Short alerts that relay government security notices and travel advisories, such as U.S. Embassy alerts and State Department advisory changes, for specific countries. Readers get quick, factual updates on unrest, crime and travel risk around the world.
Website: https://www.defconalerts.com
A crypto news briefing that explains the day's most consequential stories, covering markets, regulation, security and protocol changes, with notes on what to watch next. Each issue includes sourced figures, dates and caveats on what remains unconfirmed.
A Substack covering European politics, migration, security and economics through a weekly news round-up and longer opinionated analyses. Readers get a strongly argued, right-leaning critical perspective on Western European governance alongside some explanatory reporting.
A system design newsletter that explains architecture and engineering concepts, such as NGINX as a traffic boundary and how Slack built a multi-agent security investigator, in accessible prose. Issues also carry sponsored sections from vendors like Atlassian, Oracle and MongoDB.
A weekly-style engineering digest that breaks down how large tech companies solve scaling and infrastructure problems, such as LinkedIn's GPU memory savings, Tinder's microservice security, and DoorDash's Redis read performance. Each issue explains the problem context, the approach the team took, and the basic concepts needed to follow it.
One short email a week with hand-picked newsletters from the index. Free, no spam, unsubscribe anytime.
