STONE-KNIGHT SECURITY

Cisco warned customers to patch a critical Secure Email Gateway zero-day security flaw that threat actors have been exploiting in attacks. [...]

Cisco has warned that a new critical vulnerability impacting AsyncOS Software for Cisco Secure Email Gateway has come under active exploitation in the wild. The vulnerability, tracked as CVE-2026-76461, carries a CVSS score of 9.8 out of a maximum of 10.0. It has been described as a case of insufficient validation in…

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…

An unauthenticated attacker can exploit CVE-2026-76461 to execute arbitrary commands on the underlying OS with root privileges. The post Root RCE Zero-Day in Cisco Secure Email Gateway Under Active Exploitation appeared first on SecurityWeek .

CVE-2026-85706 is a path traversal vulnerability with a 10 out of 10 CVSS score, affecting both GitLab Community Edition and Enterprise Edition instances.

A suspected Chinese threat actor tracked as Red Heron has been attributed to the rapid exploitation of a recently disclosed security vulnerability in Gitea to compromise internet-facing instances as part of a multi-national campaign. "Red Heron scanned 1,386 Gitea instances across seven countries and maintained a…

Added to KEV 2026-09-14. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…

The Dubai-based threat detection startup uses artificial intelligence tools to scan billions of IP addresses to find exposed assets, leaked data, and zero-day vulnerabilities.

Added to KEV 2026-09-11. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…

Added to KEV 2026-09-11. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…

Added to KEV 2026-09-11. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…

Added to KEV 2026-09-11. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…

The disgruntled researcher continued their vendetta against Microsoft by publishing yet another zero-day exploit for Windows Defender.

Added to KEV 2026-09-10. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…

Added to KEV 2026-09-10. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…

Added to KEV 2026-09-09. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…

Added to KEV 2026-09-09. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…

Added to KEV 2026-09-09. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…

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 .

The notorious Russian threat group is spreading an upgraded version of the botnet malware, which the FBI disrupted in 2022.

Hackers compromised HBO Max's official Reddit account and used it to push malicious ads that launched ClickFix attacks to infect Windows and macOS devices with information-stealing malware. [...]

An attacker was operating inside the network of 3BB, one of Thailand's largest broadband providers, and maintained remote control of internal machines using a legitimate management tool called MeshCentral, threat intelligence firm Hunt.io said. The company uncovered the intrusion by examining a server the attacker…

A mass-scanning campaign targeting internet-exposed Vite development servers is attempting to steal cloud credentials and configurations from AWS and Azure deployments. [...]

The pro-Ukraine hacktivist group Hacking Cat has evolved from carrying out website defacements and data leaks to more sophisticated and destructive attacks on Russian targets, researchers said.

Stolen credentials were used in a multi-month campaign to access subscriber personal data and billing records. The post Telus Warns Customers of Account Breaches appeared first on SecurityWeek .

Microsoft has disclosed details of two campaigns in which threat actors are abusing third-party email delivery infrastructure to blast financial fraud scam messages and using passkey-themed social engineering to breach cloud environments. The first campaign, per the tech giant, involved sending over a million scam…

The GoldFactory threat group exploits the Android Work Profile feature to deliver the Gigabud Trojan, while Mantax Otax spreads separately.

Japan's Digital Agency has discovered a data breach that may have exposed around 246,000 record rows containing personal information of government employees. [...]

Researchers have disclosed a new hardware attack, called DDRop, that breaks the memory protection in Intel and AMD confidential computing by silently dropping writes to a server's memory, so the processor keeps reading old encrypted data as if it were current. The attack requires an attacker who already controls the…

AI keeps showing up in the wrong places. Attackers are using it to speed up exploits, test defenses, and automate more of the job. Some models are also crossing lines on their own. That is not a great combination. The rest of the week is more familiar: old bugs still working, fresh exploit chains, exposed systems,…

The company unintentionally disclosed users’ information to a third party impersonating a government agency. The post Personal, Financial Info Exposed in Revolut Data Breach appeared first on SecurityWeek .

A new joint government advisory signals a regulatory shift, pressing organizations to adopt more transparent breach notification and incident response protocols.

Threat actors are leveraging Microsoft's Graph API to identify lucrative targets, then passing their access to extortion groups like ShinyHunters.

Authorities in Australia have arrested two men believed to be members of TeamPCP, a prolific cybercrime and data extortion group blamed for perpetrating the longest running spree of software supply chain attacks ever. In a statement released today, the Australian Federal Police (AFP) said two unnamed suspects from…

The Cybersecurity and Infrastructure Security Agency (CISA) has issued a postmortem on a data leak in which a contractor published dozens of internal CISA credentials -- including AWS Govcloud keys -- in a public GitHub repository for almost six months before being notified by KrebsOnSecurity. Experts say the gaps…

The Chinese-language input method editor for Windows can allow attackers to execute arbitrary code remotely. The post Chinese Hackers Exploit Critical Tencent Software Flaw for One-Click Code Execution appeared first on SecurityWeek .

Five alleged leaders of the Black Axe cybercrime syndicate, known for its involvement in global-scale cyber-enabled financial fraud, have been extradited to the United States to face wire fraud and money laundering charges. [...]

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 .

Microsoft has confirmed that copy and paste may silently fail for some Excel users after installing the September 2026 KB5002914 security update. [...]

A critical vulnerability in LiteSpeed Web Server Enterprise could let a low-privilege website user gain root access on a shared-hosting server, cPanel warned in an advisory published on September 14. On such servers, many customers' sites run on a single machine, and an attacker with one of those hosting accounts…

Microsoft has released emergency out-of-band Windows updates to fix Remote Desktop Services failures caused by this month's security updates, along with Hyper-V and USB audio problems on some Windows versions. [...]

Homebrew package manager version 7.0.0 has been released with a built-in vulnerability scanner, stronger security controls, and the full release of its native BrewUI graphical interface. [...]

Prosecutors unsealed a 2021 indictment accusing the five men of conducting lucrative romance scams that stole thousands of dollars from more than 100 people.

A browser extension called Twitch Enhanced Viewer | JeetBot, available in the official Chrome and Firefox stores, sends users' Twitch OAuth session tokens to a commercial bot service. [...]

A flaw in Telegram Desktop let a bot's message plant hidden JavaScript inside chats that users exported to HTML files, security researchers at ExPatch said in a writeup published on September 12. In Telegram, the message looked ordinary, with a link button, and the script ran only when someone opened the export file…

Dario Amodei says it's time to slow the pace of frontier AI improvements so that security and risk prevention efforts can catch up. What does this mean for enterprises?

The sites are designed to collect victims’ contact details, which scammers then use to target them through phone or email to steal money, personal information or gain access to their devices.

WordPress has announced it's launching an automated security review for every release of a plugin before it's distributed through the WordPress.org update API so as to analyze it for potential security issues and ensure there are no risks involved. "New plugins are reviewed before they enter the directory, but…

China’s Ministry of Foreign Affairs responded to a question about Amodei’s essay by saying that all parties should work together on AI. The post Beijing Hits Back at Anthropic CEO’s Call to Curb China’s AI Development appeared first on SecurityWeek .

Patch automation can help IT teams keep pace with growing update volumes, but deploying faster also means bad updates can spread faster. Action1 explains how update rings, predefined success criteria, and human oversight can make automated patching faster without sacrificing control. [...]

Concerns over the potential risks of the technology are rising as new AI models become more powerful, heightening both the potential for misuse by people with criminal aims. The post New Warnings About the Risks of AI to Humanity Revive a Long-Running Debate appeared first on SecurityWeek .

As researchers warn that misaligned AI could threaten human survival, even beneficial systems may erode the critical thinking that defines our humanity. The post The Race to Control AI and Protect What Makes Us Human appeared first on SecurityWeek .

Attackers can combine social engineering with malicious OAuth applications to gain access to Google Workspace data without relying solely on stolen passwords. This webinar examines two attacks to show how these breaches unfold and which security controls can help stop them. [...]

British fintech company Revolut confirmed disclosing sensitive customer data to fraudsters who submitted emergency data requests from a legitimate government email account.