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The Russia-linked state-sponsored threat actor known as APT28 (aka UAC-0001) has been attributed to attacks exploiting a newly disclosed security flaw in Microsoft Office as part of a campaign codenamed Operation Neusploit . Zscaler ThreatLabz said it observed the hacking group weaponizing the shortcoming on January 29, 2026, in attacks targeting users in Ukraine, Slovakia, and Romania, three days after Microsoft publicly disclosed the existence of the bug. The vulnerability in question is CVE-2026-21509 (CVSS score: 7.8), a security feature bypass in Microsoft Office that could allow an unauthorized attacker to send a specially crafted Office file and trigger it. The Microsoft Threat Intelligence Center (MSTIC), Microsoft Security Response Center (MSRC), and Office Product Group Security Team, along with Google Threat Intelligence Group (GTIG), have been credited with discovering and reporting the flaw. "Social engineering lures were crafted in both English and localized ...

Mozilla on Monday announced a new controls section in its Firefox desktop browser settings that allows users to completely turn off generative artificial intelligence (GenAI) features. "It provides a single place to block current and future generative AI features in Firefox," Ajit Varma, head of Firefox, said . "You can also review and manage individual AI features if you choose to use them. This lets you use Firefox without AI while we continue to build AI features for those who want them." Mozilla first announced its plans to integrate AI into Firefox in November 2025, stating it's fully opt-in and that it's incorporating the technology while placing users in the driver's seat. The new feature is expected to be rolled out with Firefox 148, which is scheduled to be released on February 24, 2026. At the outset, AI controls will allow users to manage the following settings individually - Translations Alt text in PDFs (adding accessibility descrip...

A China-linked threat actor known as Lotus Blossom has been attributed with medium confidence to the recently discovered compromise of the infrastructure hosting Notepad++. The attack enabled the state-sponsored hacking group to deliver a previously undocumented backdoor codenamed Chrysalis to users of the open-source editor, according to new findings from Rapid7. The development comes shortly after Notepad++ maintainer Don Ho said that a compromise at the hosting provider level allowed threat actors to hijack update traffic starting June 2025 and selectively redirect such requests from certain users to malicious servers to serve a tampered update by exploiting insufficient update verification controls that existed in older versions of the utility. The weakness was plugged in December 2025 with the release of version 8.8.9. It has since emerged that the hosting provider for the software was breached to perform targeted traffic redirections until December 2, 2025, when the atta...

A security audit of 2,857 skills on ClawHub has found 341 malicious skills across multiple campaigns, according to new findings from Koi Security, exposing users to new supply chain risks. ClawHub is a marketplace designed to make it easy for OpenClaw users to find and install third-party skills. It's an extension to the OpenClaw project, a self-hosted artificial intelligence (AI) assistant formerly known as both Clawdbot and Moltbot. The analysis, which Koi conducted with the help of an OpenClaw bot named Alex, found that 335 skills use fake pre-requisites to install an Apple macOS stealer named Atomic Stealer (AMOS). This activity set has been codenamed ClawHavoc . "You install what looks like a legitimate skill – maybe solana-wallet-tracker or youtube-summarize-pro," Koi researcher Oren Yomtov said. "The skill's documentation looks professional. But there's a 'Prerequisites' section that says you need to install something first." This...

A high-severity security flaw has been disclosed in OpenClaw (formerly referred to as Clawdbot and Moltbot) that could allow remote code execution (RCE) through a crafted malicious link. The issue, which is tracked as CVE-2026-25253 (CVSS score: 8.8), has been addressed in version 2026.1.29 released on January 30, 2026. It has been described as a token exfiltration vulnerability that leads to full gateway compromise. "The Control UI trusts gatewayUrl from the query string without validation and auto-connects on load, sending the stored gateway token in the WebSocket connect payload," OpenClaw's creator and maintainer Peter Steinberger said in an advisory. "Clicking a crafted link or visiting a malicious site can send the token to an attacker-controlled server. The attacker can then connect to the victim's local gateway, modify config (sandbox, tool policies), and invoke privileged actions, achieving 1-click RCE."

Microsoft has announced a three-phase approach to phase out New Technology LAN Manager (NTLM) as part of its efforts to shift Windows environments toward stronger, Kerberos-based options. The development comes more than two years after the tech giant revealed its plans to deprecate the legacy technology, citing its susceptibility to weaknesses that could facilitate relay attacks and allow bad actors to gain unauthorized access to network resources. NTLM was formally deprecated in June 2024 and no longer receives updates. "NTLM consists of security protocols originally designed to provide authentication, integrity, and confidentiality to users," Mariam Gewida, Technical Program Manager II at Microsoft, explained. "However, as security threats have evolved, so have our standards to meet modern security expectations. Today, NTLM is susceptible to various attacks, including replay and man-in-the-middle attacks, due to its use of weak cryptography." Despite the d...

Every week brings new discoveries, attacks, and defenses that shape the state of cybersecurity. Some threats are stopped quickly, while others go unseen until they cause real damage. Sometimes a single update, exploit, or mistake changes how we think about risk and protection. Every incident shows how defenders adapt — and how fast attackers try to stay ahead. This week’s recap brings you the key moments that matter most, in one place, so you can stay informed and ready for what’s next. ⚡ Threat of the Week Google Disrupts IPIDEA Residential Proxy Network — Google has crippled IPIDEA, a massive residential proxy network consisting of user devices that are being used as the last-mile link in cyberattack chains. According to the tech giant, not only do these networks permit bad actors to conceal their malicious traffic, but they also open up users who enroll their devices to further attacks. Residential IP addresses in the U.S., Canada, and Europe were seen as the most desirable. ...