COMMENT "BLACKBIRD"
Find every account tied to your username
A free tool called Blackbird runs one username across hundreds of sites in seconds. Run it on YOURSELF to see the trail you've left and clean it up. Here's how, free.
01Quick steps
- 1Get Blackbird, a free open-source tool, from GitHub.
- 2Follow the one-time setup in its README (Claude Code can do it for you).
- 3Run it on your OWN usernames first.
- 4Delete old accounts you don't use, lock down the rest.
- 5Use different usernames on sensitive accounts so they can't be linked.
02Your ready to use prompt
Prompt for Claude Code: 'Install the open-source tool Blackbird from GitHub and run it on this username: <your username>. Then summarize the results as a simple list: site, profile link, and whether it looks active, so I can decide what to delete or lock down.'
03Full tutorial
Investigators use username tools to find everywhere a person is registered. The smart defensive move is to run one on yourself first, so you see the same trail anyone else could, and shrink it.
It is free and open-source on GitHub: https://github.com/p1ngul1n0/blackbird (or search 'blackbird osint'). It has thousands of stars, so it is a real, maintained tool.
Follow the README to install it (a few commands). If you use Claude Code, it can install and run it for you, just give it your username.
Run it on the usernames you actually use, especially any you reuse across sites. You will likely be surprised how many accounts come back.
Go through the hits in three buckets: delete (old accounts you do not use), secure (ones you keep), and ignore (not you). Deleting unused accounts is the biggest quick win.
On the accounts you keep, change any reused password to a unique one, and turn on two-factor. A password manager makes this painless.
Use a different username on sensitive accounts (banking, email, crypto) so a search cannot link them to your public profiles. Separation is privacy.
This is for protecting your own footprint. Do not use it to track or harass other people. Check yourself, clean up, and recheck every few months.
This is for defending your own privacy. Do not use it to target other people.