Latest cybersecurity reporting from selected sources.

Researchers found China’s Daxin rootkit and a new Stupig backdoor on a Taiwan firm’s network, suggesting a stealthy intrusion dating back to 2013. Symantec’s Threat Hunter Team found Daxin running on a compromised host at a Taiwan-based subsidiary of a multinational high-tech manufacturer in 2026. Daxin is a Windows kernel-mode rootkit that Symantec first documented […]

An advanced malware previously attributed to a China-linked threat actor has resurfaced after more than four years within a Taiwan manufacturing firm, along with a previously unreported backdoor dubbed Stupig

Researchers Identified Two Undocumented Variants Used Since 2023Eset uncovered two previously undocumented Windows variants of the China-linked SprySocks backdoor tied to FishMonger and iSoon, revealing expanded espionage capabilities, rootkit-based stealth and continued targeting of government organizations across Asia and Central America.

A previously undocumented Linux implant named Quasar Linux (QLNX) is targeting developers' systems with a mix of rootkit, backdoor, and credential-stealing capabilities. [...]

TrendAI™ Research breaks down Quasar Linux (QLNX), a previously undocumented sophisticated Linux RAT with low detection rates. In this blog, we examine a full-featured Linux threat incorporating a rootkit, a PAM backdoor, credential harvesting, and more, revealing how this malware enables stealthy access, persistence, and potential supply-chain attacks.

The Chinese hacking group known as Mustang Panda has leveraged a previously undocumented kernel-mode rootkit driver to deliver a new variant of backdoor dubbed TONESHELL in a cyber attack detected in mid-2025 targeting an unspecified entity in Asia

A new sample of the ToneShell backdoor, typically seen in Chinese cyberespionage campaigns, has been delivered through a kernel-mode loader in attacks against government organizations. [...]

An investigation into the compromise of an Amazon Web Services (AWS)-hosted infrastructure has led to the discovery of a new GNU/Linux rootkit dubbed LinkPro, according to findings from Synacktiv

Hacking Group UNC6148 Steals Credentials With New OVERSTEP Rootkit, Google SaysA cybercrime group used a backdoor in a fully patched SonicWall appliance to steal credentials and may have sold the stolen data to ransomware groups as part of an ongoing campaign, Google Threat Intelligence Group found. The firm attributed the campaign to a cybercrime group it tracks as UNC6148.

Someone's OVERSTEPing the mark Unknown miscreants are exploiting fully patched, end-of-life SonicWall VPNs to deploy a previously unknown backdoor and rootkit, likely for data theft and extortion, according to Google's Threat Intelligence Group.…

A threat activity cluster has been observed targeting fully-patched end-of-life SonicWall Secure Mobile Access (SMA) 100 series appliances as part of a campaign designed to drop a backdoor called OVERSTEP

CISA Publishes Anatomy of Advanced Ivanti VPN MalwareHackers using Trojans connected to a malware family deployed by Chinese nation-state hackers are actively exploiting a now-patched vulnerability in Ivanti Connect Secure appliances. The malware "contains capabilities of a rootkit, dropper, backdoor, bootkit, proxy and tunneler."

The malware can cloak a malicious payload that could be remotely controlled by an adversary

A new rootkit malware named 'Syslogk' has been spotted in the wild, and it features advanced process and file hiding techniques that make detection highly unlikely. [...]

A Chinese advanced persistent threat tracked as Deep Panda has been observed exploiting the Log4Shell vulnerability in VMware Horizon servers to deploy a backdoor and a novel rootkit on infected machines with the goal of stealing sensitive data