1. alexa-top-sites (2022). https://aws.amazon.com/cn/alexa-top-sites/
2. Anudeepnd (2022). https://github.com/anudeepND/blacklist
3. Coinblockerlists (2022). https://gitlab.com/ZeroDot1/CoinBlockerLists
4. Malware domain block list (2022). http://www.malwaredomains.com/
5. Phishtank (2022). http://www.phishtank.com/