am i safe from any type of hackers? is there anytime where by mozilla have bben under security threat or been under serious hackers and resulted in loss of imformation of people?

Hi kmamokopo93, [https://www.reddit.com/r/firefox/comments/1wiu2yd/if_youre_new_here_because_of_a_video_you_saw_this/ This Reddit thread] from us might be relevant for you which explains more about Firefox's privacy features and how you can configure Firefox for the best privacy experience. Hope that helps!