Curated and original email newsletters covering threat intelligence, detection engineering, cloud and application security, GRC, and the business of cybersecurity. Each entry is a recurring, reputable newsletter with a consistent publishing cadence.
Security Newsletters 18
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San Francisco, USA
The Deepak Gupta newsletter publishes at guptadeepak.com on cybersecurity, identity and access management, LLM and AI security, and B2B SaaS growth, written for security and marketing practitioners scaling companies.
San Francisco, USA
Unsupervised Learning is Daniel Miessler's widely read newsletter and podcast curating the most important stories at the intersection of cybersecurity, AI, national security, technology, and society.
Calgary, Canada
Venture in Security is one of the most widely read Substacks on the business of cybersecurity, covering go-to-market, product, investing, and how the security industry actually works.
Online
Return on Security is a weekly newsletter by Mike Privette covering cybersecurity and privacy funding, M&A, and the economics of the security market.
Online
Detection Engineering Weekly curates the most relevant research, tooling, and techniques for detection engineering, threat detection, and blue-team practitioners.
London, UK
CloudSecList (The Cloud Security Reading List) is a weekly newsletter by Marco Lancini curating the best cloud-native security news, research, and tooling.
San Francisco, USA
TLDR Information Security is a daily newsletter delivering the most important cybersecurity news, research, and tools in a quick, scannable format to a large practitioner audience.
New York, USA
This Week in Security (~this week in security~) is a long-running weekly newsletter by journalist Zack Whittaker summarizing the most important cybersecurity stories with a reporter's perspective.
Austin, USA
Vulnerable U is a weekly newsletter by Matt Johansen blending cybersecurity news and analysis with a focus on the human side of security and personal resilience.
Online
The API Security Newsletter (apisecurity.io) curates the latest API security breaches, vulnerabilities, standards, and best practices for developers and security teams.
Online
BlockThreat (Blockchain Threat Intelligence) is a newsletter by Peter Kacherginsky covering cryptocurrency and Web3 security incidents, exploits, vulnerabilities, and defensive research.
Rockville, USA
SANS NewsBites is a semiweekly newsletter from the SANS Institute summarizing the most important cybersecurity news, with expert commentary from SANS instructors and fellows.
Online
GRC Engineer is a newsletter by Ayoub Fandi focused on modern, engineering-driven approaches to security governance, risk, and compliance.
Tel Aviv, Israel
Infostealers by Hudson Rock publishes news, research, and reporting on infostealer malware and the credential-theft economy that fuels many modern breaches.
Online
Hive Five by securibee (Pusha B) is a weekly newsletter delivering a curated set of the most useful infosec news, web application security, and bug bounty resources.
Online
This Week in 4n6 is a weekly roundup by Phill Moore covering the latest in digital forensics and incident response (DFIR): research, tools, and blog posts from across the community.
Online, USA
Metacurity is a daily free newsletter curated by veteran technology analyst and author Cynthia Brumfield, who scans thousands of sources to summarize the day's most important infosec developments, with paid tiers offering original reporting and archives.
Online, USA
The Cyber Why is a weekly Substack newsletter by Tyler Shields, a fractional CMO and former VP of Product Marketing at Traceable, covering cybersecurity news, market structure, M&A, and investing for CISOs, practitioners, founders, and investors.
FAQs
It depends on your focus. For curated industry news, tl;dr sec, TLDR Information Security, and Unsupervised Learning are widely read. For detection engineering, Detection Engineering Weekly. For the business of security, Venture in Security and Return on Security.
We list newsletters with a consistent publishing cadence, a clear editorial point of view, and a real practitioner or operator audience, spanning threat intel, cloud and app security, GRC, DFIR, and security go-to-market.
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