Top 25 Cyber Security Newsletters — 2025

Periodic cyber security newsletters that capture the latest news, summaries of conference talks, research, best practices, tools, events, vulnerabilities, and analysis of trending threats and attacks

GitHub: https://github.com/TalEliyahu/awesome-security-newsletters

Niche Newsletters

• The Cloud Security Reading List — A low volume newsletter (delivered once per week) that highlights security-related news focused on the cloud native landscape, hand curated by Marco Lancini (@lancinimarco).
• API Security Newsletter — The latest API security news, vulnerabilities and best practices by @apisecurityio.
• This Week in 4n6 — A collection of everything that happens on a weekly basis in the Digital Forensics and — Incident Response community — Phill Moore (@phillmoore).
• Adversarial AI Digest — A digest of AI security research, threats, governance challenges, and best practices for securing AI systems.
• Blockchain Threat Intelligence — A weekly, independent newsletter to capture the latest security news, tools, events, vulnerabilities, and threats in the cryptocurrency landscape — Peter Kacherginsky (@_iphelix).
• AWS Security Digest — Adopt a slow-tech 🐌 approach by reading only essential info on AWS Security landscape — once a week — on Monday.
• MEM and Windows Weekly Community Newsletter — The latest Microsoft Endpoint Manager, Intune, Microsoft Endpoint Configuration Manager, Powershell, and Windows 11 news every week! Also, you will find a big selection of tools and solutions- Daniel Engberg (@danielclasson)
• Security, Funded — Get the free newsletter recapping investing in the cybersecurity and privacy space delivered weekly to your inbox — Mike Privette (@mikepsecuritee)
• RTCSec Newsletter — A free monthly newsletter bringing you commentary and news around VoIP and WebRTC security. Covers both defensive and offensive security as they relate to Real-time Communications. Prepared by Sandro Gauci (@sandrogauci).
• Politico Weekly Cybersecurity — Delivered every Monday by 10 a.m., Weekly Cybersecurity examines the latest news in cybersecurity policy and politics.
• AdvisoryWeek — A roundup of the security advisories that were published each week by major software vendors (Apple, Adobe, Microsoft, Oracle, etc.), built by Pete Freitag (@pfreitag).
• Risky.Biz — It’s your weekly digest and analysis of the big stories shaping cyber policy. Prepared by Brett Winterford (@breditor), Tom Uren (@tomatospy), and Patrick Gray (@riskybusiness).
• Last Week in AWS Security — A weekly breakdown of security news, incidents, and best practices specifically related to AWS by Corey Quinn.
• Full Disclosure Mailing List — A public, vendor-neutral forum for detailed discussion of vulnerabilities and exploitation techniques, as well as tools, papers, news, and events of interest to the community.
• Return on Security — free newsletter recapping investing in the cybersecurity and privacy space delivered weekly.

News Newsletters

• The CyberSecurity Club — Provides a short summary on all the key topics you may have missed for the week, covering threat intelligence, cybersecurity trends & insights, regulatory developments and vulnerability news.
• TLDR Information Security — A daily newsletter delivering the latest news, research, and tools.
• Vulnerable U — A weekly security newsletter “building resilience” — by Matt Johansen (@mattjay)
• Last Week in Security — A summary of the interesting cybersecurity news, techniques, tools and exploits from the previous week — Bad Sector Labs (@badsectorlabs).
• This week in security — A weekly tl;dr cybersecurity newsletter of all the major stuff you missed, but really need to know. It includes news, the happy corner, a featured cyber cat (or friend), and more. It’s sent every Sunday, and is completely free. Prepared by Zack Whittaker (@zackwhittaker).
• Hive Five Newsletter — Sharing what matters in security. Every week securibee curates InfoSec news, so you can focus on securing web apps and earning bug bounties — Pusha B (@securibee).
• tl;dr sec Newsletter — Clint Gibler (@clintgibler) covers the latest cybersecurity tools, research, and best practices.
• SANS Newsletters — SANS offers three newsletters to keep you up-to-date on the latest cybersecurity news, cyber attacks and vulnerabilities, and security awareness tips and stories.
• Unsupervised Learning Community — Daniel spends 20+ hours a week consuming content, and every Monday morning he sends a summary of the most important stories — Daniel Miessler (@DanielMiessler)
• IT Security Weekend Catch Up — Every week BadCyber (@badcybercom) put together a curated list of all important security news in one place.

Bonus: Twitter Subscriptions (Lists)

• Red Team — Get the latest tweets from red team professionals — https://www.twitter.com/i/lists/1270700272285696001
• CERTs — Get the latest tweets from computer emergency response teams — https://twitter.com/i/lists/1267657323494797312
• Vendor Research Labs — Get the latest updates about security research papers published by cyber security labs and research departments — https://twitter.com/i/lists/1267499126024888320
• Phishing & Botnet Hunters — https://twitter.com/i/lists/1267713842613637121
• OWASP Projects — Get the latest updates about OWASP projects — https://twitter.com/i/lists/1267635551168892928
• Test Security Labs — https://twitter.com/i/lists/1274234475547750400
• Pentest Tools — https://twitter.com/i/lists/1269682302939848705
• Malware Hunters — https://twitter.com/i/lists/1269537848266383362