For new users...serial down-voting is strictly discouraged.

It requires a certain amount of venom and dedication to go through another user's list of questions and answers and then methodically DV as many as they can find. I am not sure of the consequences for the DVer, and I would like to know what site policy is regarding these (ab)users.

In the latest violation of this site policy, someone got pissed off enough to DV at least 28 of my posts. They were of course reversed the next day without my even being aware of it...

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Maybe I pissed someone off enough that they felt this passive-aggressive attack was cute. Instead, it created more work for the site.

If I have angered some other user so much that they felt that this was their best recourse, I am saying that I would like to iron this out in a better way.

Failing the honest taking of the proffered olive branch, I would like to know who it was so that we can talk about it in a reasonable manner without violating site policy.

Is there some way I can discover who is mounting this attack on me?

  • 3
    Even after the serial DV reversal, it continues. Jan 7, 2021 at 19:30
  • 3
    I don’t think you are told who the serial down-voter is by mods. Why would you like to know? Would that be helpful?
    – user 66974
    Jan 7, 2021 at 19:35
  • 3
    I would like to try and work it out in a reasonable manner. @user66974 Perhaps we could discover some kind of meeting point... Jan 7, 2021 at 19:36
  • 5
    Maybe you could, but probably a suspension by mods, if DVs continues, would be more effective.
    – user 66974
    Jan 7, 2021 at 19:39
  • 4
    @user66974 Since I am a stakeholder, I am looking for more transparency in the process...I am not sure that suspension is the best way to go. It sounds like a drastic resolution of a dispute which could have been resolved with better communication. Jan 7, 2021 at 19:40
  • 5
    Confrontations are not encouraged, anyway let’s see what other users suggest.
    – user 66974
    Jan 7, 2021 at 19:44
  • 6
    Voting is anonymous so it doesn't elicit recrimination. But then that leads to anonymous multiple downloads. The first recourse is the automated serial voting reversal. Further recourse is here or a message to mods. Most people would be (rightly) pissed off at a serial downvoter so probably best to let a mod handle it.
    – Mitch
    Jan 7, 2021 at 22:29
  • 4
    I have experienced that a few times. After a DV on one answer or question, sudden DVs would come on other posts of mine, even old ones. But your case is rather serious. It is good you brought it up.
    – fev
    Jan 8, 2021 at 16:56
  • 10
    I respect you and admire your sincerity, Cascabel, but I think that Stack Exchange's policy of hiding the identity of people who go off on other site participants in unacceptable ways is wise precisely because many people subjected to the same petty hostility that you have just endured would not respond to it as maturely and constructively as you have. If the serial downvoter were interested in resolving whatever disagreement prompted that action, the person could contact you directly. By failing to do so, the downvoter shows no interest in pursuing such resolution. I would let it go at that.
    – Sven Yargs
    Jan 8, 2021 at 20:53
  • 4
    Do not feed the troll. And you're asking to have lunch with them. If you had a suspect, maybe you could do some digging and confirm a reasonable suspicion, but ultimately, no, and don't - because the first rule is to disengage.
    – Mazura
    Jan 15, 2021 at 1:11
  • @Mazura As Shrek said, "Can't we just settle this over a pint?"...but of course that had disastrous consequences.... Jan 20, 2021 at 17:59
  • 3
    Should we move this to meta.stackexchange.com, as opposed to english.meta... specifically? Jan 21, 2021 at 18:31
  • 1
    @Panzercrisis For the last couple of days I have been thinking the same...but I am just a noob there amongst a whole lot of power players; I think I would be a little shy Jan 21, 2021 at 18:36

3 Answers 3


No. Voting is private, although details are logged in the database. Access to the details of that data is restricted to staff. Even if you undertake your own detective work and try to see if your rep changes are matched by rep changes on another user [since downvotes on answers cost you 2 points and the voter 1 point], that's a lot of work and is unreliable — because the system is designed to make it very difficult. Don't do that.

As you can see, the system has various built-in safeguards which can trap this targeting and reverse it. (Targeted voting is aimed at a user rather than what they post. It can be downvoting as here, presumably in revenge for something; or upvotes as a favour. Both directions can be caught and corrected by the system.)

Moderators have access to very limited information, and cannot correct anything. However, if the system doesn't deal with it (as it has here), then we are able to nudge it upstairs for staff to deal with.

Targeted voting isn't allowed, and if it does become obvious then users who do that will receive a message and can be suspended. Please don't take matters into your own hands: let the system deal with it, and if it continues and isn't corrected after a couple of days, let moderators know so they can take an initial look. You can do that in chat, or by raising a flag on one of the posts which has suffered.

In this case, the system has done exactly what it's designed to do and undone any harm.

Further information is on MSE, since it's a network-wide phenomenon (and handled identically by the system on every site):

  • If there are some users doing "targeted voting" from time-to-time, does this go down in that user's history? Does this get expunged after a while? Jan 7, 2021 at 21:53
  • 1
    While it's possible to completely redact data from a post's edit history, nothing else can be entirely expunged, as far as I'm aware. I've edited my answer with links to more details.
    – Andrew Leach Mod
    Jan 7, 2021 at 23:04
  • 1
    @ "your rep changes are matched by rep changes on another user [since downvotes on answers cost you 2 points and the voter 1 point]" - I have, in the past, been falsely accused of downvotes by people who fancied themselves as "detectives", when I had just downvoted someone else altogether. Jan 10, 2021 at 16:37

Others have responded to the core of your question, i.e. (how) can you find out who is serially downvoting you. I thought a slightly broader perspective might also be useful.

It's worth noting that SE uses algorithms to detect suspicious voting activity, which doesn't just include serial downvoting, but also serial upvoting. The underlying principle is that posts should receive votes based on their usefulness (or lack thereof) rather than on the identity of the poster. Serial voting of any kind is not only unfair, it undermines the integrity of the site.

Some serial voting can be somewhat innocent, committed in ignorance of the algorithm and lacking insight into how their activity is unfair. For instance, an inexperienced user might like another user's post, and upvotes it; they click on the username to read their profile, and they discover that the profile page lists other posts by that user. They click on some of these posts, like what they read, and upvote these posts too. It's an innocent act, and if it's only a couple of posts voted on then it's harmless enough. But if they upvote (say) a dozen posts by that user, this is giving that user an unfair boost in votes; thankfully, the algorithm is likely to identify this as serial voting and will automatically reverse the votes.

Of course it can also happen somewhat innocently with downvotes. For example, I might notice that a particular user has been posting ignorant, misinformed and incorrect answers. "Who IS this obnoxious person?" I ask; I look up their profile, and look through their recent posts, which only confirms my view about them, as I DV more of their answers. The point is that even if I'm assessing each of their posts on its merits, the fact that I'm selecting just their posts for review means I'm serially voting, and if the combination of the pattern of my voting and the number of votes cast meets the algorithm's parameters, it will automatically reverse those votes.

It's also worth noting that the system does NOT alert the mods when it identifies suspicious voting behaviour and reverses a user's votes. I know this because two years ago I became concerned about a particular user whose poor (and in some cases, glaringly ignorant) answers were consistently receiving many times the number of votes that my own awesome answers were getting, and when I looked at their posting timeline in their profile I could see not only that there was an obvious pattern to the significant upvotes they were receiving (which regularly exceeded 100 rep points a day), but there had been several very large voting reversals in the last six months. I could also see that there were several occasions where serial voting was clearly occurring but wasn't enough to have triggered a system response.

I don't know whether the user had created fake accounts, or was using the keys to the legit accounts of other household members, but the upvoting was too concentrated to have been from a more innocent cause such as in response to them tweeting their answer. They were clearly cheating. But looking at the size of some of the reversals - 500 rep points or more! - I was amazed that the user hadn't been suspended. I learnt that I had to flag one of the user's posts and alert the mods to my concerns. I'm pleased to say that when the activity continued, the user ended up being suspended for a year.

The point is that (a) mods aren't alerted when the system picks up serial voting and reverses the votes, (b) the system doesn't pick up "less egregious" serial voting, (c) mods can and will take action if you alert them to obvious serial voting (although if you can't identify the user, their only recourse is to refer it "upstairs" to staff), and (d) if a user knows about the system algorithm and genuinely wants to target you, it's not too hard for them to structure their serial downvoting (or, indeed, upvoting) so that it flies below the system's radar and cannot be detected.

Apart from flagging your concerns to the mods, the best defence against serial voting is for all of us to vote vote vote. If all useful posts are receiving plenty of upvotes, then on any individual post a single DV from an antagonist will be lost in the wash.

  • 2
    Such miserable ad hominem behaviour is despicable. I shall try to take your advice to vote more so as to help drown out the mean minds.
    – Anton
    Jan 9, 2021 at 14:37
  • The serial mechanisms of SE are elementary and half-assed. For smaller sites that get fewer views usually there is a mob of friends that control the voting yet that isn't serial? There are several SE sites like this and it is very normal for a user's answer to get bombed by the mob and then someone in the mob answers very similar and then lots of upvotes by mobs - the mobs usually include the mod(s) from that site. It is a fatal flaw of SE and answering that SE tech takes care of issue is ignorant. Jan 13, 2021 at 17:12
  • @RyeɃreḁd answering that SE tech takes care of issue is ignorant I don't like the tone of your comment, and it's certainly not consistent with the "be nice" principle. You should re-read my answer, as I make it quite clear that SE tech does not capture all serial voting. Also, your reference to "smaller sites" is misplaced: EL&U is one of the largest SE sites. Jan 15, 2021 at 23:20
  • I was trying to be mean - I read your answer and a lot of it you make really bad assumptions because you don't know how things work, ignorant wasn't being mean, it was just a statement. Also another assumption you made was thinking I think ELU is a small SE site. Yes I gave an example and yes you took the example to mean something it wasn't. Jan 16, 2021 at 6:39

Yes. If someone is serial downvoting it means they should see a rise in their points. Now I believe there is a systemic way SE handles a habitual serial voter - whether up or down - that does not revert point back to the serial voter. So this may not work for someone serious about their serialness.

Now the person that does not get their points given back should in theory face some sort of suspension so you could scan the active user list to see if anyone got suspended - it could be just on the SE site in question. These methods aren't foolproof and have to be done quickly but gives you a decent chance to figure it out.

(Also if you get a mod that will tell you - I have had a couple let me know before which I understand they are not supposed to)

  • 8
    Trying to deduce who's done what from reputation changes is incredibly unreliable because the system is designed to make it difficult. You can try, but making decisions based on what you find is more likely to be wrong than right. It's a waste of effort.
    – Andrew Leach Mod
    Jan 9, 2021 at 13:36
  • 2
    TXS @ Rye I agree with @AndrewLeach It is not profitable to seek out the (ab)user. ...not my DV Jan 9, 2021 at 22:21
  • 3
    Also if you get a mod that will tell you - I have had a couple let me know before which I understand they are not supposed to - this absolutely should not happen. Jan 13, 2021 at 13:38
  • 3
    These methods aren't foolproof and have to be done quickly - advice of this type is irresponsible, stupid, and likely to lead people into error. Jan 13, 2021 at 13:40
  • @MichaelHarvey - I have found 3 people using this method, one from this site. I have tried maybe 7-10 times to find a serial downvoter - to me it is more fun to find the person than anything... like I care who serial downvotes me on some fake points on SE hahahaha. It isn't foolproof and there are extra tips (I won't divulge as I don't want to give SE devs opportunity to close loopholes) but it is something that can work and the other answers give no chance. Jan 13, 2021 at 17:13
  • @AndrewLeach - not so. There are other mechanisms I didn't divulge that help gain clues. It isn't foolproof but if you see these things you have your person and if you don't, you don't know. It isn't like you are accusing an innocent person. Sometimes you think you know more than you do right? Jan 13, 2021 at 17:17

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