The 50 most sponsor-active Cybersecurity newsletters, ranked by our Newsletter Leader Score.
A large global cybersecurity publication with email and LinkedIn newsletter distribution covering breaking threats, vulnerabilities, and practical security news.
A daily threat-intelligence newsletter for practitioners, focused on actionable cyber intel, zero-days, ransomware, and detection guidance.
A weekly cybersecurity newsletter blending industry analysis, AI-and-security commentary, threat developments, and vendor ecosystem coverage for security leaders and practitioners.
Weekly cybersecurity market newsletter covering security startups, product launches, funding, and industry trends for operators, vendors, and investors. Its positioning is explicitly toward Fortune 500 CISOs, vendors, and investors.
CyberScoop’s daily cybersecurity newsletter from a major industry media brand, covering policy, threats, research, privacy, and enterprise security news.
Weekly cybersecurity research newsletter curating high-signal tools, talks, papers, and practitioner resources across appsec, cloud, blue team, and AI security.
High-frequency cybersecurity news briefing from Risky Business covering breaches, threat actors, APTs, law enforcement, and vulnerabilities. Sponsor mentions appear directly in recent newsletter issues.
Long-running cybersecurity email newsletter from independent security author Graham Cluley, covering security news, privacy, and practical advice for IT professionals and general readers.
Daily business-journalism newsletter covering cybersecurity strategy, regulation, breaches, vulnerabilities, and industry developments for decision-makers.
Weekly cybersecurity newsletter by journalist Zack Whittaker with analysis and exclusive reporting. It is actively marketed to sponsors through a current media-kit/profile page.
A long-running independent newsletter covering cybersecurity, national security, AI, technology, and culture, with frequent security-focused issues and a clear sponsorship program.
A cybersecurity media newsletter tied to the CISO Series ecosystem, covering security operations, leadership, and adjacent programming. It explicitly sells sponsorships and points advertisers to David Spark.
A curated cybersecurity email newsletter from The Security Ledger covering enterprise security, privacy, data protection, and IoT-related security issues. The publication actively offers newsletter sponsorships and related underwriting oppo…
A cybersecurity-focused newsletter by Sean Martin exploring the intersection of cybersecurity, technology, and humanity. It sits within the broader ITSPmagazine ecosystem and is packaged alongside sponsor-ready media offerings.
A flagship cybersecurity news briefing delivering daily intelligence for security professionals. It sits inside N2K CyberWire's broader briefing portfolio and is marketed as part of a large sponsor-supported network.
Weekly cybersecurity career and industry newsletter aimed at helping readers level up skills, break into the field, and stay current on news. It mixes job-market guidance, training resources, and topical cyber updates.
Cybersecurity news and email publication for CISOs and security decision-makers across enterprise and government, operated within the TechDay network.
A semiweekly executive cybersecurity briefing from SANS covering major security headlines for practitioners and decision-makers.
A weekly AI-and-cybersecurity newsletter for enterprise leaders, mixing curated cyber news, AI risk, and executive-facing security analysis.
A weekly briefing on the cybersecurity market, covering funding, M&A, category shifts, and industry economics for operators, founders, investors, and security leaders.
A weekly cybersecurity newsletter and analysis platform covering AppSec, AI security, software supply chain, and security leadership for the practitioner community.
A weekly practitioner newsletter curating the best detection engineering, threat detection, and blue-team research, tools, and commentary.
A weekly Axios newsletter focused on cybersecurity policy, industry, and national-security developments. It is written by Axios reporter Sam Sabin and distributed as part of Axios' newsletter portfolio.
Cybersecurity newsletter from Intruvent Technologies with threat-intelligence roundups and plain-language 'Prevent This' explainers for security leaders and general readers. It covers active threats, ransomware, and defensive actions.
Cybersecurity industry analysis newsletter focused on security markets, startups, product strategy, and business models. It is widely read by founders, investors, and operators in security.
A cybersecurity and tech newsletter/publication covering cyber incidents, AI security, and innovation. It has an active sponsorship/media-kit footprint and frequent recent publication activity.
Cybersecurity education and industry newsletter run by MCSI, with a substantial subscriber base centered on cyber training and professional development.
A cloud-security-focused email publication covering weekly cloud and emerging-tech security incidents, with practitioner commentary and expert interviews.
A Substack newsletter on cybersecurity, technology, and digital privacy, with weekly issues and occasional deep-dive reports. It is tied to the Core Sentinel security brand and positioned as an ongoing email publication.
A weekly executive cyber briefing that translates threat signals, AI risk, and cyber strategy into decision-ready guidance for leaders and practitioners.
Email companion to the Shared Security cybersecurity and privacy publication, delivering concise issue summaries and commentary on current security and privacy developments.
Independent Substack by Frank Wang offering opinionated analysis on cybersecurity, security engineering, AI security, and security markets. It publishes roughly 1-2 times per week and is reader-supported rather than clearly sponsor-driven.
Cybersecurity and AI governance newsletter focused on enterprise security, identity, agent security, and strategic analysis for security leaders. It publishes deep-dive essays rather than pure news aggregation.
A new independent Substack cybersecurity publication focused on practitioner-friendly security education, threat intelligence, and open-source tooling.
Security newsletter at the intersection of offensive security and security strategy, authored by Jason Haddix with a practitioner-operator angle.
StackAware's newsletter/blog covering cybersecurity, compliance, privacy, and AI risk management. It is aimed at practitioners managing secure deployment and governance of AI-enabled systems.
Weekly cyber news roundup focused on breaches, vulnerabilities, threat intelligence, cyber risk, and regulatory developments.
Weekly cybersecurity publication for professionals and decision-makers, covering trends, best practices, and digital security developments.
Bruce Schneier’s long-running monthly email digest of security, cryptography, privacy, and policy writing from Schneier on Security. It remains active and widely read across the cybersecurity community.
A weekly Substack focused on cybercrime investigations, cybersecurity, fraud, and tactical threat intelligence, especially at the cyber-financial crime intersection.
A global B2B technology publication with cybersecurity as a core coverage area and a large opted-in newsletter audience. The site presents itself as a media and advertising vehicle for tech leaders, including cybersecurity decision-makers.
A weekly digital forensics and incident response newsletter aggregating news, tool releases, research, and malware-reversing resources for the DFIR community. It sells one clearly marked sponsor slot per week.
An independent Substack publishing breach analysis, cybersecurity market trends, enterprise security trends, and vulnerability-management research.
A Ghost-hosted digital-security newsletter with practical commentary on digital security and cybersecurity, especially for at-risk groups and those who support them.
Established cybersecurity publication newsletter covering news, analysis, interviews, and industry insights for security professionals. The site offers multiple email products including a weekly flagship newsletter.
Independent cybersecurity newsletter focused on cybersecurity engineering, career growth, and practical reflections from a working security engineer. It also packages partner opportunities across newsletter, YouTube, Discord, and podcast ch…
A strategy-oriented cybersecurity newsletter from veteran security executive Rick Howard, focused on first-principles thinking for security programs.
Cybersecurity newsletter tied to the Phillip Wylie Show, focused on offensive security, pentesting, hacker events, and practitioner resources.
Recorded Future News' daily cybersecurity digest covering breaches, ransomware, geopolitics, and intelligence-driven news. It is attached to a large cyber media brand read by hundreds of thousands monthly.
A cybersecurity email publication covering incident response, threat activity, and executive risk briefs. Recent issues include recurring formats like Market & Momentum, Fail-Safe Friday, and Wednesday War Room.
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