> [!info] > Input: [[Username|username]] > Output: [[Social Media Account|personal accounts]] > > Types: [[Behavioural Weakness|behavioural]], [[Technical Weakness|technical]] > Weakness: [[SOWEL-6. Reusing Personal Data]] ### Explanation People have unique nicknames and use the same or similar ones (similar pattern) for personal accounts. Don't forget that email addresses are also account in email systems, and they tend to be registered with the same rules (except working ones). ### Examples - [OSINT Username generation guide](https://github.com/soxoj/username-generation-guide) - a guide explaining the nuances of usernames use - [How Unique and Traceable are Usernames?](https://arxiv.org/pdf/1101.5578.pdf) - a paper about username statistics ### Tools - [Maigret](https://github.com/soxoj/maigret) - a CLI application to search accounts by username across ~3000 sites and get additional account information - [Sherlock](https://github.com/sherlock-project/sherlock) - a well-known CLI application to search accounts by username across ~400 sites - [WhatsMyName](https://whatsmyname.app/) - a useful web application to search accounts by username across ~600 sites ### See also - [[SOTL-8.3. Use Personal-Info-Based Identifiers]] - [[SOTL-8.2. Use Names Permutations]]