,000 tokens and secrets from nearly 2,200 organizations leaked online last month, and the FBI supported the investigation that began in April.
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APT group HoneyMyte upgrades CoolClient: the backdoor gets a kernel-level Windows rootkit
Kaspersky reports APT group HoneyMyte upgraded its CoolClient backdoor with a kernel-mode Windows rootkit hiding processes, files, and network connections.
Kaspersky researchers discovered a new variant of the HoneyMyte CoolClient backdoor equipped with a kernel-mode Windows rootkit driver. The rootkit hides malicious processes, files, and network connections from security tools and threat analysts, significantly increasing the backdoor's stealth. The report documents an upgrade to the APT group's backdoor tooling with a kernel-level implant.
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Vulnerability landscape in Q4 2025
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⚡ Weekly Recap: Zero-Day Exploits, Insider Threats, APT Targeting, Botnets and More
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