STONE-KNIGHT SECURITY

Researchers at Nebula Security have disclosed GhostLock (CVE-2026-43499), a 15-year-old Linux kernel flaw that lets any logged-in user take full root control of a machine that has not been patched. The vulnerable code has shipped by default in essentially every mainstream distribution since 2011. The flaw needs no…

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added four security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The vulnerabilities are listed below - CVE-2026-48282 (CVSS score: 10.0) - A path traversal vulnerability in Adobe…

Attackers are exploiting the critical Gitea vulnerability CVE-2026-20896 to bypass authentication with a single HTTP header and access vulnerable repositories and secrets. The post Critical Gitea Flaw Under Active Exploitation, Researchers Warn appeared first on SecurityWeek .

Hackers are exploiting a recently patched critical vulnerability (CVE-2026-48282) in Adobe ColdFusion that carries a CVSS score of 10/10. The post Critical Adobe ColdFusion Vulnerability Exploited in Attacks appeared first on SecurityWeek .

Added to KEV 2026-07-07. 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 2026-07-07. 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 2026-07-07. 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 2026-07-07. 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…

After gaining a foothold in thousands of Fortinet firewalls, the attackers are starting to monetize that access, and are also piling on a Nextcloud zero-day bug.

Added to KEV 2026-07-01. 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 2026-06-29. 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…

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 2026-06-23. 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…

A Chinese threat actor tracked as UAT-7810 is actively refining its bespoke malware to expand its Operational Relay Box (ORB) network by breaking into internet-facing networking devices. According to findings from Cisco Talos, UAT-7810 is an advanced persistent threat (APT) actor that's responsible for maintaining…

The phishing campaign uses several tactics, including nested redirects, to evade detection and steal credentials from unsuspecting targets.

Chinese hackers tracked as 'UAT-7810' are actively evolving their malware to expand their Operational Relay Box (ORB) network by compromising internet-facing networking devices, primarily unpatched Ruckus routers. [...]

A hidden authentication backdoor has been found in multiple Tenda router firmware versions, potentially allowing an attacker to gain administrative access to the device's web management panel. [...]

A new Android malware operation called RedWing is being rented out on Telegram as a ready-made bank-fraud service. It lets even low-skill criminals take over a victim's phone, steal their banking logins, and capture the one-time codes that protect their accounts. Zimperium's zLabs, which found the operation, says it…

A Microsoft 365 device code phishing campaign has been observed leveraging collaboration-themed lures to take control of victim accounts between the last week of June 2026 and into early July, per findings from ZeroBEC. "The campaign did not depend on a fake Microsoft password page. It used a malicious…

Researchers say the Iran-linked threat actor used an adaptable modular malware framework and compromised IT service providers to reach high-value targets in Israel. The post Iran-Linked Hackers Using Modular C&C Framework in Cyberattacks appeared first on SecurityWeek .

Tomorrow's webinar explores how behavioral AI can help organizations detect sophisticated phishing, business email compromise, and account takeover attacks while reducing alert fatigue through automated investigation and response workflows. [...]

A suspected China-aligned threat activity cluster has been observed exploiting Roundcube webmail software belonging to physics and engineering departments of U.S. and Canadian universities as part of a new campaign. The activity involves the exploitation of now-patched, critical security flaws in the open-source…

Several versions of firmware released by Chinese network device manufacturer Tenda have been found to embed an undocumented authentication backdoor that enables administrative access to the devices' web management interfaces, the CERT Coordination Center (CERT/CC) warned Monday. "An attacker can exploit this…

A threat group researchers call "Armored Likho" has gained access to government agencies and electrical power entities in Russia, Brazil, and Kazakhstan.

A ransomware-as-a-service gang, an online foreign extremist group and drug traffickers were separately the targets of offensive operations in 2025, according to Canada's Communications Security Establishment.

An "agentic threat actor" successfully exploited a Langflow flaw to steal data from a production database server and encrypt other systems.

The Federal Bureau of Investigation (FBI) said today it worked with industry partners to seize hundreds of domains associated with NetNut, a sprawling residential proxy service operated by the publicly-traded Israeli company Alarum Technologies [NASDAQ: ALAR]. The action comes roughly two weeks after KrebsOnSecurity…

The ransomware campaign relies on basic social engineering and stretches across multiple regions, including the US, Europe, Middle East, and elsewhere.

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…

Two newly disclosed critical vulnerabilities in Adobe ColdFusion and Langflow join two Joomla extension flaws in CISA's Known Exploited Vulnerabilities catalog, with federal agencies given until July 10 to patch. The post CISA Urges Immediate Patching of Exploited ColdFusion, Langflow, Joomla Flaws appeared first on…

IT services giant Accenture has confirmed it suffered a security breach after a threat actor claimed to have stolen 35 GB of source code and other data from the company. [...]

Varonis reported the flaw to Google in late 2025 and it has been addressed, but it reminds defenders to take a fresh look at their AI Infrastructure security.

The alleged victim, believed to be a small Ohio county, reportedly paid the extortion group to prevent the public release of sensitive stolen data. The post County Government Reportedly Paid $1 Million to Cyber Extortion Group appeared first on SecurityWeek .

The company said the breach affected an email system used to manage customer email accounts, webmail services and email storage for five Japanese internet service providers.

Cybersecurity researchers have disclosed details of a now-patched critical session isolation vulnerability in Writer, an enterprise generative artificial intelligence (AI) platform, that could result in cross-tenant compromise. The one-click vulnerability has been codenamed WriteOut by the Sand Security Research…

Attackers wasted little time targeting the latest memory disclosure flaw in Citrix's NetScaler products, after researchers published a proof-of-concept exploit (PoC).

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…

Researchers show how attackers can use a crafted public GitHub Issue to trick AI-powered workflows into exposing data from private repositories without authentication. The post Critical Vulnerability Exposes GitHub Agentic Workflows to Prompt Injection appeared first on SecurityWeek .

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) gave federal agencies until Friday to patch an actively exploited vulnerability in the Langflow visual framework for building AI agents. [...]

Ubiquiti has released security updates to patch seven critical vulnerabilities in UniFi OS, including a maximum-severity flaw that can be exploited in command injection attacks. [...]

The world's digital testing ground plans to help people use AI agents for government purposes.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has ordered government agencies to patch an actively exploited maximum-severity flaw in the Adobe ColdFusion commercial web app development platform by Friday. [...]

A critical flaw in Google's Dialogflow CX could have let an attacker with edit rights on one Code Block-enabled agent compromise other Code Block-enabled agents in the same Google Cloud project. From there, they could read live conversations, steal the data users shared, and make the bots send attacker-written…

A student advocacy organization and tech trade group had appealed to the high court to stay the Texas App Store Accountability Act on an emergency basis until the lower court rules.

The capability, called Cyber Shield, is designed to counter a threat the National Cyber Security Centre (NCSC) said could see attackers “move at machine speed and greater scale, reducing opportunities for detection and response.”

The flaw allows an unauthenticated attacker to craft a GitHub Issue in an org's public repository and then silently pull data from its private repos, too.

The National Police in Spain have arrested a man who is suspected of being an active member of the CyberArmy of Russia Reborn (CARR) and Z-Pentest, both pro-Russian hacktivist groups. [...]

A public issue can trick GitHub Agentic Workflows into leaking the contents of an organization's private repositories, researchers at Noma Security have shown. The attacker needs only to open a normal-looking issue on a public repository, with no stolen credentials and no access to the organization. If that…

ActiveState explains how GitHub Actions attack chains can evade traditional CI security scanners, why passing a scan doesn't guarantee a secure pipeline, and how organizations can better govern their CI/CD workflows. [...]

U.S. prosecutors linked an alleged Scattered Spider hacker to a break-in at a luxury jewelry retailer using a persistent Windows device ID, according to a newly unsealed federal complaint. Microsoft records tied that ID first to the account the attackers used to keep access during the May 2025 intrusion, then to…

The audits are reportedly being spearheaded by CISA’s Attack Surface Evaluation team, a specialized unit tasked with conducting digital defense assessments and simulated hacking exercises. The post CISA Reportedly Using Anthropic’s Mythos to Scan Government Software for Flaws appeared first on SecurityWeek .

Those that did sign include large firms such as Aviva, the London Stock Exchange Group and Marks & Spencer, which lost hundreds of millions of pounds in a cyberattack last year, as well as small cybersecurity consultancies.

A 16-year-old Linux kernel vulnerability, dubbed Januscape, allows attackers to escape a virtual machine and execute arbitrary code on the host. [...]

Tarah Wheeler is CISO at TPO Group, a firm that provides cybersecurity consultancy for high-stakes organizations. But despite this elevated position, her journey was far from typical. The post CISO Conversations: Tarah Wheeler, Cybersecurity Leader, Thought Leader and Original Thinker appeared first on SecurityWeek .

Software supply chain security was hard enough. Then AI joined the build pipeline. For five years, "software supply chain security" meant one question: what's in your code? Which open-source packages, which versions, which transitive dependencies three layers deep that nobody chose on purpose? SolarWinds, Log4Shell,…