Almost 25 years ago, I wrote a blog post with the title ‘jumping ship slowly’ about leaving Windows (XP was awful, it was mind boggling to me that Vista managed to make people nostalgic for XP). My advice remains the same:

Don’t try switching OS first. The OS is the most easily replaceable bit in the stack. Switch applications first. Most ‘Linux’ apps are cross platform. They’ll run on Windows, and the few that don’t will run in WSL2. You can switch out apps one at a time, and take the time to get comfortable with the alternatives.

Once you’re comfortable not using any Windows-only apps, changing the OS but using all of the same applications is very easy to do. Changing OS and application stack at the same time is an enormous obstacle.

I believe this is also why a lot of corporate and government Linux migrations fail: they try to change everything at the same time and that’s too steep a learning curve.

🕵🏻‍♂️ [InfoSec MASHUP] 21/2026 - The Supply Chain Didn't Break. It Was Walked.

This week's issue reads like a case study in cascade failure. A malicious VS Code extension on one #GitHub employee's device leads to 3,800 internal repositories exfiltrated — by #TeamPCP, the same group that poisoned 170 npm and #PyPI packages last week. #Grafana gets breached via a token nobody rotated after the TanStack attack, itself a TeamPCP operation. A GitHub Action used by thousands of projects gets compromised and starts exfiltrating CI/CD credentials. And somewhere in a public GitHub spreadsheet, CISA contractor credentials — including #AWS GovCloud keys — sat waiting to be found.

These aren't four separate incidents. They're one incident with four manifestations. The supply chain isn't a vector anymore; it's the terrain. Developer tooling, CI/CD pipelines, third-party actions, tokens issued and forgotten — all of it is now actively mapped and exploited with a persistence that makes the traditional "patch and move on" response look quaint. The Verizon DBIR dropped this week noting that third-party compromise is surging. The week's news was already illustrating the point before the report landed.

→ Week #21/2026 also covers: fast16 predated #Stuxnet and corrupted nuclear simulations quietly, #Pwn2Own Berlin paid $1.3M for 47 bugs, and #Bluesky got hijacked for Russian propaganda.

Full issue 👉 https://infosec-mashup.santolaria.net/p/infosec-mashup-21-2026-the-supply-chain-didn-t-break-it-was-walked

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Nix's Substituter List Is Not a Routing Table

https://notashelf.dev/posts/nix-cache-proxy

#Nix #Tech #Programming