Projects sharing features with Retter

Fail2ban is an intrusion prevention system that monitors system log files to detect malicious activity and automatically enforce security policies. By parsing log data in real time, the tool identifies patterns of unauthorized access or repeated authentication failures and responds by dynamically updating network access control lists to restrict offending sources. The software functions as a firewall automation tool that maintains stateful tracking of suspicious behavior across various network services. It utilizes a regex-driven pattern matching engine to identify specific attack signatures,

This repository serves as a comprehensive educational guide and curriculum for individuals beginning their journey in web security and bug bounty hunting. It functions as a centralized hub that aggregates foundational knowledge, technical guides, and practical resources to assist newcomers in mastering the core principles of vulnerability research and ethical hacking. The project distinguishes itself through a community-driven curation model, where educational materials such as books, blogs, and labs are organized into structured learning paths. By leveraging a version-controlled, markdown-ba

The modern spam protection. Protects your forms from spam by simply checking the content. Open source, Free to use, Accessible, and Self-Hosted.

s2n is a C-based security library and TLS protocol implementation that serves as a secure network transport layer. It provides a modular cryptographic backend interface to encrypt data streams, manage handshakes, and handle mutual authentication between peers. The project focuses on post-quantum cryptography, integrating quantum-resistant key exchange and digital signatures to protect connections against future computing threats. It distinguishes itself through security hardening measures, such as memory-locked secret storage to prevent keys from being swapped to disk and timing-attack mitiga

This project is a comprehensive, community-curated directory of cybersecurity resources, tools, and educational materials. It functions as a centralized index for researchers and students to discover frameworks and utilities across the entire security lifecycle, ranging from initial vulnerability assessment to post-exploitation analysis. The repository distinguishes itself through a hierarchical taxonomy that organizes diverse security disciplines into a searchable, version-controlled knowledge base. Rather than hosting software directly, it utilizes a decentralized aggregation model that lin

Hide your private files and apps with a single click.

A self-hosted, customizable, easy-to-implement and user-friendly captcha for PHP.

Vault is a centralized secrets management platform designed to secure, store, and control access to sensitive credentials such as API keys, passwords, certificates, and encryption keys. At its core, the system employs a barrier-based cryptographic sealing mechanism that requires an unseal process to decrypt internal storage, ensuring that sensitive data remains protected. It provides identity-based access control to manage granular permissions across distributed infrastructure, effectively centralizing security policies and authentication for both human and machine workloads. What distinguish

POMjs is a random password generator in HTML and pure Javascript with no cookies and no trackers. It has been translated into several languages.

KeePassDX is an Android password manager that opens, edits, and stores encrypted credential databases using the open KeePass 2.x file format. It keeps all password data stored locally on the device without requiring cloud sync or internet access, and supports multiple symmetric-key encryption algorithms including AES, Twofish, and ChaCha20 with Argon2 key derivation. The app unlocks the credential database by delegating authentication to the platform's biometric API, allowing users to bypass the master password entry using fingerprint or face recognition. It generates one-time passwords local

A web application featuring some handy password tools

v2rayNG is an Android proxy client designed to route device network traffic through encrypted tunnels. It functions as a network routing engine that intercepts outgoing requests and applies custom traffic rules to manage connectivity and enhance user privacy. The application distinguishes itself by integrating a high-performance network proxy core, which enables complex protocol translation and traffic management directly on mobile devices. It utilizes local loopback and Unix-socket tunneling to redirect device-wide requests, maintaining persistent connectivity through native background servi

Aegis is a mobile application designed to manage and store multi-factor authentication tokens. It functions as a local-first credential vault that generates time-based and counter-based one-time passwords to verify user identity across various online services. The application secures sensitive authentication data by employing authenticated symmetric encryption and hardware-backed key storage to protect credentials at rest. Access to the stored tokens is gated by system-level biometric authentication or password verification, ensuring that only authorized users can retrieve the generated secur

A curated list of awesome Fuzzing(or Fuzz Testing) for software security

CrowdSec is a collaborative, distributed security engine designed for threat detection and infrastructure protection. It functions as an intrusion detection system that parses logs and network traffic to identify malicious patterns, utilizing a bucket-based threshold detection model to aggregate events and trigger alerts. The platform is built on a modular architecture that includes a centralized local API server for managing security signals and a relational database for persistent storage of remediation decisions. What distinguishes the project is its decoupled enforcement model, which offl

:computer:🛡️ A curated collection of awesome resources, tools, and other shiny things for cybersecurity blue teams.

:unlock::sunglasses: A curated list of awesome guides, tools, and other resources related to the security and compromise of locks, safes, and keys.

Teleport is a zero-trust access platform designed to provide secure, identity-based connectivity to servers, databases, and Kubernetes clusters. It functions as a centralized gateway that replaces static credentials with short-lived, identity-bound cryptographic certificates, effectively eliminating the need for traditional VPNs and long-term secret exposure. The platform distinguishes itself by orchestrating access through a unified control plane that maps external identity provider claims to granular, role-based infrastructure permissions. It enforces security through mutual TLS gateways an

This project is a community-maintained, open-source knowledge base that serves as a structured index for cybersecurity resources. It provides a centralized directory of tools, frameworks, and documentation designed to assist security researchers, penetration testers, and developers in hardening digital infrastructure and navigating the security tooling ecosystem. The repository distinguishes itself through a collaborative curation model that relies on distributed user contributions to maintain an accurate and up-to-date registry of technical assets. By organizing information into structured m

Libsodium is a portable, C-based cryptographic library that provides a collection of modern primitives for encryption, decryption, digital signatures, password hashing, and secure key exchange. It is designed to facilitate secure communication and data integrity across diverse hardware architectures and operating systems. The library distinguishes itself by utilizing constant-time primitive execution to prevent side-channel attacks and employing memory-hard algorithms to increase the difficulty of brute-force password attacks. It abstracts complex mathematical operations into simplified inter

🚗 A curated list of resources for learning about vehicle security and car hacking.

👤 Identity and Access Management knowledge for cloud platforms

Keycloak is an open-source identity and access management server that provides a centralized platform for user authentication, authorization, and identity federation. It functions as a standards-compliant identity provider, utilizing a centralized engine to validate credentials and issue cryptographically signed tokens based on industry-standard protocols like OpenID Connect and SAML. This enables organizations to secure diverse applications and services through a unified authentication layer. The platform distinguishes itself through its cloud-native orchestration and high-availability capab

LibTomCrypt is a fairly comprehensive, modular and portable cryptographic toolkit that provides developers with a vast array of well known published block ciphers, one-way hash functions, chaining modes, pseudo-random number generators, public key cryptography and a plethora of other routines.

OpenFGA is a fine-grained authorization server and policy decision point that implements relationship-based access control. It serves as a centralized authorization service for evaluating access requests and managing relationship tuples across distributed microservices and multi-tenant environments. The engine combines relationship graphs with attribute-based access control, using the Common Expression Language to evaluate dynamic runtime attributes and conditional access rules. It handles complex hierarchies and nested permissions by traversing chains of associations and parent-child links t