The 50 most sponsor-active Cybersecurity newsletters, ranked by our Newsletter Leader Score.
A cybersecurity news newsletter and media publication covering breaches, vulnerabilities, malware, application security, threat intelligence, and enterprise defense. Its readership includes CISOs, security professionals, technology executiv…
A daily cybersecurity briefing focused on zero-days, ransomware campaigns, nation-state operations, phishing, and supply-chain threats. It is positioned for SOC analysts, security engineers, CISOs, and practitioners involved in security pur…
A weekly cybersecurity newsletter blending industry analysis, AI-and-security commentary, threat developments, and vendor ecosystem coverage for security leaders and practitioners.
A daily cybersecurity newsletter and digital publication delivering news, analysis, and context on breaches, vulnerabilities, cyberattacks, threats, regulation, and security strategy. Its audience includes cybersecurity executives and enter…
A weekly newsletter covering cybersecurity innovation, security products, startups, funding, M&A, threats, and industry strategy. It is aimed at security practitioners, CISOs, founders, investors, and technology decision-makers.
A weekly cybersecurity newsletter focused on the policy, intelligence, geopolitical, and strategic issues driving the information-security agenda. It is written by Tom Uren and edited by the Risky Business Media team.
A weekday cybersecurity briefing covering threats, technology, policy, research, business, education, and law. It serves security professionals, executives, and technology decision-makers globally.
CyberScoop’s daily cybersecurity newsletter from a major industry media brand, covering policy, threats, research, privacy, and enterprise security news.
Weekly, technically focused cybersecurity research newsletter summarizing security tools, vulnerabilities, talks, papers, and practical defensive techniques.
Weekly cybersecurity analysis covering application security, AI security, vulnerability management, software supply chains, leadership, and cyber-market developments. It is aimed at practitioners, engineers, CISOs, and security executives.
Daily cybersecurity briefing covering breaches, vulnerabilities, threat activity, security tools, and practical defense guidance for enterprise IT and security leaders.
An independent cybersecurity publication and curated email newsletter covering cyber risk, privacy, Internet of Things security, connected devices, critical infrastructure, and the intersection of security with business and everyday life.
A cybersecurity newsletter sent from Graham Cluley's desk, covering security news, practical advice, hints, tips, and occasional exclusive content. It reaches a global audience of security professionals and technology users.
A free weekly cybersecurity newsletter written by journalist Zack Whittaker, covering major cyber incidents, privacy and security developments, overlooked stories, and practical context with an informal editorial voice.
Weekly blockchain-security threat intelligence covering crypto incidents, exploits, vulnerabilities, malware, investigations, attack patterns, and defensive lessons for Web3 security teams.
Weekly coverage for engineers working across DevOps, cloud infrastructure, Kubernetes, AWS, platform engineering, FinOps, and cloud security. Its security content includes supply-chain attacks, cloud vulnerabilities, identity, secrets, and …
A semiweekly executive summary of important cybersecurity news, with expert context and commentary from the SANS community. It targets security leaders, practitioners, and enterprise defenders.
A weekly infosec newsletter covering cybersecurity news, vulnerabilities, threat intelligence, supply-chain attacks, AI security, and practical security commentary.
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 high-volume cybersecurity and technology newsletter associated with BleepingComputer, covering malware, ransomware, vulnerabilities, breaches, operating-system security, privacy, and cybercrime.
A weekly cybersecurity industry newsletter focused on security startups, venture capital, product strategy, go-to-market, M&A, and the business side of cybersecurity. Its audience includes security founders, investors, operators, and execut…
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 personal cybersecurity newsletter combining practical security engineering, detection, incident response, threat intelligence, cloud security, career development, and industry analysis. It serves cybersecurity professionals, learners, bui…
Weekly cloud and emerging-technology security coverage combining breach and vulnerability news with practitioner interviews and actionable guidance for modern security teams.
Weekly, hand-curated cloud-security intelligence covering research, vulnerabilities, cloud-provider updates, tooling, incidents, and practical defensive guidance.
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.
A cybersecurity news briefing published multiple times per week, covering breaches, threat actors, research, law enforcement, advanced persistent threats, and major security incidents.
Cybersecurity news and email publication for CISOs and security decision-makers across enterprise and government, operated within the TechDay network.
A weekly AI-and-cybersecurity newsletter for enterprise leaders, mixing curated cyber news, AI risk, and executive-facing security analysis.
A weekly Axios newsletter analyzing cybersecurity policy, AI-enabled threats, geopolitics, critical infrastructure, and the business implications of cyber risk.
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 practitioner newsletter curating the best detection engineering, threat detection, and blue-team research, tools, and commentary.
Weekly hand-curated coverage at the intersection of infosec, security research, AI, developer tools, productivity, and the human side of technology.
An independent cybersecurity publication and plain-text email newsletter covering cybercrime, ransomware, fraud, breaches, online abuse, and investigative security reporting. The newsletter sends story notifications when new reporting is pu…
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.
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 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.
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