Notepad++ was one of FOSS in this program. HackerOne is the platform / organizer. Thanks to HackerOne teams help (and EU-FOSSA team’s choose of Notepad++, of course), the project is more robust after this auditing.
The official EU-FOSSA for Notepad++ is terminated, Notepad++ will stay in HackerOne’s platform for the management of its vulnerabilities:
https://hackerone.com/notepad-plus-plus

Please open any Notepad++ security issue you found on above link - there’s no bounty but you have a big ❤THANK YOU❤ from Notepad++ community.