Top cybersecurity newsletters provide essential, up-to-date insights on threats, vulnerabilities, and industry trends. Top selections include The Hacker News, Krebs on Security, and SANS NewsBites for breaking news and analysis. Other highly recommended, specialized newsletters include tl;dr sec, Risky Business, and CyberWire Daily.

These newsletters are highly regarded for professionals looking to stay informed on the fast-changing threat landscape.

Source: Google AI Deep Dive Overview 2/23/26

The Hacker News (THN) is a leading, independent cybersecurity news platform founded in 2010 that provides in-depth reporting on hacking, vulnerabilities, data breaches, and, security trends. It serves millions of IT professionals and researchers with daily, expert-driven technical analysis and threat intelligence updates. 

Key functions and content areas of The Hacker News include:

• Latest Security News: Delivering breaking news on cyberattacks, malware, and security breaches.
• Vulnerability Reports: Providing detailed technical analysis of software bugs and vendor patches.
• Targeted Audience: Catering to infosec experts, IT professionals, researchers, and tech enthusiasts.
• Educational Focus: Offering in-depth analysis on how to stay safe online and understanding evolving threats.
• Industry Trends: Covering the latest in security tools, techniques, and AI-related threats. 

Krebs on Security is an influential, independent investigative blog founded in 2009 by former Washington Post reporter Brian Krebs. It specializes in in-depth reporting on cybercrime, data breaches, and internet security, often exposing the activities of profit-seeking criminals. 
Key details about Krebs on Security:

• Focus: The site provides daily, high-impact investigative reporting on topics such as malware, spam, fraud, and major corporate data breaches.
• Founder: Brian Krebs is a renowned security journalist who previously covered technology and security for The Washington Post from 1995 to 2009.
• Reputation:
  It is widely considered a cornerstone of cybersecurity journalism, often cited by industry professionals and law enforcement
• Impact: Krebs has famously uncovered major security breaches at companies like Target, Adobe, and Neiman Marcus.
• Audience: The site attracts a high volume of monthly visitors, including security experts, financial industry executives, and technology decision-makers.

The site also offers practical advice and tips on how to protect oneself from online threats. 

SANS NewsBites is a highly regarded, semiweekly email newsletter providing executive-level summaries of critical cybersecurity news, breaches, and threats. Curated by the SANS Institute, it offers expert-annotated analysis on why major stories matter, helping security professionals stay informed efficiently. 
Key Features of SANS NewsBites:

• Frequency: Published twice weekly, typically Tuesdays and Fridays.
• Content: Concise, high-impact summaries of the week’s most important cyber security news, including vulnerability reports, major data breaches, and regulatory changes.
• Expert Commentary: Each article includes expert context from the SANS community, providing deeper insight into the implications of the news.
• Target Audience: Security professionals, executives, and IT professionals needing quick, actionable threat intelligence.
• Credibility: Produced by the SANS Institute, a globally recognized leader in cybersecurity research and training. 

It is widely considered a top, trusted, and must-read cybersecurity resource. 

Dark Reading is a prominent, Informa TechTarget-owned digital publication and newsletter focused on enterprise cybersecurity. It provides daily/weekly updates on threats, vulnerabilities, and industry trends, serving as a trusted resource for IT security professionals, CISOs, and researchers. 
Key details about the Dark Reading newsletter include:

• Content Focus: Covers breaking news, threat intelligence, data breaches, AI, and cybersecurity operations, often featuring in-depth analysis and expert commentary.
• Target Audience: Geared toward security practitioners, technology specialists, and business decision-makers.
• Features: Provides 14+ topical sections, special reports, webinars, and virtual events.
• Background: Founded in 2006, it is recognized for high-quality, independent journalism within the IT security sector. 

You can subscribe to their newsletters through the official website. 

tl;dr sec is a popular, free weekly cybersecurity newsletter curated by Clint Gibler that summarizes the best application security (AppSec), cloud security, and actionable research. Designed for busy security professionals, it focuses on high-value, practical tools, and techniques rather than news-cycle hype, reaching over 90,000 readers. 
Key features of the newsletter include:

• Content Focus: Covers topics such as software supply chain security, AI-powered bug hunting, cloud-native detection engineering, and API security.
• Structure: Summarizes conference talks, technical blog posts, and new open-source tools to help professionals improve their workflows.
• Goal: The newsletter aims to act as a “too long; didn’t read” (TL;DR) for the security industry, highlighting essential information in a 7-minute read.
• Target Audience: Security engineers, application security specialists, and CISOs. 

The newsletter is published every Thursday and is widely regarded as a high-density, technical resource. 

Schneier on Security, or Crypto-Gram, is a free, monthly email newsletter published by renowned security expert Bruce Schneier since 1998. It provides in-depth analysis, commentary, and summaries of current computer security threats, surveillance issues, and, more recently, AI security. The newsletter acts as a curated digest of his popular blog. 
Key details about the newsletter include:

• Content: It covers a wide range of topics, including cryptography, surveillance, privacy, and cybersecurity trends, often distilling complex technical topics for a broader audience.
• Focus: While it originated in 1998, it remains highly relevant, with recent issues covering topics such as AI-driven threats, robotic vehicle security, and , online privacy.
• Format: It is a monthly newsletter distributed via email, summarizing posts from the Schneier on Security blog.
• Author: Bruce Schneier is a well-known security technologist, author, and lecturer at the Harvard Kennedy School.
• Audience: Read by over 250,000 people, it is considered a vital resource for professionals and enthusiasts interested in the intersection of technology and security. 

You can subscribe to the free newsletter on the official website. 

Risky Business News is a respected, high-quality, thrice-weekly cybersecurity newsletter curated by journalist Catalin Cimpanu. It provides concise, need-to-know, and good-to-know information for security professionals, covering cyber threats, intelligence, and vulnerabilities. It is part of the broader Risky Business Media ecosystem, founded in 2007 by Patrick Gray, which also includes podcasts and a separate policy-focused newsletter. 
Key details about the Risky Business Newsletters:

• Editor & Frequency: Written by Catalin Cimpanu and usually published on Monday, Wednesday, and Friday.
• Content Focus: Covers major cybersecurity news, breaches, threat actor activities, and vulnerability analysis.
• Sister Products:
  • Seriously Risky Business: A newsletter by Tom Uren that focuses on policy and intelligence.
  • Risky Business Podcast: A long-running weekly show hosted by Patrick Gray and Adam Boileau.
  • Risky Bulletin: Short, audio-based news updates. 

The newsletter is designed for professionals who need to stay updated on the rapidly changing cybersecurity landscape.