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Morning Muster Daily cyber threat brief · CESAR feed
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Updated 2026-08-22 11:02 UTC
Articles: 96 · Sources: 8
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🌍 Global Ransomware Heatmap 2445 victims · last 90d · top: US

Critical CVEs & Vulnerabilities 18 items

SecurityWeek2026-08-21 12:26 UTC
The type confusion bug can lead to V8 sandbox escape and control-flow hijacking of the host process. The post Critical Isolated-vm Vulnerability Leads to RCE on Host appeared first on SecurityWeek .
SecurityWeek2026-08-21 08:12 UTC
A total of 22 patches were releaased, a majority for code execution, privilege escalation, and information disclosure vulnerabilities. The post Microsoft Patches Exploited Entra ID Vulnerability appeared first on SecurityWeek .
The Hacker News2026-08-21 07:04 UTC
A newly disclosed security flaw in GitLab has come under active exploitation within days of public disclosure, according to watchTowr. The vulnerability in question is CVE-2026-19478 (CVSS score: 9.4), a case of code injection that allows an unauthenticated attacker to modify or delete publicly accessible GitLab…
CISA KEV2026-08-21 00:00 UTC
Added to KEV 2026-08-21. 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 Hacker News2026-08-20 17:23 UTC
A lot of this week’s trouble starts with something trusted doing exactly what it was allowed to do. Signed drivers get turned against defenses. Legitimate apps help malware blend in. A weak header check opens a path to code execution. Elsewhere, exposed systems, old bugs, odd hiding tricks, and AI-assisted exploit…
CISA KEV2026-08-20 00:00 UTC
Added to KEV 2026-08-20. 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…
CISA KEV2026-08-19 00:00 UTC
Added to KEV 2026-08-19. 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…
CISA KEV2026-08-18 00:00 UTC
Added to KEV 2026-08-18. 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…
CISA KEV2026-08-18 00:00 UTC
Added to KEV 2026-08-18. 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…
CISA KEV2026-08-17 00:00 UTC
Added to KEV 2026-08-17. 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…
CISA KEV2026-08-11 00:00 UTC
Added to KEV 2026-08-11. 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…
CISA KEV2026-08-11 00:00 UTC
Added to KEV 2026-08-11. 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…
CISA KEV2026-08-11 00:00 UTC
Added to KEV 2026-08-11. 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…

Active Threats & Malware 16 items

SecurityWeek2026-08-22 08:30 UTC
The spyware-equipped Manic, a persistent Grandoreiro campaign in Latin America and Europe, and an expanded ToxicPanda 2.0 malware. The post Banking Trojans Manic, Grandoreiro, ToxicPanda 2.0 in the Spotlight appeared first on SecurityWeek .
The Hacker News2026-08-21 18:53 UTC
Cybersecurity researchers have discovered a set of trojanized npm packages that masquerade as working calendar and streak utilities but are engineered to stealthily deliver an artificial intelligence (AI)-powered Linux implant dubbed RedC2 4.0. "When the module loads, it locates the bundled binary, marks it…
The Hacker News2026-08-21 15:41 UTC
Cybersecurity researchers have flagged a new malware family that's specifically designed to infect Android-based vehicle head unit firmware developed by DoFun. Kaspersky, which discovered the threat in June 2026, said the end goal of the malware is to serve a multi-stage downloader to enable ad fraud and creation of…
SecurityWeek2026-08-21 14:22 UTC
Researchers say iAuthFlow V2 can register an attacker-controlled passkey, enabling persistent access even after passwords are changed and active sessions revoked. The post New Phishing Toolkit Uses Passkeys to Maintain Access After Password Resets appeared first on SecurityWeek .
The Hacker News2026-08-20 20:22 UTC
The Rust Project has deleted malicious versions of three widely used Rust crates from crates.io after a compromised maintainer account published releases that added a typosquatted dependency whose build script downloaded and executed a remote payload during compilation. The affected releases are arrayref 0.3.10,…
Bleeping Computer2026-08-20 14:01 UTC
AI is making phishing attacks more personalized, convincing, and difficult for traditional email filters to detect. Kaseya explains how MSPs can monitor identity, email, and endpoint activity to detect and contain attacks that make it past the inbox. [...]
Krebs on Security2026-07-02 19:27 UTC
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…

Data Breaches 6 items

The Hacker News2026-08-21 15:52 UTC
Check Point Research has disclosed a technique that uses Microsoft Defender's own legitimately signed boot-time remediation driver to perform arbitrary kernel-level file and registry operations on Windows systems ranging from Windows 7 through Windows 11 25H2, with no software flaw exploited and no driver imported…
Bleeping Computer2026-08-21 10:10 UTC
Toronto's Hospital for Sick Children (SickKids) says a cybersecurity incident exposed the personal information of some current and former employees and job applicants, stemming from a flaw in third-party software. Clinical systems and patient records were not affected. (264) [...]
The Hacker News2026-08-20 14:36 UTC
Adversa AI has disclosed an attack technique that it says can cause xAI's Grok chatbot to send a user's name, approximate location, subscription tier, and the prompts from the ongoing conversation to an attacker-controlled server after the user asks it to summarize an ordinary web page. The AI security company, which…
Krebs on Security2026-07-13 15:03 UTC
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…

Nation State Activity 3 items

SecurityWeek2026-08-21 09:23 UTC
Hackers pushed a poisoned arrayref version that added a dependency to fetch a malicious payload from a remote server. The post Rust Supply Chain Attack Linked to North Korean Hackers appeared first on SecurityWeek .
The Hacker News2026-08-20 19:59 UTC
Three distinct suspected Russian cyber espionage threat clusters have been observed leveraging legitimate authentication flows to single out individuals working in academia, aerospace and defense, governments, and think tanks across Europe, as well as academia and think tanks within the U.S. These clusters include…

Tools & Research 18 items

Dark Reading2026-08-21 17:36 UTC
The Open Worldwide Application Security Project has a brand-new top 10 security list tailored for the modern era, and it debuts a Universal Skill Format to add consistency and security to the AI add-ons.
SecurityWeek2026-08-21 16:27 UTC
The newly-formed Nakasone Group will counsel government leaders, corporations, prominent families, and other private clients confronting cybersecurity, geopolitical, and personal security risks. The post Former NSA Director Paul Nakasone Launches National Security Advisory Firm appeared first on SecurityWeek .
SecurityWeek2026-08-21 14:34 UTC
Researchers say the new ‘Cryptographic Context Injection’ technique conceals malicious instructions until they are decrypted inside a trusted execution environment. The post Encrypted Prompts Bypass AI Safety Guardrails in Grok and Gemini appeared first on SecurityWeek .
Bleeping Computer2026-08-21 14:00 UTC
Using the same email, phone number, payment method, and other identifiers makes it easier for data brokers and attackers to profile your activity. Anonyome Labs explains how separate digital personas can reduce correlation and limit the impact of breaches, spam, and identity theft. [...]
The Hacker News2026-08-21 11:21 UTC
Artificial Intelligence (AI) has become one of this decade's defining technologies. From healthcare and finance to manufacturing and education, organizations increasingly rely on AI to automate repetitive tasks, uncover patterns hidden within large datasets, and support faster decision-making. Cybersecurity has…
The Hacker News2026-08-21 10:03 UTC
Cisco has published another round of security updates for Crosswork platforms and Secure Workload Software as part of a continued comprehensive internal security review. Four of the security vulnerabilities affect Crosswork Data Gateway, Crosswork Network Controller, and Crosswork Planning, regardless of the device…
The Hacker News2026-08-21 06:06 UTC
Update: The story was updated after publication to note that the vulnerability has not been exploited. Although the security bulletin originally marked the "Exploited" field under the Exploitability Assessment table as "Yes," on August 21, 2026, Microsoft corrected the "Exploited" status to "No" after The Hacker News…
Dark Reading2026-08-20 19:11 UTC
In this video, Dark Reading editors discuss some of the news they didn't get a chance to cover, including some scary airplane security risks and the US government's newest "hack back" strategy.
Dark Reading2026-08-20 17:39 UTC
The popular "Passportal" password manager, favored by MSPs and SMBs, remains risky even after its patch, thanks to its cloud-based design. Should these products stay away from the cloud entirely?

📺 NetworkChuck Cliff Notes

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