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Cyber Defence Analysis for Blue & Purple Teams

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Summarised cyber defence technical content to help operational blue and purple teams be informed and protect their estates. By Ollie · Over 7,000 subscribers Subscribe No thanks By registering you agree to Substack's Terms of Service, our Privacy Policy, and our Information Collection Notice This site requires JavaScript to run correctly. Please turn on JavaScript or unblock scripts

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A live archive of DEF CON CTF challenges, vulnerable by design, for hackers to play safely.

Archive of information, tools, and references regarding CTF competitions.

A collection of CTF write-ups using pwntools

One of the oldest hacker conventions in America, offering a unique and personal experience.

Comprehensive endpoint protection platform providing unified visibility and security for cloud workloads, endpoints, and containers.

A comprehensive guide to understanding and responding to modern ransomware attacks, covering incident response, cyber threat intelligence, and forensic analysis.

A collection of security vulnerabilities in regular expressions used in WAFs with a focus on bypass examples and high severity issues.

A wargame that challenges your hacking skills

PINNED

InfoSecHired Logo

InfoSecHired

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

Resources
Mandos Brief Newsletter Logo

Mandos Brief Newsletter

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

Resources
CTIChef.com Detection Feeds Logo

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.

Threat Management
OSINTLeak Logo

OSINTLeak

OSINTLeak is a tool for discovering and analyzing leaked sensitive information across various online sources to identify potential security risks.

Digital Forensics
ImmuniWeb® Discovery Logo

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.

Attack Surface Management
Checkmarx SCA Logo

Checkmarx SCA

A software composition analysis tool that identifies vulnerabilities, malicious code, and license risks in open source dependencies throughout the software development lifecycle.

Application Security
Orca Security Logo

Orca Security

A cloud-native application protection platform that provides agentless security monitoring, vulnerability management, and compliance capabilities across multi-cloud environments.

Cloud Security
DryRun Logo

DryRun

A GitHub application that performs automated security code reviews by analyzing contextual security aspects of code changes during pull requests.

Application Security