You can if they don't include the copyright header: "The above copyright notice and this permission notice shall be included in all copies or substantial portio

You can if they don't include the copyright header: "The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software." Which, as far as I can tell they haven't done. Their MIT licence claims their own copyright. No reference to the library used in readme. https://github.com/kagisearch/privacypass-lib/blob/main/LICENSE https://github.com/kagisearch/privacypass-lib/blob/main/LICE... https://github.com/kagisearch/privacypass-lib/blob/main/README.md https://github.com/kagisearch/privacypass-lib/blob/main/READ... Usually when using apps that use MIT licensed libs they also implement a notice in a user-facing way. Google maps for instance has a (albeit hidden) section in their settings menu referencing at least one MIT licensed library.