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.
FEATURES
ALTERNATIVES
Best practices for corporate network segmentation to protect against basic targeted attacks
A guide outlining security considerations for using OpenLDAP Software, including selective listening and IP firewall capabilities.
An intentionally insecure Android app designed to teach developers and security professionals about common app vulnerabilities.
Guidelines for contributing to a cybersecurity tools and resources list
A comprehensive guide for using Docker with detailed information on prerequisites, installation, containers, images, networks, and more.
Find books at your favorite store and stay updated on new features with Universal Book Links.
A detailed manual for cybersecurity professionals focusing on red team, OSINT, and blue team strategies.
PINNED
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.
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.