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
Introductory book about cryptography with instructions for building and translating.
A guide on how to contribute to the Ayehu Custom Activities Repository
ENISA Training Resources offers online training material for cybersecurity specialists, covering technical areas such as artefact handling and analysis.
A repository of cybersecurity conference presentation slides from Black Hat, Offensivecon, and REcon.
The SOC Academy offers official VirusTotal certification courses to help cybersecurity professionals maximize its functionalities and advance their careers.
PINNED

InfoSecHired
An AI-powered career platform that automates the creation of cybersecurity job application materials and provides company-specific insights for job seekers.

Mandos Brief Newsletter
A weekly newsletter providing cybersecurity leadership insights, industry updates, and strategic guidance for security professionals advancing to management positions.

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.