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Lots of dead Lemmy/Kbin domains have CNAME records pointing to the same domain parking company (lemmy.pierre-couy.fr)
submitted 4 months ago* (last edited 4 months ago) by pcouy@lemmy.pierre-couy.fr to c/fediverse@lemmy.world
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While monitoring my Pi-Hole logs today, I noticed a bunch of queries for XXXXXX.bodis.com, where XXXXXX are numbers. I saw a few variations for the numbers, each one being queried several times.

Digging further, I found out these queries were caused by CNAME records on domains that look like they used to point to Lemmy/Kbin instances.

From what I understand, domain owners can register a CNAME record to XXXXXX.bodis.com and earn some money from the traffic it receives. I guess that each number variation is a domain owner ID in Bodis' database. I saw between 5 to 10 different number variations, each one being pointed to by a bunch of old Lemmy domains.

This probably means that among actors who snatch expired domains, several of them have taken a specific interest with expired domains of old Lemmy instances. Another hypothesis is that there were a lot of domains registered for hosting Lemmy during the Reddit API debacle (about 1 year ago), which started expiring recently.

Are there any other instance admins who noticed the same thing ? Is any of my two hypothesis more plausible than the other ? Should we worry about this trend ?

Anyway, I hope this at least serves as a reminder to not let our domains expire ;)

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[-] otter@lemmy.ca 17 points 4 months ago

From what I can tell, an instance is either 'linked' (federated) or 'blocked' (defederated) on Lemmy. Mastodon has some more granularity. If an instance came back as a zombie, it wouldn't be any more powerful privilege wise than a new instance that is malicious. It would get defederated same as always.

What could be a problem is on the individual user level. Say that a lot of users sort their feed by subscribed. They are not affected by random instances coming and going. However, they will be affected if a bunch of their (dead) subscribed communities suddenly become malicious.

Anyway, I hope this at least serves as a reminder to not let our domains expire ;)

It's an important point for sure.

Your sensitive data and logins are tied to email addresses, which are tied to domains. Lose your domain, someone can access everything.

[-] pcouy@lemmy.pierre-couy.fr 17 points 4 months ago* (last edited 4 months ago)

Your sensitive data and logins are tied to email addresses, which are tied to domains. Lose your domain, someone can access everything.

I recently stumbled upon an article showing how bad this can be when the expired domains were used for important/serious stuff

this post was submitted on 26 Jul 2024
174 points (98.9% liked)

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