Network Security

Security Notices
Palo Alto Adds Prisma Cloud and SCM to Brotli Remediation

Palo Alto adds Prisma Cloud and SCM to remediated Brotli services. Recheck PAN-OS scope, patch client software, validate controls, and retain evidence.

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AI
Is Your Self-Hosted AI Actually Private? Audit Every Data Path

A practical audit for local AI prompts, cloud model selection, web and vision sidecars, exposed APIs, logs, and backups before sensitive data enters the system.

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Network Security
Can Fiber Internet Be Wiretapped? What the 2026 GPON Research Proves

A detailed, evidence-backed explanation of the 2026 gpwn research: how shared GPON downstreams work, what the researchers demonstrated, what remains unproven, and what subscribers and ISPs should do.

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Networking
Guest Wi-Fi vs IoT VLAN: Isolation Without Breaking Everything

Use guest Wi-Fi for visitors and an IoT VLAN for explicit device rules, then test allowed and denied IPv4 and IPv6 paths; neither label proves isolation.

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AI
Cisco Catalyst C9550 vs C9350: Choose the Right Campus Role

Map C9350 access requirements and an incumbent C9500 design to a C9550 model, then verify software, optics, licensing, failure tests, and rollback before migration.

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Cisco
Cisco Live 2026 Lab Build: A Small-Scale Reference Architecture

Plan an isolated lab for segmentation, branch routing, private-app access, telemetry, and governed changes, with failure and rollback exercises; this is a proposed build, not reported test results.

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AI
Branch Network Design for the AI Era

AI-era branch design needs SD-WAN, SSE, secure access, local resilience, application steering, Wi-Fi capacity, segmentation, and experience telemetry.

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Cisco
A Practical Post-Quantum Readiness Checklist for Network Teams

A practical checklist for network teams preparing for post-quantum cryptography: inventory, risk ranking, platform support, certificates, VPNs, secure boot, and refresh planning.

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Cisco
Resilience Planning for Cisco Networks: Patch, Shield, Replace, or Segment

A practical resilience model for Cisco networks should classify each exposure into patch, shield, replace, or segment, with owners, deadlines, and evidence.

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Cisco
Cisco SD-WAN to Multicloud Fabric: A Migration Design

A phased migration from SD-WAN and native cloud networking to Cisco Multicloud Fabric should start with inventory, routing domains, security policy, pilot paths, and measurable experience.

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