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60 posts tagged with "Cybersecurity"

Cybersecurity threats and defenses

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AMD SEV-SNP Comes to Bare Metal: What Hardware Memory Encryption Buys a Multi-Tenant Fleet That Namespaces Never Could
·Dora Noda·8 min

AMD SEV-SNP Comes to Bare Metal: What Hardware Memory Encryption Buys a Multi-Tenant Fleet That Namespaces Never Could

OVHcloud's Scale 2026 bare metal and AWS Dedicated Hosts both shipped AMD SEV-SNP in 2026, at very different prices. Here's what hardware memory encryption actually closes that container namespaces can't, what it costs in dollars and throughput, and who genuinely needs it.

self-hosting
Kubernetes
infrastructure
cybersecurity
+1
Cordyceps: How a Free GitHub Account Hijacked CI/CD at Microsoft, Google, and Cloudflare
·Dora Noda·9 min

Cordyceps: How a Free GitHub Account Hijacked CI/CD at Microsoft, Google, and Cloudflare

A researcher with a free GitHub account and no org access could hijack CI/CD at Microsoft, Google, Cloudflare, Apache, and the Python Software Foundation. Here's what the Cordyceps vulnerability class actually does, and the audit checklist to run against your own build pipeline.

security
cybersecurity
PaaS
self-hosting
Your Node Buildpack's --ignore-scripts Flag Didn't Stop Phantom Gyp
·Dora Noda·8 min

Your Node Buildpack's --ignore-scripts Flag Didn't Stop Phantom Gyp

A June 2026 npm worm called Phantom Gyp bypassed --ignore-scripts entirely by hiding in binding.gyp instead of a lifecycle script — here's the exact mechanism, why it worked, and what a git-push buildpack needs to do instead of trusting one flag.

security
cybersecurity
self-hosting
PaaS
+1
CloudNativePG's First CVE Is a 9.4: How Scraping Metrics Handed Out Postgres Superuser
·Dora Noda·10 min

CloudNativePG's First CVE Is a 9.4: How Scraping Metrics Handed Out Postgres Superuser

CloudNativePG's first-ever CVE let a low-privileged database user escalate to PostgreSQL superuser and OS command execution through the default metrics exporter — the exploit chain, the fix, and the unrelated failover bug that shipped in the same release.

cybersecurity
self-hosting
PaaS
Kubernetes
+1
Three JavaScript Quirks, One CVSS 10.0 RCE: What n8n's Sandbox-Escape Chain Means for Every Agent Tool Wired to Your Cluster
·Dora Noda·9 min

Three JavaScript Quirks, One CVSS 10.0 RCE: What n8n's Sandbox-Escape Chain Means for Every Agent Tool Wired to Your Cluster

Three individually-harmless gaps in n8n's JavaScript sandbox chained into a CVSS 10.0 RCE that reached every stored credential and, on shared instances, the Kubernetes cluster underneath. Here's the exploit chain and what it means for any tool that hands an agent a general-purpose sandbox.

cybersecurity
AI agents
Kubernetes
self-hosting
+1
npm v12 Turns Off 16 Years of Automatic Code Execution: The Exact Packages You Need to Re-Approve Before Your Build Breaks
·Dora Noda·9 min

npm v12 Turns Off 16 Years of Automatic Code Execution: The Exact Packages You Need to Re-Approve Before Your Build Breaks

npm v12 flipped install scripts, Git dependencies, and remote tarballs to off by default after a year of worm-driven supply chain attacks — here's the exact audit of which packages need re-approving and what it means for a git-push PaaS's Node buildpack.

security
self-hosting
PaaS
infrastructure
+1
Friendly Fire: The AI Security Review That Executes the Attack It's Supposed to Catch
·Dora Noda·9 min

Friendly Fire: The AI Security Review That Executes the Attack It's Supposed to Catch

AI Now Institute's Friendly Fire exploit turns Claude Code and Codex's own security reviews into remote code execution — here's how it works and what it means for scoping AI agent permissions on a deploy pipeline.

security
cybersecurity
AI agents
Model Context Protocol
+1
CVE-2026-50566: How Namespace-Scoped RBAC Became a 9.9 Node Compromise in Fission
·Dora Noda·9 min

CVE-2026-50566: How Namespace-Scoped RBAC Became a 9.9 Node Compromise in Fission

A routine namespace-scoped RBAC grant let a Fission tenant escalate to node compromise — why RBAC was never a sandbox boundary, and what it means for platforms scheduling tenant code on shared nodes.

security
infrastructure
self-hosting
cybersecurity
+1
A 'Medium' CVE Popped a Full Reverse Shell: What ms-agent's Six-Layer Regex Bypass Teaches About Agent Sandboxing
·Dora Noda·8 min

A 'Medium' CVE Popped a Full Reverse Shell: What ms-agent's Six-Layer Regex Bypass Teaches About Agent Sandboxing

CVE-2026-2256 scored a 'Medium' 6.5 on CVSS, but its proof-of-concept is a full reverse shell through an AI agent's own shell tool. Here's exactly how a six-layer regex denylist got bypassed, and why only a real sandbox boundary — not command validation — closes the gap.

AI agents
security
cybersecurity
self-hosting
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