MUlliNER.ORG/NET/DE is a personal website of Collin R. Mulliner focusing on security research and various mobile platforms such as Android, iPhone, and Symbian OS. The website contains a collection of blog posts, projects, and events related to cybersecurity.
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A collection of writeups of CTF challenges I solved, including explanations of the challenges and how I solved them.
A book that helps improve Docker security by covering risks and countermeasures
A lab designed for defenders to quickly build a Windows domain pre-loaded with security tooling and best practices in system logging configurations.
HxD is a freeware hex editor and disk editor with advanced features for editing files, memory, and disks.
Non-profit organization supporting the advancement of open source software.
A sample security dataset and CTF platform for information security professionals, researchers, students, and enthusiasts.
A comprehensive platform for software developers to learn, create, and optimize applications for Arm-based processors
A library for validating and accessing environment variables in Node.js programs
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Mandos
Fractional CISO service that helps B2B companies implement security leadership to win enterprise deals, achieve compliance, and develop strategic security programs.

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.