GENERAL Security Advisories

🟠 High | Source: The Register — Security A security researcher has publicly leaked Microsoft exploit code in protest at how the company handles vulnerability disclosures, following a similar incident by a researcher known as Nightmare Eclipse. The move bypasses responsible disclosure norms, meaning working exploits are now publicly available before Microsoft has necessarily issued patches. This significantly raises the risk for organisations running unpatched Microsoft and Azure environments. Architect’s Take: Review your Microsoft and Azure patch status immediately and prioritise any outstanding security updates — publicly available exploit code dramatically shortens the window between disclosure and active exploitation. Ensure your vulnerability management process includes alerting on zero-day and pre-patch public exploit releases, not just CVE publication. ...

🟠 High | Source: The Register — Security A security researcher has publicly leaked Microsoft exploit code in protest at how the company handles vulnerability disclosures, following a similar incident by a researcher known as Nightmare Eclipse. The researcher chose to bypass responsible disclosure and release exploits immediately, arguing Microsoft’s process is inadequate. This creates immediate risk as working exploit code is now publicly available before patches may be widely applied. ...

🟡 Medium | Source: The Hacker News Modern enterprise identity and access management (IAM) is increasingly fragmented across applications, machine identities, and decentralised teams, creating blind spots known as ‘Identity Dark Matter’ — activity that falls outside centralised IAM controls. Identity Visibility and Intelligence Platforms (IVIP) are emerging as a way to consolidate this visibility and reduce the exploitable attack surface. This matters because unmanaged identities are a primary vector for privilege abuse and lateral movement in cloud environments. ...

🟢 Low | Source: Schneier on Security Researchers are applying machine learning techniques to crack historical hand-written ciphers used in medieval correspondence, including diplomatic and personal communications. While academically fascinating, this work demonstrates that AI can systematically analyse and break pattern-based encryption schemes that were previously considered too obscure to decode at scale. It highlights the broader capability of AI to accelerate cryptanalysis against weak or legacy cipher designs. Architect’s Take: No immediate action is required, but this research serves as a timely reminder to audit any legacy or proprietary encryption schemes in your environment — AI-assisted cryptanalysis lowers the bar for breaking non-standard ciphers. Ensure all sensitive data at rest and in transit is protected by modern, well-vetted standards such as AES-256 and TLS 1.3, and avoid reliance on security through obscurity. ...

🟢 Low | Source: Schneier on Security Researchers are applying machine learning techniques to decode historical hand-written ciphers used in medieval correspondence, including diplomatic and personal communications. Whilst not a direct cybersecurity threat, it demonstrates AI’s growing capability to break encryption schemes that were previously considered uncrackable. This has broader implications for understanding how AI might be applied to attack legacy or weak cryptographic implementations. Architect’s Take: No immediate action required, but treat this as a signal to audit any legacy or non-standard encryption schemes in your environment — if AI can crack medieval ciphers, weak or deprecated algorithms (e.g. DES, MD5, RC4) are increasingly at risk. Ensure your cryptographic inventory is up to date and aligned with current NCSC guidance. ...

🟢 Low | Source: The Register — Security Anthropic has expanded its Glasswing partner programme fourfold, inducting 150 new organisations including the first non-US members, while UK banks have notably been excluded from the initiative. In parallel, OpenAI is offering UK financial institutions access to GPT-5.5, highlighting a competitive dynamic in AI partnerships within the regulated financial sector. The exclusion raises questions around data sovereignty, regulatory compliance, and which AI vendors UK-regulated entities can practically partner with. ...

🟢 Low | Source: The Register — Security Anthropic has expanded its Glasswing partner programme fourfold, inducting 150 new organisations including the first non-US members, while UK banks have notably been excluded. OpenAI has moved to fill the gap by offering UK financial institutions access to GPT-5.5. The development highlights growing competitive dynamics in enterprise AI access and raises questions about supply chain concentration risk for financial sector security teams. Architect’s Take: Cloud security architects in UK financial services should assess the security posture, data residency commitments, and compliance certifications of any AI provider they are offered as an alternative — do not treat OpenAI’s GPT-5.5 access as a like-for-like replacement for Anthropic without conducting due diligence on API security controls, data handling agreements, and regulatory alignment with FCA/PRA expectations. ...

🟠 High | Source: The Hacker News An unpatched vulnerability in Windows’ ‘search:’ URI handler can be exploited to leak a user’s NTLMv2 credential hash to an attacker, similar to a recently disclosed flaw in the Windows Snipping Tool (CVE-2026-33829). NTLMv2 hashes can be cracked offline or used in relay attacks to authenticate as the victim. The vulnerability remains unpatched, making it an active risk for any Windows environment, including cloud-connected hybrid setups. ...

🟠 High | Source: The Hacker News A newly discovered vulnerability dubbed ‘HTTP/2 Bomb’ allows attackers to remotely crash major web servers — including NGINX, Apache HTTPD, Microsoft IIS, Envoy, and Cloudflare Pingora — without authentication. The flaw exploits default HTTP/2 configurations, meaning most deployments are vulnerable out of the box. Because it affects such a broad range of widely used infrastructure, the potential impact is significant across cloud and on-premises environments alike. ...

🟡 Medium | Source: The Hacker News A malware-as-a-service campaign dubbed Weedhack has been targeting Minecraft players since January 2026, distributing malicious software disguised as game clients and mods via YouTube. The operation has already compromised approximately 86,000 systems and includes components such as CountLoader and cryptocurrency miners. The campaign highlights how gaming communities remain a significant vector for delivering credential-stealing and system-control malware at scale. Architect’s Take: If your organisation permits personal devices or BYOD access to cloud workloads, ensure endpoint detection controls can identify MaaS-delivered loaders such as CountLoader, and audit whether compromised personal credentials could pivot into corporate cloud environments via SSO or reused passwords. ...