danielmiessler/seclists

SecLists is a large collection of text lists that security testers use during penetration testing and security assessments. A penetration tester is someone hired to try to break into a system to find vulnerabilities before real attackers do. Many security testing techniques involve trying large numbers of values systematically, for example guessing common passwords, trying common file and directory names on a web server, or inserting known attack strings into input fields. SecLists brings together all the wordlists and data files needed for these tasks in one place. The collection includes many categories of lists: common usernames and passwords for brute-force credential testing, URL paths and directory names for discovering hidden web content through fuzzing (automated probing), sensitive data patterns for finding accidentally exposed files, injection payloads for testing against SQL injection, cross-site scripting, and other vulnerabilities, web shell filenames, subdomain names for reconnaissance, and more. The goal described in the README is that a security tester can clone this repository onto a new testing machine and immediately have access to every type of list they might need, without hunting for individual lists across the internet. It is pre-installed in security-focused Linux distributions like Kali Linux and BlackArch. You would use SecLists if you are a security researcher, penetration tester, or bug bounty hunter who needs wordlists as input for security tools like Burp Suite, ffuf, or hashcat. There is no software to run from this repository; the files themselves are the product. The repository is very large (multiple gigabytes), so the README suggests using a shallow git clone for faster download. It is licensed under MIT and maintained by a small team of security researchers.