Browse newsletters about security

Eleatiche | Substack

by Eleatiche

Eleatiche provides strategic briefings and models for businesses and investors to navigate geopolitical shifts, AI integration, and security imperatives.

The Military Reading Room - History, Strategy, and Insight | Substack

by The Military Reading Room

Retired Marine Corps Intelligence Officers Dave Gran and Phil Gentile offer insights into military history, strategy, and current events. Expect book reviews and tech analysis.

Rogue Systems Recon | Andrew Tanner | Substack

by Andrew Tanner

Andrew Tanner analyzes global policy through a systems theory lens, focusing on the Ukraine war to identify strategic errors and inform new security institutions.

iyouport | Substack

by iyouport

IYP (est. 2014) is a Chinese-language platform run by anarchist thinkers and activists. It empowers digital users with knowledge, initiatives, and defense tactics for liberation.

PREVAIL by Greg Olear | Substack

by Greg Olear

Greg Olear’s PREVAIL delivers sharp analysis on politics, national security, and global corruption, covering the fight for democracy. Sundays feature poetry and literature.

Tom Hoefling | Substack

by Tom Hoefling

Conservative activist Tom Hoefling writes on abolishing abortion, traditional marriage, Second Amendment rights, secure borders, and American sovereignty.

The OSINT Newsletter | Substack

by The OSINT Newsletter

The OSINT Newsletter provides intelligence professionals, journalists, and enthusiasts with the latest tools, tactics, and techniques for open source intelligence (OSINT).

Black Mountain Analysis | Substack

by Black Mountain Analysis

Black Mountain Analysis provides expert geopolitical, economic, and conflict analysis from military expert Mike Mihajlovic and international project leader Aleks.

Weapons and Strategy | Stephen Bryen | Substack

by Stephen Bryen

Dr. Stephen Bryen's Weapons and Strategy offers objective, extensively researched insights on national and international security, covering critical global threats and policy.

Zero to Hoodie Substack

by BowTiedCyber

BowTiedCyber's Zero to Hoodie helps aspiring cybersecurity professionals land a job in 90 days with career roadmaps, resume templates, and practical tutorials.

Amanda & Andrea Britto

by Energia Seguros

Business insights and updates from Energia Seguros via Amanda & Andrea Britto, covering insurance and energy.

JonFleetwood.com | Jon Fleetwood | Substack

by Jon Fleetwood

Investigative reporter Jon Fleetwood delivers document-driven reports on health policy, biotech, and government decisions, using primary sources to uncover research.

Meryl’s CHAOS letter (Critical Health Analysis and OpinionS) | Meryl Nass | Substack

by Meryl Nass

Meryl Nass delivers critical health analysis and opinions to help readers understand the pandemic, the great reset, and the historical context of current events.

ASIAN SCHOLAR | Sass Rogando Sasot | Sass Rogando Sasot (教萨丝） | Substack

by Sass Rogando Sasot (教萨丝）

Sass Rogando Sasot, an international relations scholar, offers insights into the South China Sea conflict, Philippine foreign policy, and Chinese political culture.

FPRI Baltic Initiative | FPRI Eurasia Program | Substack

by FPRI Eurasia Program

The FPRI Baltic Initiative provides monthly analysis and a newsletter by Dr. Indra Ekmanis covering defense, geopolitical issues, and events in the Baltic Sea region.

ColonelRETJohn | ColonelRETJohn Mills | Substack

by ColonelRETJohn Mills

ColonelRETJohn provides unique perspectives on US national security. Written by Lt Mike Mills, it honors founder Colonel John Mills, former DoD cybersecurity director.

Sixty Degrees North

by Peter Rybski

Peter Rybski's Sixty Degrees North tracks US polar operations and policies in the High North, exploring the geopolitical significance and everyday impact of icebreakers.

Access Hub | Space & Defense Newsletter | Omkar Nikam | Substack

by Omkar Nikam

Access Hub Insights delivers strategic intelligence on defense, space, aerospace, and emerging technologies. It decodes global security news with actionable insights for industry leaders.

Defcon Level | Current Threat Monitor 2026

by Defcon Level Intelligence Team

Defcon Level offers OSINT-based threat assessments, monitoring global military readiness, nuclear, terror, geopolitical, and cyber threats since 2013.

Loud & Clear with John Kiriakou

by John Kiriakou

Get daily insights on national security, politics, and foreign affairs from John Kiriakou in Loud & Clear, featuring the 'DeProgram' series.

FAO Journal of International Affairs | Editor | Substack

by Editor

A platform for Foreign Area Officers and military professionals to publish on geo-political issues, field experiences, and career development.

Futura Doctrina | Mick Ryan | Substack

by Mick Ryan

Former Major General Mick Ryan draws on 35 years in the Australian Army and combat experience to analyze war, strategic competition, and future conflicts, including Ukraine.

CLG News – Your source for deep-state truth.

by legitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgovlegitgov

CLG News uncovers "deep-state truth" on U.S.-Israeli conflict with Iran, domestic crime, immigration, and social policy, challenging mainstream narratives.

Between Us

by Nadav Eyal

Between Us by Nadav Eyal: deeply sourced analysis and reporting on Israel and the Middle East. Essential weekly columns.

Latin America Risk Report | Boz | Substack

by Boz

Political risk analyst Boz (James Bosworth) dissects Latin American politics, economics, and security, with two decades of emerging markets expertise.

Project Save the World's Substack | Substack

by Project Save the World

Project Save the World features weekly forums and articles on global dangers (war, climate, pandemics, AI) and publishes Peace Magazine quarterly.

Post Strategy

by Judd Devermont

Judd Devermont's Post Strategy offers personal reflections on U.S. policy toward Africa, drawing on his experience as a top official under three presidents.

U.S. Department of State | StateDept | Substack

by StateDept

The official newsletter from the U.S. Department of State delivers insights, updates, and deep dives into Trump Administration foreign policy and diplomatic efforts.

Lawfare | Substack

by Lawfare

Lawfare delivers non-partisan analysis of national security law and policy through articles, daily/weekly newsletters, podcasts, and livestreams.

Overwatch with 𝗖𝗢𝗠𝗠𝗔𝗡𝗗𝗘𝗟𝗘𝗩𝗘𝗡 | 𝗖𝗢𝗠𝗠𝗔𝗡𝗗𝗘𝗟𝗘𝗩𝗘𝗡® | Substack

by 𝗖𝗢𝗠𝗠𝗔𝗡𝗗𝗘𝗟𝗘𝗩𝗘𝗡®

CommandEleven provides intelligence and consulting. It transforms conflict zone insights into actionable strategies for geopolitical and commercial domains.

Buda Péter - Idő van | Buda Peter | Substack

by Buda Peter

Buda Péter provides strategic forecasts by examining national security, applied history, mentality, and religious studies, blending past insights with self-reflection.

FPRI Insights | Substack

by FPRI

A weekly newsletter from the Foreign Policy Research Institute, FPRI Insights offers expert analysis and commentary on critical US foreign policy and global affairs.

Le Pavé numérique | Presse Non Stop | Substack

by Presse Non Stop

Le Pavé numérique delivers a weekly, independent perspective on tech and digital news, from innovations to the absurd, exploring its culture, impacts, and hidden facets.

The Monero Moon | John Foss | Substack

by John Foss

A curated weekly newsletter covering all news and updates about Monero, the world’s most private, secure, and untraceable cryptocurrency.

VDARE.com

Provides analysis and news for the movement dedicated to maintaining America's traditional cultural and national identity amidst immigration.

Need 2 Know

N2K delivers critical industry insights, strategic intelligence, and learning, helping cyber professionals and companies navigate technology and grow.

The Cyber Mentor

The Cyber Mentor, Heath, is a cybersecurity business owner & pentester. He mentors aspiring pros and helps grow the cybersecurity community.

The Record

The Record delivers exclusive cybersecurity news, covering leaders, cybercrime, nation-state ops, and technology with behind-the-scenes access.

Threatpost

Threatpost delivers independent cybersecurity news, analysis, and threat research for IT and business-security professionals via articles, videos, and podcasts.

The Hacker News

The Hacker News provides resources for cybersecurity professionals, offering guides on ZTNA, insights into AI threat landscapes, and advanced education.

TL;DR Sec

TL;DR Sec provides practical insights on modern software security, covering AI in cybersecurity, vulnerability detection, threat intelligence, and defensive strategies.

Risky.Biz

Risky.Biz, founded by Patrick Gray in 2007, is a respected cybersecurity news podcast and media outlet, engaging vendors through interviews.

From Scratch Magazine

From Scratch Magazine explores lifestyle content. Discover perspectives on starting from scratch within daily life.

AgFunder News Newsletter

AgFunderNews reports daily on global foodtech, agtech, and climate tech industries, offering deep insights and original reporting on companies, people, and technologies improving human and planetary health.

Unsupervised Learning

Explore technology, machine learning, and AI with Unsupervised Learning. Insights into algorithms and data science principles.

Crypto-Gram

Crypto-Gram delivers technology insights. Based on its name, expect coverage of cryptocurrency, blockchain, and digital innovations.

Permaculture Women Magazine

Permaculture Women Magazine offers online courses for women to create edible abundance, from growing food at home to professional ecological design.

Schneier on Security

Schneier on Security offers sharp analysis on critical cybersecurity, AI threats, geopolitics, internet censorship, and technology's impact on society.

This Week in 4n6

Weekly digest of digital forensics, incident response, threat hunting, and malware reversing news, tools, and research, curated by Phill Moore.

CloudSecList

CloudSecList delivers weekly curated news on cloud-native security trends, helping busy professionals stay informed without overwhelm.