TOP SECRET UMBRA
Substacknewsletter · by TOP SECRET UMBRA · English
- Audience
- 10K subscribers
- Shown publicly on Substack
- Publishing
- Several times a week
- 50 posts indexed in the last 90 days
- Last post
- Oct 15, 2026
- 16 days ago
- Likely audience
- Cybersecurity professionals
- Inferred from post content
Momentum
#223 on Substack's News leaderboard
From daily snapshots of Substack's public figures · how rising is measured
TOP SECRET UMBRA is a Substack newsletter by TOP SECRET UMBRA covering Cybersecurity, Geopolitics and International Relations. NewsletterFIT indexed 50 posts from it in the last 90 days, most recently on Oct 15, 2026. Shown publicly on Substack: 10K subscribers. It ranks #223 on Substack's News leaderboard.
Topics
Recent posts
- YourINT SITREP…
- YourINT SITREP…
- YourINT SITREP…
- YourINT SITREP…
- YourINT SITREP…
- YourINT SITREP…
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 TOP SECRET UMBRA
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.
Similar newsletters
Ranked by how many topics they share with TOP SECRET UMBRA.
- NextDraft102K subscribers
SubstackSeveral times a week · last post 16 days ago
Likely audience: Political analysts
4 shared topics
- Monte Mader85K subscribers
SubstackSeveral times a week · last post 18 days ago
Likely audience: Political analysts
3 shared topics
- Narativ with Zev Shalev 27K subscribers
SubstackDaily · last post 17 days ago
Likely audience: Political analysts
3 shared topics
- War Notes9K subscribers
SubstackSeveral times a week · last post 19 days ago
Likely audience: Political analysts
3 shared topics
- The Duran8K subscribers
SubstackEvery two weeks · last post 11 days ago
Likely audience: Geopolitical analysts
3 shared topics
- The Parnas Perspective901K subscribers
SubstackDaily · last post 16 days ago
Likely audience: Political analysts
2 shared topics
- The Newsroom222K subscribers
SubstackSeveral times a week · last post 16 days ago
Likely audience: General news readers
2 shared topics
- News Not Noise181K subscribers
SubstackEvery two weeks · last post 19 days ago
Likely audience: International affairs readers
2 shared topics
Compiled from public pages · refreshed Oct 15, 2026 · How NewsletterFIT collects and labels data