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.
You never know what security holes exist until they’re exploited. Nothing you can really do about that. Security and convenience have always, and will always, be a trade off and a matter of personal acceptability. If you host anything, it will be potentially vulnerable, way less so if you take proper precautions. If you’re not just overtly insecure, you’ll probably be fine, but there’s no way to say for sure.