Leif’s Substack
Substacknewsletter · by Leif · English
I write about topics in software engineering management and information security.
- Audience
- Not shown publicly
- We show a dash rather than guess
- Publishing
- Monthly or less
- 2 posts indexed in the last 90 days
- Last post
- Sep 8, 2026
- 52 days ago
- Likely audience
- Security engineers
- Inferred from post content
Leif’s Substack is a Substack newsletter by Leif covering Security Engineering, Supply Chain Security and Dependency Cooldowns. NewsletterFIT indexed 2 posts from it in the last 90 days, most recently on Sep 8, 2026.
Topics
- Security Engineering
- Supply Chain Security
- Dependency Cooldowns
- uv Package Manager
- Python Development
Recent posts
- Feeling the…
- Speedrunning SHA…
- Tracking Meaningful…
- Shifting Engineering…
- How we…
Sponsors detected
No sponsored posts detected in the last 180 days of indexed posts.
Detected automatically from posts marked as sponsored. Detection can miss or misread placements.
See the full picture on Leif’s Substack
Subscriber momentum over time, every detected sponsor with the source post, companies and people it mentions, guests, and an alert when any of it changes.
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Compiled from public pages · refreshed Oct 20, 2026 · How NewsletterFIT collects and labels data