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Top Cybersecurity Newsletters

1. The Hacker News: Covers daily breaking news, vulnerabilities, and cyberattacks.
2. Krebs on Security: In-depth investigative journalism from Brian Krebs.
3. SANS NewsBites: A weekly, high-quality curated summary of security news with expert commentary.
4. Dark Reading: Covers a wide range of enterprise security topics.
5. tl;dr sec: Curated weekly insights on application security, engineering, and actionable, free resources.
6. Schneier on Security: Expert analysis from renowned security professional Bruce Schneier.
7. Risky Business: A popular, in-depth weekly news briefing for security professionals.
8. CyberWire Daily: Comprehensive daily briefings covering industry, government, and technical news.
9. BleepingComputer: Real-time news on ransomware, data breaches, and malware.
10. Unsupervised Learning: A curated newsletter by Daniel Miessler focusing on security, AI, and technology.

Source: AI Overview 2/9/2026

Top 10 Cybersecurity Substacks

Top cybersecurity Substacks provide in-depth analysis, industry trends, and technical insights from expert practitioners. Top, highly recommended, and frequently cited newsletters include Venture in Security (Ross Haleliuk), tl;dr sec (Clint Gibler), Aphinia (Misha Sobolev), Resilient Cyber, and The Cloud Security Guy, covering topics from CISO insights to AI and app security.

Why These Substack Newsletters?

• Actionable Advice: Many, like Resilient Cyber and Securely Built, offer practical tips for implementing security.
• In-depth Analysis: Unlike daily news alerts, these provide detailed, expert viewpoints on why a development matters.
• Focused Niches: Readers can choose specialized content, such as cloud (Cloud Security Guy) or, market analysis (Venture in Security). 

Top Industry & Technical Analysis

• Venture in Security (Ross Haleliuk): Focuses on the business side of cybersecurity, including market trends, startups, venture capital, and strategy.
• Resilient Cyber (Chris Hughes): Covers cloud security, DevSecOps, and software supply chain security with a practitioner’s perspective.
• Unsupervised Learning (Daniel Miessler): A popular, long-running newsletter exploring the intersection of security, AI, and technology trends.
• The Cybersecurity Pulse (Darwin Salazar): Offers comprehensive, high-quality analysis of industry developments, often featuring interviews with security leaders.
• Detection at Scale (Jack Naglieri): Dedicated to SIEM, detection engineering, and building security tools.
• The Cyber Why (Daniel Kelley): Focuses on the “why” behind security trends and industry news. 

Specialized & Niche Focus

• CISO Tradecraft (James Azar): Provides, actionable advice for security leaders (CISOs) on leadership, strategy, and risk.
• Latio Pulse (James Berthoty): Offers a no-BS, deep-dive approach to cloud, application, and product security.
• Ransomware (Allan Liska): Focused specifically on tracking and analyzing ransomware trends.
• Blockchain Threat Intelligence (Peter Kacherginsky): Covers security, vulnerabilities, and hacks within the cryptocurrency and DeFi space.
• The Cloud Security Guy (Taimur Ijlal): Focuses on cloud security, career advice, and AI risks. 

Beginner & Career-Focused

• Breaking Into Cybersecurity: Provides step-by-step guides, resume templates, and advice for those transitioning into the industry.
• SOC Analyst Diary: Documents the daily experience, tools, and alerts managed by entry-level security analysts.
• Security Concepts in Plain English: Breaks down complex security terms and concepts for beginners. 

Top Industry Reports/Newsletters (Often Cross-Posted to Substack) 

• SANS NewsBites: A curated, twice-weekly, expert-commentary summary of key security news.
• Krebs on Security: In-depth investigative journalism from Brian Krebs.
• Tl;dr Sec (Clint Gibler): A very popular weekly summary of top security tools, blog posts, and research.

Source: Google AI Overview. 2/23/26

Top Cybersecurity Newsletters on Ghost

Top cybersecurity newsletters hosted on the Ghost platform provide focused, high-quality insights for industry professionals, with standout options including Risky Business for in-depth, opinionated commentary and specialized, technical insights from GitGuardian on DevSecOps. These newsletters offer reliable, curated, and timely security news directly to your inbox.

Top Cybersecurity Newsletters on Ghost

• Risky Business: Known for providing a sharp, critical, and comprehensive analysis of current security trends and incidents.
• GitGuardian: Focuses heavily on code security, secrets management, and DevSecOps, making it essential for developers and security engineers.
• Unsupervised Learning: A highly regarded newsletter by Daniel Miessler that examines the intersection of security and AI, delivering original analysis and trends.
• Cloudflare: Provides technical, in-depth insights into building better internet infrastructure and emerging web security technologies.
• Decentralized Identity Foundation: Covers technical developments in identity management, a critical, evolving area of cybersecurity. 

These newsletters are highly ranked for their focus on technical, actionable content rather than generic headlines. 

Source: Google AI Overview. 2/23/26

Top Cybersecurity Newsletters on Beehiiv

Several top-tier cybersecurity newsletters are hosted on the beehiiv platform, offering curated threat intelligence, industry news, and actionable security advice for professionals, from CISOs to ethical hackers. 
Here are some of the top cybersecurity newsletters on beehiiv:

1. tl;dr sec 

• Focus: Highly curated, actionable security information.
• Best For: Busy security professionals (CISOs, engineers) looking for the best tools, talks, and techniques.
• Description: Clint Gibler, a respected security researcher, reads hundreds of articles and curates the top 10-15 most important ones, delivering concise summaries (7-minute read) every Thursday. 

2. Simply Cyber

• Focus: Daily, high-level cybersecurity news and industry trends.
• Best For: Daily, quick-scan industry updates for professionals looking to “crush their week”.
• Description: Offers in-depth analysis on cybersecurity news, including threat intelligence, vulnerabilities, and career advice. 

3. The Cybersecurity Club Newsletter

• Focus: Comprehensive weekly roundup of data breaches, vulnerabilities, and cyber risks.
• Best For: Staying updated on global threat intelligence and regulatory changes.
• Description: Written by “infosecfox,” it provides in-depth insights into major incidents, such as supply chain attacks and data breaches, typically delivered as a 10-15 minute read. 

4. Unsupervised Learning

• Focus: Security, AI, and human-centric tech analysis.
• Best For: Individuals looking to understand not just what is happening, but why it matters and how to respond.
• Description: Written by Daniel Miessler, this covers information security, AI trends, and the future of technology. 

5. OWASP Gen AI Security Project 

• Focus: Artificial Intelligence security, specifically LLM (Large Language Model) applications.
• Best For: Developers, security engineers, and AI researchers interested in AI-driven attack vectors and defenses.
• Description: Provides monthly updates on the Top 10 LLM applications, keeping users updated on the latest GenAI security threats. 

Why These Newsletters Succeed on Beehiiv
These newsletters utilize beehiiv’s platform for its robust analytics, segmentation, and growth tools, often reaching thousands of professionals at top companies like Google, Microsoft, and AWS. They are popular because they offer, high-quality, curated, and consistent content, helping professionals keep up with rapidly changing threats in 2026.

Source: Google AI Overview. 2/23/26

Top Cybersecurity Newsletters on Wordpress

Top cybersecurity newsletters often leverage WordPress for content delivery, providing in-depth analysis, breach alerts, and industry news. Top choices include The Hacker News (125k+ subscribers), Cybersecurity Essentials (87k+), and CertMike. Other highly-regarded, frequently updated options often powered by CMS platforms like WordPress include TLDR Information Security, Group-IB Cybersecurity Digest, and SecurityWeek Email Briefing.
Top Cybersecurity Newsletters (WordPress-Compatible/Hosted)

• The Hacker News: A leading source for IT professionals, offering daily news on vulnerabilities, data breaches, and cyberattacks.
• Cybersecurity Essentials (via Paved): A curated weekly, AI-driven newsletter for C-level to technical staff.
• Group-IB Cybersecurity Digest: Weekly threat intelligence and actionable insights from experts.
• TLDR Information Security: A concise daily summary of the latest security tools, research, and news.
• SANS NewsBites: A highly trusted, twice-weekly summary of key security events with expert analysis.
• SecurityWeek Email Briefing: Covers industry trends, insights, and expert columns.
• Krebs on Security: In-depth investigative reporting on cybercrime.
• The CyberWire: Daily, concise briefings on industry developments.

These newsletters are ideal for staying updated on emerging threats, compliance, and industry news.

Source: Google AI Overview. 2/23/26

Web Links

• Top Substacks- Reversing Labs
• Top Substacks- Cyber Why
• Top Substacks- Venture in Security
• The Hacker News
• TL;DR SEC
• KrebsOnSecurity
• Schneier on Security
• tl;dr sec:
• SANS NewsBites
• Risky Business
• Dark Reading

Investigative & Breaking News

• Krebs on Security: Still the gold standard for investigative reporting on data breaches and cybercrime syndicates.
• The Hacker News: Essential daily updates on zero-day exploits, malware analysis, and global cybercrime trends.
• Dark Reading: Provides deep technical analysis for security professionals, covering 13 distinct security communities.
• BleepingComputer: A critical resource for real-time tracking of ransomware attacks and software vulnerabilities.
• The Record by Recorded Future: High-quality reporting on the intersection of cybersecurity, geopolitics, and national security. 

Condensed & Executive Summaries

• TL;DR Security: A massive time-saver that condenses news from over 100 sources into actionable three-sentence summaries.
• SANS NewsBites: A semi-weekly executive summary of the week’s most important news, annotated by SANS experts.
• SecurityWeek Daily Briefing: Concise daily summaries of global threats, ideal for busy CISOs and IT managers.
• The CyberWire Daily: Offers a sophisticated look at the “business of cyber” and state-sponsored activity.
• Unsupervised Learning: Daniel Miessler’s weekly newsletter focusing on the intersection of security, technology, and AI. 

More Types of Newsletters

Expert Analysis & Industry Trends

• Schneier on Security: Bruce Schneier’s monthly “Crypto-Gram” provides deep philosophical and practical insights into privacy and security.
• Risky Biz: Known for its weekly news digest and high-level commentary on the cybercriminal economy.
• Graham Cluley: A mix of breach stories and security awareness for both technical and non-technical audiences.
• Infosecurity Magazine: Award-winning strategic analysis and global security trend coverage.
• SC Media: Focuses heavily on executive-level security, regulatory shifts, and policy.

Niche & Technical Focus

• SANS @RISK: A weekly digest of newly discovered attack vectors and active exploits with code snippets for mitigation.
• Non-Human Identity Management: A specialized 2026-relevant newsletter focusing on securing machine identities, API keys, and service accounts.
• Cloud Security Reading List: A low-volume, high-value weekly list dedicated purely to cloud-native security.
• HackRead: Technical analysis of hacker tactics and dark web marketplace trends, perfect for penetration testers.
• CyberScoop: Excellent for public sector teams, providing news on government threat reports and federal policy.