The latest email security benchmarking reports show strong Microsoft Defender performance across pre-delivery and post-delivery scenarios and reveal where threats and defenses continue to evolve. The post Improving email security outcomes with real-world Microsoft Defender insights appeared first on Microsoft Security Blog.
Hunt.io links SpiceRAT, NodeEdgeRAT and NomadRAT to a four-year SilkParasite campaign targeting governments and critical sectors in Central Asia. Hunt.io and researcher Guy Yasur have traced a tight cluster of SpiceRAT command‑and‑control servers that predate and extend Bitdefender’s August 2026 SilkParasite report. The work doesn’t dissect malware samples; it maps the network side of the […]
Microsoft reminded customers this week that devices running Windows 11 24H2 Home and Pro editions will stop receiving updates next month. [...]
Microsoft shared a temporary fix on Wednesday for a known issue that prevents Windows 11 users from logging in with valid domain credentials after installing the September 2026 security updates. [...]
UK, US, and Dutch agencies expose Chosen Brick, Iranian malware used to track and harass dissidents, journalists, and activists via Telegram. The UK, the US, and the Netherlands published a joint advisory warning about a Windows malware family, dubbed Chosen Brick, that Iran’s intelligence services use to track down dissidents, journalists, and activists, and the […]
Group-IB Threat Intelligence analyzes HEAVYGRAM, a Telegram-based Windows backdoor attributed with moderate confidence to the Iran-linked threat actor Handala Hack. Active since Fall 2023, it has been used to surveil Iranian dissidents, journalists and government opponents, enabling remote command execution, data exfiltration, and persistence over Telegram command-and-control.
Microsoft is investigating reports that the Windows 11 KB5124008 security update is breaking domain trust relationships on some enterprise systems, preventing users from logging in with valid domain credentials. [...]
Government agencies are warning that Iranian state-linked hackers are using a Windows malware strain named CHOSEN BRICK to target dissidents, activists, and journalists worldwide. [...]
Lumen exposes BambooToken, a stealthy malware family using MQTT and sideloading to quietly infect targets across Asia and beyond. BambooToken is a new malware family that uses MQTT, a lightweight messaging protocol commonly found in smart devices and industrial systems, to quietly control infected Windows and Linux machines. Most malware connects directly to a command-and-control […]
Security researchers at Forever Security have shown that one ordinary browser extension could take control of the AI assistants built into five Chromium-based products: Gemini Live in Chrome, Perplexity Comet, Microsoft Edge, Opera Neon and the Claude in Chrome extension. Once the extension was installed, it could access each product's built-in AI with a single click. On Comet, Edge,
Microsoft says it's still investigating a known issue that causes the Copilot and Copilot Chat buttons in Classic Outlook to disappear for some Windows users. [...]
Microsoft has reminded customers that Windows Server 2022 will reach the end of mainstream support next month and enter extended support until October 2031. [...]
This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 5.3.
This vulnerability allows remote attackers to initiate arbitrary server-side requests on affected installations of Airbyte. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.7. The following CVEs are assigned: CVE-2026-92203.
Microsoft agreed to adopt guardrails and privacy standards for its AI in schools, as negotiated with the American Federation of Teachers. The post Microsoft Commits to Sweeping AI Privacy Rules for Students. Will Other Tech Giants Follow? appeared first on SecurityWeek.
You can't make an omelet without breaking a few eggs, and you can't patch nearly 1,000 CVEs without a few glitches.
The full-service malware-as-a-service (MaaS) platform offers a Windows implant, command-and-control (C2) infrastructure, and an operator panel for comprehensive remote access.
Cybersecurity agencies in the United States, the United Kingdom, and the Netherlands have detailed a Windows malware that they say Iran's intelligence service uses to spy on dissidents, journalists, and activists around the world. The malware is controlled via the Telegram messaging app and can copy a target's emails and chat messages, take screenshots, and activate the microphone to record
Cybersecurity researchers have disclosed details of a multi-platform campaign that uses the Message Queueing Telemetry Transport (MQTT) protocol as a communication channel to control Windows and Linux systems. The emerging malware family, codenamed BambooToken, is assessed to be active since at least February 2023 and put to use in attacks targeting organizations across Asia and South America.
A previously unknown malware framework called BambooToken, active since at least 2023, is now using the Message Queuing Telemetry Transport (MQTT) protocol to communicate with Windows and Linux systems. [...]
AI is shrinking the time between vulnerability disclosure and exploitation, leaving defenders less time to wait for patches or public exploits. Picus Security explains how exploitability validation, security control testing, and autonomous pentesting can help teams close exposure gaps before attackers arrive. [...]
Australia’s move from the Essential Eight to an outcomes-based cybersecurity model will push organizations from conducting periodic point-in-time, checklist compliance assessments to having continuous evidence of a solid security posture.Key takeawaysThe Australian Signals Directorate (ASD) is moving from the Essential Eight cybersecurity framework to a new outcomes-focused Essentials series covering enterprise IT, cloud, operational technology (OT), and potentially agentic AI.The Essential Eig…
Cloudflare is giving site owners a way to stay discoverable while disallowing AI training. New controls and an Accountable designation establish a shared model with Apple, Google, and Microsoft.
A single X DM split into two malware chains: AMOS stealer on Mac, NetSupport Manager on Windows, see the Huntress SOC analyst breakdown.
Cybersecurity researchers have disclosed details of a mass-scanning campaign that has targeted Vite deployments siphon sensitive data. The first is an automated effort aimed at internet-exposed Vite development servers that's designed to steal cloud credentials, configurations from Amazon Web Services (AWS) and Microsoft Azure instances, and infrastructure state files, per F5 Labs. The
Two China-linked groups ran identical Chrome/Windows zero-day exploits against NGOs, before Chrome’s patch shipped, deploying different backdoors each. Two China-linked threat actors used the same Chrome/Windows zero-day against NGOs starting September 1, 2026, Volexity’s new report lays out the whole chain in detail. On September 1, Volexity detected a spear-phishing campaign by UTA0560 targeting several […]
The Humanist AI Code of Conduct draws a line between defensive cyber research and operational attack capability. The post Microsoft AI Code of Conduct Sets Cyberattack Boundaries, Chain of Command, Safety Constraints appeared first on SecurityWeek.
Ads led to a ClickFix page designed to trick macOS and Windows users into installing malware. The post Hacked HBO Max Reddit Account Used for Malware Delivery via ClickFix Attack appeared first on SecurityWeek.
Microsoft has confirmed that copy and paste may silently fail for some Excel users after installing the September 2026 KB5002914 security update. [...]
A Chinese threat actor has been attributed to a spear-phishing campaign that exploits recently patched security flaws in Google Chrome and Microsoft Windows to deliver a malicious JavaScript backdoor called GRIMWEDGE. Volexity, which is tracking the threat cluster under the moniker UTA0560, said the activity targeted multiple non-governmental organizations (NGOs) on September 1, 2026. "The
