SANS Cyber Aces provides free cyber security training and resources, including course demos, certifications, and training events, to help individuals develop their cyber security skills and advance their careers.
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Online IT Security and Privacy Awareness training courses to help companies meet compliance requirements and reduce cybersecurity risks.
A knowledge base of analytics developed by MITRE based on the MITRE ATT&CK adversary model.
A comprehensive guide to Nessus, a vulnerability scanner, covering data directories, binary directories, logs directories, plugin directories, advanced settings, API, and good practices.
Collection of recent infosec/hacking videos from conferences.
A collection of security vulnerabilities in regular expressions used in WAFs with a focus on bypass examples and high severity issues.
A live archive of DEF CON CTF challenges, vulnerable by design, for hackers to play safely.
A vulnerable web application for learning about web application vulnerabilities and writing secure code.
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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.