A weekly newsletter collecting links, tutorials, and news about computer security. Brought to you by Buttondown, the easiest way to start and grow your newsletter.
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A comprehensive guide to SSL/TLS vulnerabilities and vulnerable cipher suites.
Website providing information on Snap7 open-source communication library.
Hands-on cybersecurity training and testing platform with 1800+ labs
Security cheatsheets to aid penetration testers and security enthusiasts in remembering useful but not frequently used commands.
A threat intelligence aggregation service that consolidates and summarizes security updates from multiple sources to provide comprehensive cybersecurity situational awareness.
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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.

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.