Category: Security

15 April 2026
ACL permission models that break as infrastructure grows

I’ve lost enough evenings to home lab automation pitfalls to know the real trouble starts with small defaults, not big failures. ACL permission models that break as infrastructure grows are usually a sign I should have kept names, rules, and restores much simpler from the start.

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13 April 2026
Tenant isolation failures expose financial metadata leakage

Multi-tenant data isolation failures happen when scope checks live at the presentation layer instead of the query layer. Lloyds learned this the hard way; I'll show you why it matters in your homelab too.

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7 April 2026
Stopping lateral movement in homelabs: ACLs, VLAN isolation, and process confinement

A compromised host on a flat network can reach every other node without crossing a single firewall rule. Network perimeter checks are useless if the interior is trusted by default; that is where lateral movement prevention actually matters.

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5 April 2026
Process jails and kernel isolation for untrusted agent code

Running untrusted AI agents in standard Docker containers leaves you exposed to kernel exploits that bypass every namespace and policy you've layered on top. MicroVMs add a hardware boundary that changes the threat model entirely; a container escape reaches the guest kernel, not your host or NAS.

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24 March 2026
Detecting spoofed VPN downloads: a practical approach

The trust UI lies by omission. A valid signature proves only that someone with a private key signed the file, not that the signer is the vendor you intended. Storm-2561 distributes trojanised VPN clients with legitimate signatures issued to shell companies. Four minutes of verification stops it cold.

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15 March 2026
Mitigating Win+X paste attacks with PowerShell settings

Use this blueprint to harden Windows Terminal and PowerShell, reduce exposure and detect post-compromise behaviour. You get clear settings, AppLocker and WDAC guidance, logging checks and audits you can run to implement Win+X paste attack hardening now.

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24 February 2026
Claude Code Security is useful for defenders, not a cybersecurity threat

Anthropic’s Claude Code Security has triggered the usual AI panic headlines, but the real story is simpler. Security teams are being pushed to work at the same speed as modern development, and that is overdue. This is a practical look at where the tool helps, where teams still need discipline, and why this is good for defenders.

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21 February 2026
Mitigating security risks from AI recommendation poisoning

Reduce risk from AI recommendation poisoning with practical controls you can apply to your assistant today. Log incoming AI links, block anonymous memory writes, record provenance for every memory entry, and give users a simple inspector to review and revoke saved preferences; these steps help you detect manipulation and restore reliable...

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20 February 2026
Removing compromised Outlook add-ins to protect your account

Securing Your Outlook Add-ins: Lessons from the AgreeTo Hijack A popular Outlook add-in called AgreeTo was abandoned by its developer and stayed listed in the Microsoft Marketplace. An attacker took over the unowned hosting subdomain, swapped the live content for a phishing kit that copied Microsoft sign-in pages, and harvested credentials from...

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19 February 2026
Firewall rules for model extraction attempts

Firewall rules for model extraction attempts AI models exposed over APIs get probed. A lot. Sometimes that is just noisy curiosity. Sometimes it is patterned traffic meant to map out model behaviour and pull it apart. The useful bit is not pretending a firewall solves the lot. It does not. It does cut down the […]

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17 February 2026
Training users to avoid LNK file threats

Mitigate Windows LNK file risks effectively by implementing key security measures and user training. Protect your system from shortcut vulnerabilities today.

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15 February 2026
Validating Secure Boot behaviour in Windows updates

Prepare for Patch Tuesday by testing Secure Boot behaviour and power state transitions on your hosts before a broad rollout. Use a staged pilot, keep backups, and confirm BitLocker, Hyper-V and remote access remain stable after updates; monitor for recovery prompts, driver failures and login problems.

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4 February 2026
Mitigating privilege escalation risks in Cisco Intersight

Explore the risks of privilege escalation in Cisco Intersight following CVE-2026-20092. Learn essential steps to secure your appliance and mitigate vulnerabilities effectively.

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3 February 2026
Mitigating XSS in Cisco Packaged CCE

XSS vulnerabilities in Cisco's Contact Centres pose serious risks. Understanding CVE-2026-20055 and CVE-2026-20109 is vital for prioritising effective security measures.

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1 February 2026
Mitigation strategies for SSH denial of service attacks

Secure your homelab by mitigating SSH Denial of Service risks. Discover practical steps to enhance SSH configuration and implement effective network controls today.

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31 January 2026
Ransomware lessons from the Luxshare Precision breach

The Luxshare incident highlights urgent vulnerabilities in Supply Chain Security. Learn how ransomware threats can compromise sensitive data and what actions to take now.

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28 January 2026
Securing your development environment against malware

Securing your development environment is vital. Treat every new repository as potentially dangerous. Stay vigilant against threats hidden in configuration files.

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24 January 2026
CVE-2026-20045 and what it means for Cisco UC security

I read the Cisco advisory and the public reports on CVE-2026-20045. It is a remote code execution flaw in Cisco Unified Communications products, and it is being actively exploited. The sensible response is to treat exposed UC kit as high priority while you patch. CVE-2026-20045 allows unauthenticated remote attackers to gain code execution,...

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21 January 2026
Migrating from UFW to Proxmox VE Firewall: the key steps

Proxmox VE firewall migration guide for your homelab. Remove UFW from containers before enabling the Proxmox VE firewall. Apply rules in small steps, allow SSH and web ports first, then test each change. Watch pve-firewall and container logs for leftover ufw chains. Keep a rollback plan.

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15 January 2026
Upgrading Sophos XGS126 from firmware 19.5.x to 21.5

Sophos XGS126 firmware upgrade. Follow a clear checklist. Confirm your current firmware and SSD firmware. Back up your config twice off-box. Read release notes and follow required intermediate installs. Use console access, monitor boot logs and test VLANs, VPNs and real traffic after upgrade.

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14 January 2026
Troubleshooting Sophos Home Edition firmware update errors

Facing firmware update errors on Sophos Home Edition? This guide offers practical troubleshooting steps to help you identify and fix common issues effectively.

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31 December 2025
Configuring inbound TLS/SSL inspection on Sophos XG

Configure inbound TLS/SSL inspection on Sophos XG and XGS. You will learn when to use the Sophos WAF or a reverse proxy. You will see where to bind certificates and how to map public IPs with DNAT. Validate with curl and packet capture, and apply fixes immediately.

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30 December 2025
Understanding user feedback on Sophos Firewall v22

Sophos Firewall v22 user experiences show Health Check and XDR are key. Back up your configuration, check disk space, and test XDR in a lab before you upgrade. Clean your rule base, enable two-factor authentication for admin accounts, and monitor logs after the upgrade.

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30 December 2025
Configuring firewall rules in Sophos Firewall v22

Prepare before you upgrade. Check device support and free disk space, back up configs and snapshots. Use clear rule names, narrow objects and specific service ports. Enable logging and review hit counts. Test changes with connectivity, policy and regression checks. Automate exports and rule updates via the Sophos REST API for Sophos Firewall v22...

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25 December 2025
Implementing automated updates for Next.js security

Next.js security starts with automated updates. Automate OS patches and dependency PRs for your next and Node modules. Run npm audit in CI and block merges for high-severity alerts. Monitor CPU and processes. Reduce public exposure by serving static builds or using a proxy and firewall.

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