osquery is a cross-platform endpoint agent that exposes operating system state as SQL tables, enabling real-time monitoring, security analytics, and incident response. It runs as a daemon (osqueryd) or interactive shell (osqueryi), with a plugin architecture for configuration, logging, and event collection. The codebase is written in C++ and supports Linux, macOS, and Windows, with hundreds of tables covering processes, network connections, file integrity, hardware, and cloud metadata. The architecture is built around a registry pattern for plugins, an event publisher/subscriber model for real-time telemetry, and a SQLite virtual table layer for query execution. The project is production-grade, with extensive unit and integration tests, fuzzing harnesses, benchmarks, and a CVE scanning workflow. It is actively maintained with regular releases and a large contributor base.
SAP Privileges is a native macOS enterprise utility that grants standard users temporary administrator rights on demand, with automatic expiration and policy-driven revocation. The application is implemented in Objective-C and is composed of multiple cooperating processes: a main GUI app, a menu bar agent, a privileged launch daemon, an XPC service, a helper tool for system extension management, an Endpoint Security system extension for self-protection, a CLI tool, and a Dock tile plugin. The actual privilege change is performed by the daemon using Collaboration Services to add or remove the current console user from the admin group, while the system extension protects the app's files and launchd jobs from tampering. Configuration is driven by NSUserDefaults and can be forced via MDM configuration profiles, supporting expiration intervals, authentication requirements (biometric, password, smartcard), renewal, revocation on login/lock/time change, and remote logging via RFC 5424 syslog or JSON webhooks.
This repository is the infrastructure-as-code backbone for Security Onion, a free and open Linux distribution for threat hunting, enterprise security monitoring, and log management. It contains over 1,700 files of SaltStack states, Jinja templates, shell scripts, and Python modules that orchestrate the deployment, configuration, and lifecycle management of a distributed grid of security monitoring nodes. The code manages the entire Elastic Stack (Elasticsearch, Logstash, Kibana), network sensors (Zeek, Suricata), file analysis (Strelka), endpoint monitoring (Elastic Fleet/Agent), authentication (Kratos/Hydra), messaging (Kafka/Redis), metrics (Telegraf/InfluxDB), and the Security Onion Console (SOC) web UI. It is not a standalone application but a deployment and configuration system that transforms a bare OS into a fully operational security operations center. The repository is actively maintained with frequent commits, versioned releases, and a large community. Key architecture patterns include role-based state inclusion via `allowed_states`, consistent Docker container management, Jinja-based configuration merging, and event-driven reactors for rule pushes. Notable reusable components include a self-contained threat intelligence analyzer framework, a YAML manipulation CLI tool, and polling-based beacons that avoid inotify leaks.