https://www.reddit.com/r/firefox/comments/jbua53/nanoadblocker_nanodefender_is_malware_now/
User that dont know about it
It's only the chromium versions that are affected by this. The firefox version is not affected by the ownership change as it is maintained by a different person (LiCybora) and he will not make the changes done by the new developers. The future of the Firefox fork is undecided atm.
NA and ND with LiCybora as author on AMO or on my GitHub repository are still under my control and independent from any entities or people.
You can read the whole thing here
tl;dr: Your data is safe on the Firefox version.
Sounds like everything is fine for us for now, then.
Most helpful comment
It's only the chromium versions that are affected by this. The firefox version is not affected by the ownership change as it is maintained by a different person (LiCybora) and he will not make the changes done by the new developers. The future of the Firefox fork is undecided atm.
You can read the whole thing here
tl;dr: Your data is safe on the Firefox version.