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🟠 High | Source: The Hacker News Agentic AI systems are increasingly being deployed in defence and security networks, but this introduces new attack surfaces — illustrated by reports that an unauthorised group claimed access to Anthropic’s Claude Mythos model within hours of a limited technical preview. The incident highlights that AI capabilities in high-stakes environments are only as secure as the infrastructure underpinning them. Without robust access controls, segmentation, and identity governance, agentic AI deployments can become a significant liability rather than a force multiplier. ...

🟡 Medium | Source: The Hacker News This is a weekly threat bulletin covering a broad range of active security issues, including AI agent exploitation, command-and-control tooling, ClickFix social engineering campaigns, JavaScript backdoors, and over 20 additional threat stories. It matters because it reflects the accelerating normalisation of sophisticated attack techniques being accessible to lower-skilled threat actors, and highlights emerging risks from AI systems being leveraged in real attacks. Architect’s Take: Use this bulletin as a prompt to review your threat model against ClickFix-style social engineering vectors and any AI agent integrations in your environment — particularly where agents have access to cloud APIs or can execute code. Ensure your JavaScript supply chain controls and browser security policies are current. ...

🟠 High | Source: The Hacker News A China-linked threat actor, TA4922, has expanded its phishing campaigns beyond its previous targets to now include organisations in the UK, Germany, Italy, and South Africa. The group is deploying known malware families including ValleyRAT and Atlas RAT, with a rapidly evolving toolkit suggesting well-resourced, sustained operations. This represents a significant escalation in geographic scope and poses a direct threat to European enterprises. Architect’s Take: Review and tighten email gateway controls to block phishing lures associated with TA4922, and ensure endpoint detection rules cover ValleyRAT (Winos 4.0) and Atlas RAT indicators. Consider hunting for lateral movement or C2 beaconing patterns consistent with these RAT families across cloud-hosted workloads and on-premises infrastructure. ...

🟠 High | Source: The Hacker News A China-linked threat group, TA4922, has significantly expanded its phishing campaigns beyond its previous targets to now include organisations in the UK, Germany, Italy, and South Africa. The group is deploying known remote access trojans including ValleyRAT and Atlas RAT, with a fast-moving operational pace and an evolving malware toolkit. This matters because the expansion into European markets signals a deliberate strategic shift, increasing risk for organisations in these regions. ...

🟡 Medium | Source: The Register — Security The Five Eyes intelligence alliance has issued a warning about China’s ongoing campaign to recruit Western nationals via LinkedIn and other professional networks, offering cash in exchange for state secrets and sensitive government or corporate information. The campaign targets individuals with access to classified or commercially valuable data, using social engineering tactics that have been observed for several years but appear to be intensifying. This matters because cloud engineers and architects working on government or defence-adjacent projects are plausible targets given their access to sensitive infrastructure. ...

🟠 High | Source: The Register — Security The Five Eyes intelligence alliance has issued a warning about China’s ongoing campaign to recruit Western government employees and contractors via LinkedIn, offering cash in exchange for state secrets. The tradecraft involves seemingly innocuous connection requests that escalate into paid intelligence relationships. This is a long-running threat that intelligence officials say continues to grow in scale and sophistication. Architect’s Take: Cloud security architects with clearances or access to sensitive government cloud environments should review their organisation’s social media policies and ensure staff handling sensitive infrastructure are briefed on LinkedIn-based social engineering. Consider implementing insider threat monitoring and reinforcing acceptable use policies around unsolicited professional contact from unknown foreign nationals. ...

🟠 High | Source: The Hacker News A macOS malvertising campaign called Operation FlutterBridge is distributing a new backdoor, FlutterShell, through malicious Google and YouTube advertisements. The campaign is an evolution of a previously identified threat cluster (JSCoreRunner/FileRipple) first observed in late 2025. This matters because it uses trusted ad platforms to target macOS users, broadening the attack surface beyond traditional phishing vectors. Architect’s Take: Enforce endpoint detection and response (EDR) tooling on all macOS devices, including developer and privileged-access workstations, and consider restricting or monitoring ad-network traffic at the corporate proxy or DNS layer. Review browser isolation and application allowlisting policies to limit the execution of unsigned or unnotarised binaries delivered via browser-based download prompts. ...

🟡 Medium | Source: The Register — Security Two former RAC employees who sold personal data belonging to car crash victims to claims management companies have been ordered to repay £118,000 under the Proceeds of Crime Act, following earlier sentences of imprisonment and community service. The pair exploited their privileged access to customer data for financial gain, representing a textbook insider threat and data protection failure. The case underscores the real-world financial and legal consequences of misusing access to sensitive personal data. ...

🟡 Medium | Source: The Register — Security Two former RAC employees who unlawfully accessed and sold personal data belonging to car crash victims have been ordered to repay £118,000 under the Proceeds of Crime Act, following earlier sentences of imprisonment and community service. The pair exploited their privileged access to customer data systems to pass information to claims management companies. The case highlights the ongoing risk of insider threats and the serious financial consequences now being pursued by regulators and prosecutors. ...

🟠 High | Source: Schneier on Security Attackers are exploiting Meta’s AI support chatbot to hijack Instagram accounts by tricking the bot into adding a hacker-controlled email address and issuing a password reset. The attack requires no prior account access and bypasses Instagram’s automated protections using a VPN to spoof the victim’s location. This demonstrates a critical flaw in how AI-powered support systems validate identity before performing sensitive account actions. Architect’s Take: Organisations deploying AI chatbots for customer support or account management must enforce out-of-band identity verification for any privileged actions — such as adding credentials or triggering resets — and ensure the AI cannot be the sole authorisation path for account takeover-enabling operations. Review your own AI assistant integrations for similar trust boundary weaknesses where bot-initiated actions bypass human or MFA controls. ...