Professor Messer IT Certification Training
Professor Messer offers IT certification training for CompTIA A+, Network+, and Security+ exams, including free videos, course notes, practice exams, downloadable videos, pop quizzes, study group replays, and study recommendations.
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Introductory book about cryptography with instructions for building and translating.
Interactive challenges demonstrating attacks on real-world cryptography.
A live archive of DEF CON CTF challenges, vulnerable by design, for hackers to play safely.
A comprehensive guide to investigating security incidents in popular cloud platforms, covering essential tools, logs, and techniques for cloud investigation and incident response.
A comprehensive educational resource that provides structured guidance on penetration testing methodology, tools, and techniques organized around the penetration testing attack chain.
The best security training environment for Developers and AppSec Professionals.
A threat intelligence aggregation service that consolidates and summarizes security updates from multiple sources to provide comprehensive cybersecurity situational awareness.
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Mandos Brief Newsletter
A weekly newsletter providing cybersecurity leadership insights, industry updates, and strategic guidance for security professionals advancing to management positions.
PTJunior
An AI-powered penetration testing platform that autonomously discovers, exploits, and documents vulnerabilities while generating NIST-compliant reports.
CTIChef.com Detection Feeds
A tiered cyber threat intelligence service providing detection rules from public repositories with varying levels of analysis, processing, and guidance for security teams.
OSINTLeak
OSINTLeak is a tool for discovering and analyzing leaked sensitive information across various online sources to identify potential security risks.
ImmuniWeb® Discovery
ImmuniWeb Discovery is an attack surface management platform that continuously monitors an organization's external digital assets for security vulnerabilities, misconfigurations, and threats across domains, applications, cloud resources, and the dark web.
Checkmarx SCA
A software composition analysis tool that identifies vulnerabilities, malicious code, and license risks in open source dependencies throughout the software development lifecycle.
Orca Security
A cloud-native application protection platform that provides agentless security monitoring, vulnerability management, and compliance capabilities across multi-cloud environments.
DryRun
A GitHub application that performs automated security code reviews by analyzing contextual security aspects of code changes during pull requests.