This extension is based on a 600 news websites’ urls database. It’s been developed by the French news Company Le Monde. It aims at alerting people about fake news on the Internet. If you intend to re-use this code to create your own extension, please let us know about it: decodex@lemonde.fr You'll need to develop your own backend to send data in JSON array. Alternatively, you may also modify it and store your data in the extension. The extension updates data every 24 hours. The extension does not store any data from user.