STONE-KNIGHT SECURITY

CISA has added the remote code execution flaw CVE-2026-12569 to its Known Exploited Vulnerabilities catalog. The post First-Ever Exploitation of PTC Windchill Vulnerability Discovered in the Wild appeared first on SecurityWeek .

The exploited flaw, CVE-2025-67038, is one of the vulnerabilities disclosed in April as part of the BRIDGE:BREAK research project. The post Lantronix Serial-to-IP Converter Flaw Exploited in Attacks After OT Threat Warning appeared first on SecurityWeek .

An unknown threat actor exploited a recently disclosed high-severity security flaw impacting Cisco Catalyst SD-WAN as a zero-day at least two months before it was publicly disclosed, according to new findings from Google-owned Mandiant. The vulnerability, tracked as CVE-2026-20245 (CVSS score: 7.8), allows an…

Added to KEV 2026-06-25. 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 2026-06-25. 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…

New details have been revealed on how hackers exploited a Cisco Catalyst SD-WAN vulnerability tracked as CVE-2026-20245 in zero-day attacks to create rogue root accounts on targeted devices. [...]

Added to KEV 2026-06-23. 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 2026-06-23. 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 2026-06-23. 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 2026-06-23. 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 2026-06-18. 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 2026-06-16. 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 2026-06-15. 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 2026-06-15. 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 2026-06-12. 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 2026-06-11. 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…

Microsoft today released software updates to plug nearly 200 security holes across its Windows operating systems and supported software, a record number of fixes for the company's monthly Patch Tuesday cycle. Nearly three dozen of those bugs earned Microsoft's most dire "critical" rating, and exploit code for at…

Added to KEV 2026-06-09. Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. by 2026-06-23. Google Chromium V8 out-of-bounds read and write vulnerability that could allow a remote attacker to execute…

An active phishing campaign has been targeting hotel and other hospitality organizations across Europe and Asia since April 2026, using photo-themed ZIP files to drop a Node.js implant and dig into front-desk machines, Microsoft says. The company has not attributed the activity to a known threat actor, and the…

Turla has been using the backdoor against government and military organizations in Ukraine for espionage. The post Russian APT Deploys ‘StockStay’ Backdoor Against Ukrainian Targets appeared first on SecurityWeek .

The Russian state-sponsored threat actor known as Turla has been attributed to a previously undocumented .NET backdoor called STOCKSTAY that has been deployed against government and military organizations in Ukraine, and entities that have an interest in Italian foreign policy. Describing the Windows backdoor as…

The FSB state-sponsored operation has gotten a lot better at loading its malware and hiding its servers.

Threat actors are increasingly abusing Shop, the order-tracking app from Shopify, by adding fake purchase receipts in users' order histories to trick them into providing sensitive data or installing remote access software. [...]

A newly discovered macOS malware dubbed "Gaslight" is designed to confuse AI-assisted malware analysis tools by hiding prompt injection strings and fake debugging data within the executable. [...]

The Bluekit phishing-as-a-service platform continues to evolve with nearly 70 new hostnames identified over the past week and by adding browser-in-the-middle capabilities for improved data theft. [...]

It’s dumb out there again. This week has the usual smell of prod on fire and nobody wanting to admit who left the door open — old creds still working, trusted apps doing sketchy crap, browser tricks jumping the fence, and “normal” workflows turning into phishing pipes because apparently email was not enough hell…

After a global lull, ransomware gangs are setting sights on a rich new arena: attacking EU organizations and their suppliers.

A previously undocumented Rust-based macOS implant and information stealer has been found to embed a prompt injection payload designed to trick a malware analyst's artificial intelligence (AI) tools and trick it into aborting or refusing an analysis of the artifact. The malware has been codenamed Gaslight owing to…

A new, stealthy backdoor named Mistic has been deployed as part of suspected financially motivated attacks aimed at multiple organizations spanning insurance, education, IT, and professional services sectors since April 2026. According to Symantec and Carbon Black's Threat Hunter Team, the backdoor, also tracked as…

Microsoft touted its latest action against malware infrastructure as a new approach aimed at the full cybercrime "supply chain." Europol said more than 300 servers were targeted.

A coordinated law enforcement operation, in partnership with private sector companies, including Bitdefender, Bitsight, ESET, and Microsoft, has resulted in the takedown of criminal infrastructure powering Amadey and StealC. "The main common goal was to disrupt the 'assembly lines' cybercriminals use to launch…

For the past four years, a sprawling Android-based botnet called Popa has forced millions of consumer TV boxes to relay Internet traffic linked to advertising fraud, account takeovers, and mass data-scraping efforts. This week, researchers from multiple security firms concluded that the Popa botnet is linked to…

A cybercrime group known as The Gentlemen has emerged as the second most active ransomware gang by victim count, rapidly attracting a talented pool of hackers through an aggressive recruitment strategy that promises affiliates 90 percent of any ransom paid by victims. This post examines clues pointing to a real life…

Canadian authorities on Wednesday arrested a 23-year-old Ottawa man on suspicion of building and operating Kimwolf, a fast spreading Internet-of-Things botnet that enslaved millions of devices for use in a series of massive distributed denial-of-service (DDoS) attacks over the past six months. KrebsOnSecurity…

The latest GitLab CE/EE updates address 13 vulnerabilities, including three high-severity defects. The post GitLab Patches Code Execution, Information Disclosure Vulnerabilities appeared first on SecurityWeek .

Researchers believe rogue peering was used to connect to the victim's SD-WAN devices to gain admin privileges and root-level access.

Lawmakers in both houses of Congress are demanding answers from the U.S. Cybersecurity & Infrastructure Security Agency (CISA) after KrebsOnSecurity reported this week that a CISA contractor intentionally published AWS GovCloud keys and a vast trove of other agency secrets on a public GitHub account. The inquiry…

Until this past weekend, a contractor for the Cybersecurity & Infrastructure Security Agency (CISA) maintained a public GitHub repository that exposed credentials to several highly privileged AWS GovCloud accounts and a large number of internal CISA systems. Security experts said the public archive included files…

Mandiant has helped the California water utility investigate the cyberattack launched by Iranian hacker group Handala. The post Cal Water Says No OT Systems Breached in Iranian Handala Cyberattack appeared first on SecurityWeek .

The decentralized prediction market said hackers targeted some of its users through a compromise of a third-party vendor. The post $3 Million Reportedly Stolen in Polymarket Hack appeared first on SecurityWeek .

Russian authorities used Cellebrite's UFED forensic tools to break into the iPhone of detained opposition activist Andrey Pivovarov in June 2021, three months after Cellebrite said it would stop selling its tools and services to Russia and Belarus. The finding, published June 25 by the Citizen Lab, rests on two…

A major overhaul of the Model Context Protocol shifts critical security responsibilities from the protocol itself to developers and platform operators. The post New Enterprise-Ready MCP Specification Brings New Security Challenges appeared first on SecurityWeek .

Martin brings experience from Coinbase, Palantir, Amazon, and the U.S. Army to lead Uber's cybersecurity and enterprise security organization. The post Philip Martin Joins Uber as Chief Information Security Officer appeared first on SecurityWeek .

Anthropic appears to be testing Claude Cowork support on mobile, allowing you to manage long-running Claude tasks from your phone. [...]

Authorities in Poland have arrested four members of an organized cybercrime group accused of breaching telecommunications partners and hijacking email accounts to carry out SIM-swapping attacks. [...]

The flaw enables server-side request forgery (SSRF) and escalates privileges to root, impacting Cisco Unified CM and Unified CM SME deployments.

Educational institutions, the edtech companies they rely on, and, more concerningly, the challenges they pose for schools are the focus of the latest Reporters' Notebook video series.

With tens of billions of dollars flowing into regional economies from cybercrime, scam centers continue to flourish, despite international and law-enforcement efforts.

Once a new CISA director is in place, the agency will ramp up hiring efforts, Homeland Security Secretary Markwayne Mullin told lawmakers. The White House has not yet announced a nominee.

Microsoft has quietly extended its free Windows 10 Extended Security Updates (ESU) program for consumers by an additional year, allowing enrolled devices to continue receiving security updates until October 12, 2027. [...]

A major sports piracy ring linked to the illegal PirloTV streaming platform has been disrupted in an action that targeted 44 domains. [...]

A dairy products manufacturer in Russia's republic of Bashkortostan is the latest such company to have its operations snarled by a cyberattack.

An analysis of a popular Google Chrome ad block extension for YouTube has uncovered the ability to execute arbitrary JavaScript code. According to Island, the extension, named Adblock for YouTube (ID: cmedhionkhpnakcndndgjdbohmhepckk), has more than 10 million installs and carries a Featured badge on the Chrome Web…

Fraudsters don't attack just one transaction. They target accounts, platforms, and entire ecosystems. IPQS explains the four elevations of fraud prevention and why broader visibility improves fraud detection. [...]

The startup’s platform functions as a secure control layer, aiming to secure AI tools across enterprises. The post Runlayer Raises $30 Million in Series A Funding appeared first on SecurityWeek .

Ukraine's state-owned postal operator said it was experiencing disruptions to some of its app services due to a suspected cyberattack, but did not say who was behind it.

The continued use of the powerful data extraction product soon after the company in March 2021 said it would stop working with Russia suggests the firm has been unable to pull back its technology from authoritarian government customers, researchers say.