I have been thinking about self-hosting my personal photos on my linux server. After the recent backdoor was detected I’m more hesitant to do so especially because i’m no security expert and don’t have the time and knowledge to audit my server. All I’ve done so far is disabling password logins and changing the ssh port. I’m wondering if there are more backdoors and if new ones are made I can’t respond in time. Appreciate your thoughts on this for an ordinary user.
Use software with an active community, don’t install things you don’t need, update regularly, and be thankful that you probably aren’t worth using a zero-day backdoor on. Your telecom provider, on the other hand, might be - but there’s not much you can do about that!