issue · biweekly · est. 2026

Defending what moves inside the perimeter.

Field notes on lateral security, micro-segmentation, east-west detection, and the products shaping how we defend internal networks. Written for the security and network engineers actually configuring the distributed firewalls.

new writing on the 1st & 15th of every month

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May 1, 2026

When the Patch Window Is Thirty Days and the Change Board Meets Fridays

A messaging broker RCE hit CISA's actively-exploited list in April with a 30-day patch window. Here's what happens when you won't make it — and where vDefend virtual patching fills the gap.

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also in the archive

April 20, 2026

Ten Hours

On the shrinking gap between disclosure and exploitation — and what vDefend's April update actually means for the people running the change board.

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Defending what moves inside the perimeter.

When the Patch Window Is Thirty Days and the Change Board Meets Fridays

Ten Hours