Ask HN: Am I safe regarding xz?

Upon seeing the xz backdoor reports, I checked my version and saw that my machine (arch btw) contained the compromised version. I swiftly updated to a patched version but am unsure of how to detect if it has been exploited.

I had no ports open for ssh (or anything else), but the sshd service was active.

What should I do ? Wipe and reinstall my distro, or am I safe ?

Thanks