A collection of awesome resources, tools, and other shiny things for cybersecurity blue teams.
Cybersecurity blue teams are groups of individuals who identify security flaws in information technology systems, verify the effectiveness of security measures, and monitor the systems to ensure that implemented defensive measures remain effective in the future. While not exclusive, this list is heavily biased towards Free Software projects and against proprietary products or corporate services. For offensive TTPs, please see awesome-pentest.
Many cybersecurity professionals enable racist state violence, wittingly or unwittingly, by providing services to local, state, and federal policing agencies or otherwise cooperating with similar institutions who do so. This evil most often happens through the coercive mechanism of employment under threat of lack of access to food, shelter, or healthcare. Despite this list's public availability, it is the maintainer's intention and hope that this list supports the people and organizations who work to counter such massive albeit banal evil.
Ansible Lockdown - Curated collection of information security themed Ansible roles that are both vetted and actively maintained.
Clevis - Plugable framework for automated decryption, often used as a Tang client.
DShell - Extensible network forensic analysis framework written in Python that enables rapid development of plugins to support the dissection of network packet captures.
Dev-Sec.io - Server hardening framework providing Ansible, Chef, and Puppet implementations of various baseline security configurations.
PyREBox - Python-scriptable reverse engineering sandbox, based on QEMU.
Watchtower - Container-based solution for automating Docker container base image updates, providing an unattended upgrade experience.
Code libraries and bindings
MultiScanner - File analysis framework written in Python that assists in evaluating a set of files by automatically running a suite of tools against them and aggregating the output.
Posh-VirusTotal - PowerShell interface to VirusTotal.com APIs.
censys-python - Python wrapper to the Censys REST API.
libcrafter - High level C++ network packet sniffing and crafting library.
python-dshield - Pythonic interface to the Internet Storm Center/DShield API.
python-sandboxapi - Minimal, consistent Python API for building integrations with malware sandboxes.
python-stix2 - Python APIs for serializing and de-serializing Structured Threat Information eXpression (STIX) JSON content, plus higher-level APIs for common tasks.
Security Orchestration, Automation, and Response (SOAR)
Aaia - Helps in visualizing AWS IAM and Organizations in a graph format with help of Neo4j.
Checkov - Static analysis for Terraform (infrastructure as code) to help detect CIS policy violations and prevent cloud security misconfiguration.
Falco - Behavioral activity monitor designed to detect anomalous activity in containerized applications, hosts, and network packet flows by auditing the Linux kernel and enriched by runtime data such as Kubernetes metrics.
Kata Containers - Secure container runtime with lightweight virtual machines that feel and perform like containers, but provide stronger workload isolation using hardware virtualization technology as a second layer of defense.
Principal Mapper (PMapper) - Quickly evaluate IAM permissions in AWS via script and library capable of identifying risks in the configuration of AWS Identity and Access Management (IAM) for an AWS account or an AWS organization.
Prowler - Tool based on AWS-CLI commands for Amazon Web Services account security assessment and hardening.
Scout Suite - Open source multi-cloud security-auditing tool, which enables security posture assessment of cloud environments.
gVisor - Application kernel, written in Go, that implements a substantial portion of the Linux system surface to provide an isolation boundary between the application and the host kernel.
Cortex - Provides horizontally scalable, highly available, multi-tenant, long term storage for Prometheus.
Jaeger - Distributed tracing platform backend used for monitoring and troubleshooting microservices-based distributed systems.
OpenTelemetry - Observability framework for cloud-native software, comprising a collection of tools, APIs, and SDKs for exporting application performance metrics to a tracing backend (formerly maintained by the OpenTracing and OpenCensus projects).
Prometheus - Open-source systems monitoring and alerting toolkit originally built at SoundCloud.
Zipkin - Distributed tracing system backend that helps gather timing data needed to troubleshoot latency problems in service architectures.
Linkerd - Ultra light Kubernetes-specific service mesh that adds observability, reliability, and security to Kubernetes applications without requiring any modification of the application itself.
Managed Kubernetes Inspection Tool (MKIT) - Query and validate several common security-related configuration settings of managed Kubernetes cluster objects and the workloads/resources running inside the cluster.
Polaris - Validates Kubernetes best practices by running tests against code commits, a Kubernetes admission request, or live resources already running in a cluster.
Sealed Secrets - Kubernetes controller and tool for one-way encrypted Secrets.
k-rail - Workload policy enforcement tool for Kubernetes.
kube-forensics - Allows a cluster administrator to dump the current state of a running pod and all its containers so that security professionals can perform off-line forensic analysis.
kube-hunter - Open-source tool that runs a set of tests ("hunters") for security issues in Kubernetes clusters from either outside ("attacker's view") or inside a cluster.
kubernetes-event-exporter - Allows exporting the often missed Kubernetes events to various outputs so that they can be used for observability or alerting purposes.
Consul - Solution to connect and configure applications across dynamic, distributed infrastructure and, with Consul Connect, enabling secure service-to-service communication with automatic TLS encryption and identity-based authorization.
Istio - Open platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data.
GPG Sync - Centralize and automate OpenPGP public key distribution, revocation, and updates amongst all members of an organization or team.
Geneva (Genetic Evasion) - Novel experimental genetic algorithm that evolves packet-manipulation-based censorship evasion strategies against nation-state level censors to increase availability of otherwise blocked content.
GlobaLeaks - Free, open source software enabling anyone to easily set up and maintain a secure whistleblowing platform.
SecureDrop - Open source whistleblower submission system that media organizations and NGOs can install to securely accept documents from anonymous sources.
Teleport - Allows engineers and security professionals to unify access for SSH servers, Kubernetes clusters, web applications, and databases across all environments.
Bane - Custom and better AppArmor profile generator for Docker containers.
BlackBox - Safely store secrets in Git/Mercurial/Subversion by encrypting them "at rest" using GnuPG.
Cilium - Open source software for transparently securing the network connectivity between application services deployed using Linux container management platforms like Docker and Kubernetes.
Clair - Static analysis tool to probe for vulnerabilities introduced via application container (e.g., Docker) images.
CodeQL - Discover vulnerabilities across a codebase by performing queries against code as though it were data.
DefectDojo - Application vulnerability management tool built for DevOps and continuous security integration.
Gauntlt - Pentest applications during routine continuous integration build pipelines.
Git Secrets - Prevents you from committing passwords and other sensitive information to a git repository.
SOPS - Editor of encrypted files that supports YAML, JSON, ENV, INI and binary formats and encrypts with AWS KMS, GCP KMS, Azure Key Vault, and PGP.
Snyk - Finds and fixes vulnerabilities and license violations in open source dependencies and container images.
SonarQube - Continuous inspection tool that provides detailed reports during automated testing and alerts on newly introduced security vulnerabilities.
Trivy - Simple and comprehensive vulnerability scanner for containers and other artifacts, suitable for use in continuous integration pipelines.
Vault - Tool for securely accessing secrets such as API keys, passwords, or certificates through a unified interface.
git-crypt - Transparent file encryption in git; files which you choose to protect are encrypted when committed, and decrypted when checked out.
helm-secrets - Helm plugin that helps manage secrets with Git workflow and stores them anywhere, backed by SOPS.
Application or Binary Hardening
DynInst - Tools for binary instrumentation, analysis, and modification, useful for binary patching.
DynamoRIO - Runtime code manipulation system that supports code transformations on any part of a program, while it executes, implemented as a process-level virtual machine.
Egalito - Binary recompiler and instrumentation framework that can fully disassemble, transform, and regenerate ordinary Linux binaries designed for binary hardening and security research.
Valgrind - Instrumentation framework for building dynamic analysis tools.
Compliance testing and reporting
Chef InSpec - Language for describing security and compliance rules, which become automated tests that can be run against IT infrastructures to discover and report on non-compliance.
OpenSCAP Base - Both a library and a command line tool (oscap) used to evaluate a system against SCAP baseline profiles to report on the security posture of the scanned system(s).
Atheris - Coverage-guided Python fuzzing engine based off of libFuzzer that supports fuzzing of Python code but also native extensions written for CPython.
FuzzBench - Free service that evaluates fuzzers on a wide variety of real-world benchmarks, at Google scale.
CanaryTokens - Self-hostable honeytoken generator and reporting dashboard; demo version available at CanaryTokens.org.
Kushtaka - Sustainable all-in-one honeypot and honeytoken orchestrator for under-resourced blue teams.
Manuka - Open-sources intelligence (OSINT) honeypot that monitors reconnaissance attempts by threat actors and generates actionable intelligence for Blue Teamers.
Tarpits
Endlessh - SSH tarpit that slowly sends an endless banner.
LaBrea - Program that answers ARP requests for unused IP space, creating the appearance of fake machines that answer further requests very slowly in order to slow down scanners, worms, etcetera.
Host-based tools
Artillery - Combination honeypot, filesystem monitor, and alerting system designed to protect Linux and Windows operating systems.
chkrootkit - Locally checks for signs of a rootkit on GNU/Linux systems.
Crowd Inspect - Free tool for Windows systems aimed to alert you to the presence of malware that may be communicating over the network.
Fail2ban - Intrusion prevention software framework that protects computer servers from brute-force attacks.
Rootkit Hunter (rkhunter) - POSIX-compliant Bash script that scans a host for various signs of malware.
Sandboxes
Bubblewrap - Sandboxing tool for use by unprivileged Linux users capable of restricting access to parts of the operating system or user data.
Dangerzone - Take potentially dangerous PDFs, office documents, or images and convert them to a safe PDF.
Firejail - SUID program that reduces the risk of security breaches by restricting the running environment of untrusted applications using Linux namespaces and seccomp-bpf.
Identity and AuthN/AuthZ
Gluu Server - Central authentication and authorization for Web and mobile applications with a Free and Open Source Software cloud-native community distribution.
CIRTKit - Scriptable Digital Forensics and Incident Response (DFIR) toolkit built on Viper.
Fast Incident Response (FIR) - Cybersecurity incident management platform allowing for easy creation, tracking, and reporting of cybersecurity incidents.
Rekall - Advanced forensic and incident response framework.
TheHive - Scalable, free Security Incident Response Platform designed to make life easier for SOCs, CSIRTs, and CERTs, featuring tight integration with MISP.
threat_note - Web application built by Defense Point Security to allow security researchers the ability to add and retrieve indicators related to their research.
Evidence collection
AutoMacTC - Modular, automated forensic triage collection framework designed to access various forensic artifacts on macOS, parse them, and present them in formats viable for analysis.
Security Onion - Free and open source GNU/Linux distribution for intrusion detection, enterprise security monitoring, and log management.
Qubes OS - Desktop environment built atop the Xen hypervisor project that runs each end-user program in its own virtual machine intended to provide strict security controls to constrain the reach of any successful malware exploit.
Swordphish - Platform allowing to create and manage (fake) phishing campaigns intended to train people in identifying suspicious mails.
mailspoof - Scans SPF and DMARC records for issues that could allow email spoofing.
phishing_catcher - Configurable script to watch for issuances of suspicious TLS certificates by domain name in the Certificate Transparency Log (CTL) using the CertStream service.
Preparedness training and wargaming
(Also known as adversary emulation, threat simulation, or similar.)
APTSimulator - Toolset to make a system look as if it was the victim of an APT attack.
Atomic Red Team - Library of simple, automatable tests to execute for testing security controls.
BadBlood - Fills a test (non-production) Windows Domain with data that enables security analysts and engineers to practice using tools to gain an understanding and prescribe to securing Active Directory.
Caldera - Scalable, automated, and extensible adversary emulation platform developed by MITRE.
Drool - Replay DNS traffic from packet capture files and send it to a specified server, such as for simulating DDoS attacks on the DNS and measuring normal DNS querying.
DumpsterFire - Modular, menu-driven, cross-platform tool for building repeatable, time-delayed, distributed security events for Blue Team drills and sensor/alert mapping.
Infection Monkey - Open-source breach and attack simulation (BAS) platform that helps you validate existing controls and identify how attackers might exploit your current network security gaps.
Metta - Automated information security preparedness tool to do adversarial simulation.
Network Flight Simulator (flightsim) - Utility to generate malicious network traffic and help security teams evaluate security controls and audit their network visibility.
RedHunt OS - Ubuntu-based Open Virtual Appliance (.ova) preconfigured with several threat emulation tools as well as a defender's toolkit.
Security configurations
(Also known as secure-by-default baselines and implemented best practices.)
Bunkerized-nginx - Docker image of an NginX configuration and scripts implementing many defensive techniques for Web sites.
Security monitoring
Starbase - Collects assets and relationships from services and systems into an intuitive graph view to offer graph-based security analysis for everyone.
Endpoint Detection and Response (EDR)
Wazuh - Open source, multiplatform agent-based security monitoring based on a fork of OSSEC HIDS.
Moloch - Augments your current security infrastructure to store and index network traffic in standard PCAP format, providing fast, indexed access.
OwlH - Helps manage network IDS at scale by visualizing Suricata, Zeek, and Moloch life cycles.
Real Intelligence Threat Analysis (RITA) - Open source framework for network traffic analysis that ingests Zeek logs and detects beaconing, DNS tunneling, and more.
Respounder - Detects the presence of the Responder LLMNR/NBT-NS/MDNS poisoner on a network.
Snort - Widely-deployed, Free Software IPS capable of real-time packet analysis, traffic logging, and custom rule-based triggers.
SpoofSpotter - Catch spoofed NetBIOS Name Service (NBNS) responses and alert to an email or log file.
Stenographer - Full-packet-capture utility for buffering packets to disk for intrusion detection and incident response purposes.
Suricata - Free, cross-platform, IDS/IPS with on- and off-line analysis modes and deep packet inspection capabilities that is also scriptable with Lua.
Tsunami - General purpose network security scanner with an extensible plugin system for detecting high severity vulnerabilities with high confidence.
VAST - Free and open-source network telemetry engine for data-driven security investigations.
Wireshark - Free and open-source packet analyzer useful for network troubleshooting or forensic netflow analysis.
Zeek - Powerful network analysis framework focused on security monitoring, formerly known as Bro.
netsniff-ng - Free and fast GNU/Linux networking toolkit with numerous utilities such as a connection tracking tool (flowtop), traffic generator (trafgen), and autonomous system (AS) trace route utility (astraceroute).
Security Information and Event Management (SIEM)
AlienVault OSSIM - Single-server open source SIEM platform featuring asset discovery, asset inventorying, behavioral monitoring, and event correlation, driven by AlienVault Open Threat Exchange (OTX).
Prelude SIEM OSS - Open source, agentless SIEM with a long history and several commercial variants featuring security event collection, normalization, and alerting from arbitrary log input and numerous popular monitoring tools.
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