Attributions

The main list of phishing domains behind our link checks comes from Phishing.Database, refreshed daily. Its licence:

MIT License

Copyright (c) 2018-2025 Mitchell Krog - github.com/mitchellkrogza
Copyright (c) 2018-2025 Nissar Chababy - github.com/funilrys
Copyright (c) 2018-2025 Phishing.Database Contributors - github.com/Phishing-Database

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Our list of servers that control infected computers comes from Feodo Tracker by abuse.ch, which publishes it under CC0.

We find adult sites by asking 1.1.1.1 for Families, Cloudflare's public filter, about a link's domain. It's used under Cloudflare's terms. Cloudflare isn't connected with Purlock and doesn't endorse it.

The QR code checker reads pictures in your browser using jsQR, under the Apache License 2.0.