this post was submitted on 28 Aug 2023
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General Discussion
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Welcome to Lemmy.World General!
This is a community for general discussion where you can get your bearings in the fediverse. Discuss topics & ask questions that don't seem to fit in any other community, or don't have an active community yet.
🪆 About Lemmy World
🧭 Finding Communities
Feel free to ask here or over in: !lemmy411@lemmy.ca!
Also keep an eye on:
- !newcommunities@lemmy.world
- !communitypromo@lemmy.ca
- !new_communities@mander.xyz
- !communityspotlight@lemmy.world
- !wowthislemmyexists@lemmy.ca!
For more involved tools to find communities to join: check out Lemmyverse!
💬 Additional Discussion Focused Communities:
- !actual_discussion@lemmy.ca - Note this is for more serious discussions.
- !casualconversation@lemm.ee - The opposite of the above, for more laidback chat!
- !letstalkaboutgames@feddit.uk - Into video games? Here's a place to discuss them!
- !movies@lemm.ee - Watched a movie and wanna talk to others about it? Here's a place to do so!
- !politicaldiscussion@lemmy.world - Want to talk politics apart from political news? Here's a community for that!
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Remember, Lemmy World rules also apply here.
0. See: Rules for Users.
- No bigotry: including racism, sexism, homophobia, transphobia, or xenophobia.
- Be respectful. Everyone should feel welcome here.
- Be thoughtful and helpful: even with ‘silly’ questions. The world won’t be made better by dismissive comments to others on Lemmy.
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- Posts concerning other instances' activity/decisions are better suited to !fediverse@lemmy.world or !lemmydrama@lemmy.world communities.
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- No NSFW content.
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Any vulnerability will be exploited. The fact that Lemmy federates and caches media by default is a huge vulnerability in a decentralized network. This was inevitable, I'm just glad I didn't wind up having to see it myself.
Growing pains of the fediverse. Hopefully we tackle this early and don't have repeats
How is this a specific weakness of lemmy though? What's stopping people from posting CSAM on reddit or facebook or whatever?
Those sites are centralized and governed by a single private company, so they can have a dedicated team of content moderators to check and verify illegal content. Federation and how lemmy caches content on all federated instances means when someone posts illegal stuff on one instance, every other connected instance gets a copy too. So random guy running an instance in his room has to go find the content and purge it themselves even though it wasn’t posted directly on their instance, or they can be held legally liable depending on the country they’re in. It’s also the reason (whether you agree with it or not) why instances like .world preemptively blocked piracy communities.
They use specific tools connected to a database that automatically detect and disallow that material from being posted.
If something like that gets posted to reddit, it is in a single database (even if it is reduntant and/or distributed) controlled by a single entity and can be removed. Cleanup is a breeze.
In Lemmy, since servers cache federated media, it gets saved across multiple servers. Every single admin has to be notified and then manually do the cleanup on their server.