this post was submitted on 10 Aug 2025
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You Should Know

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I recently learned that voting on lemmy is not anonymous. Anyone can get information about who has upvoted and downvoted a post or comment.

In combination with your IP, this is a massive privacy (maybe even physical security) risk. Also, people can target you for your votes.

Sadly, this is something where I would prefer Reddit over Lemmy. Big tech scrapes data from both places anyways, at least Reddit is safe.

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[–] Dholi@lemmy.ca 36 points 2 days ago (2 children)

at least Reddit is safe.

Lmao, what!? Reddit tries their best to know exactly who you are, where you live, your education, where you work, etc... And then they sell that data to anyone.

[–] LemmyThinkAboutThat@lemmy.myserv.one 5 points 2 days ago (1 children)

Yes, exactly! This is just what they hoard on iOS devices:

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[–] socsa@piefed.social 21 points 2 days ago (8 children)

A lot of people here still refuse to understand that Lemmy, as it currently exists, is a privacy nightmare, and the voting thing is just the top of the iceberg. There are several de-anonymization attacks possible involving dynamically serving different content to different users. This, combined with the public voting makes it possible that someone can dox an account and expose a lot more information than other forums where that information is more private.

Public votes also open the fediverse up to much worse astroturfing IMO. It's incredible feedback for bots and trolls to see exactly who is interacting with their posts and comments. It's frustrating that a bunch of people here have convinced themselves of the opposite, and insist that public voting is the only way to combat brigades and trolls, which is an incredibly shortsighted stance which doesn't scale nearly as well as it does in the other direction.

[–] TriflingToad@sh.itjust.works 13 points 2 days ago

iirc someone got banned from like 25 subs because they downvoted a single post that said "I want YOU to generate more AI slop" and the mod got pissed and power tripped super hard

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[–] Luci@lemmy.ca 17 points 2 days ago

I’ll downvote everyone here if I damn well please it!!!

[–] Vanilla_PuddinFudge@infosec.pub 22 points 2 days ago (15 children)
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Freedom is a luxury and anonymity is a crime. After all, how can any slave think to hide his intentions from his masters?

[–] discosnails@lemmy.wtf 8 points 2 days ago

I was unaware that it was unclear to anyone but children and the intellectually behind that anything you do on the Internet is traceable to you without significant countermeasures.

[–] jeena@piefed.jeena.net 179 points 4 days ago (84 children)

Why is public voting a massive privacy and physical threat but public posting and commenting is not?

[–] Azzu@lemmy.dbzer0.com 83 points 4 days ago* (last edited 4 days ago) (36 children)

Would be my question as well. It seems quite obvious that if you participate in publicly viewable discussion, that the stuff you do is publicly viewable.

If you don't want it associated to your physical person, use a VPN and unidentifiable account name.

(And the statement "at least reddit is safe" seems absolutely ridiculous to me.)

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[–] Xylight@lemdro.id 22 points 3 days ago (1 children)

If you're an instance admin, for any post, you can just click "view votes" and see everything tied to usernames, even outside your own instance. Moderators can too, but it's restricted to the communities they moderate.

[–] moseschrute@lemmy.zip 9 points 2 days ago* (last edited 2 days ago) (1 children)

So if a bad actor wanted to get aces to vote data, they could setup and instance and have it federate with any instance they want to extract voting data from?

[–] Xylight@lemdro.id 10 points 2 days ago

Yes, it's very simple too. You don't even need to extract anything from a database or do some complicated stuff. As an admin you have free access to all moderation tools no matter where the post is from, including the option to "view votes".

[–] TrickDacy@lemmy.world 97 points 4 days ago (11 children)

Why are you saying IP addresses are publicly shown here and why is (almost) no one correcting you? That would've been an enormous privacy risk that would've required intentionally fucking users over. Just doesn't even make sense to write what you did about IP addresses. Seems like you're just hoping to cause some panic.

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[–] Wispy2891@lemmy.world 32 points 3 days ago* (last edited 3 days ago) (1 children)

The IP address thing is not real, though

Just choose a nickname that is random word+4 random digits and don't reuse it on other services

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[–] gazby@lemmy.zip 32 points 3 days ago (1 children)

Sir, this is the Fediverse.

[–] npdean@lemmy.today 15 points 3 days ago (9 children)

It is nowhere explicitly made clear to users that voting is public. It should be made clear if it is going to be

[–] gazby@lemmy.zip 13 points 3 days ago (3 children)

It's the other way around here: Everything is public except where it's made clear that it won't be (e.g. email address, password).

For what it's worth, your instance of choice is particularly negligent in regard to informing its users. Compare lemmy.today/legal to lemmy.world/legal, or their respective signup pages for examples. There's little that Lemmy itself or the community at large can do about that 😞

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[–] daniskarma@lemmy.dbzer0.com 65 points 4 days ago (17 children)

Don't tell anyone, but your posts and comments are also public.

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[–] Smeagol666@crazypeople.online 22 points 3 days ago (5 children)

Are you sure about that? Reddit is a fucking cesspool.

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