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Is there an automatic downvote spree detection on SuperUser? I just got a notification that I've gotten downvotes on my answers and quite interestingly they're all at the same time period and for different questions. I assume it's a single person trying to make me feel bad, for whatever reason.

-2 12 hours ago downvote Switching boot disk, have mirrored drives
-2 12 hours ago downvote Why did Windows 8.1 damage the security permissions on a drive from another Windows installation
-2 12 hours ago downvote Computer stuck someone between QWERTY and Dvorak
-2 12 hours ago downvote Can a TV decode audio passed to it from a HDMI port?
-2 12 hours ago downvote What purpose does a modem serve?
-2 12 hours ago downvote Are subnets always contiguous 1s?

There is also one question on SO downvoted at the same time.

Also the interesting thing is that I've been on SU and SO today several times, but only now suddenly these show and it says they happened already 12h ago. Is there some kind of a delay for showing them?

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    heh, there's something going on here. It ought to be rolled back within 24 hours. Else, let me know and I'll get a CM to do what's needed. – Journeyman Geek Dec 10 '15 at 1:02
  • @JourneymanGeek At least four out of the six were already reverted, have to see if the two others also will. Thanks! – Sami Kuhmonen Dec 10 '15 at 6:09
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    FWIW, these kind of “down voting sprees” have calmed down a bit. Don’t know if it’s better moderation or less temperamental users, but about a year ago on some Stack Exchange sites there was a fairly reproducible pattern of (1) do or say something in opposition to someone/something (2) suddenly the posts featured on your profile is down voted. Then 12-24 hours later the issue is reversed. The system works! So hey, all good. But if you ever notice a serial down voting spree and nothing reversing it, flag the posts for moderator attention as a case of serial down voting. – JakeGould Dec 11 '15 at 4:10
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Yes there is, and it's documented in the Help Centre.

https://superuser.com/help/serial-voting-reversed

When a single user continually votes (up or down) on many of your posts within a short period of time, the system considers these votes to be invalid and removes them.

Such votes will generally be invalidated as part of an automated process that runs every day, but may also be invalidated manually by the staff after an investigation. When the votes are invalidated, the reputation gain or loss from the votes is undone, which results in a record in the recipient's reputation history labelled "voting corrected".

What if I think I'm the victim of voting abuse?

If you see very unusual votes being targeted at your account, don't worry about it. You should wait at least 24 hours after noticing before becoming concerned, as the automated system should detect it and reverse it for you. If, after 24 hours, you do not see any fix to your reputation, please contact the team using the "contact us" form located at the bottom of any page.

  • Thanks, was looking with wrong keywords so didn't find this one. – Sami Kuhmonen Dec 10 '15 at 6:10
  • Does this work across sites on the network? How "many" are "many posts"? I have encountered the same problem right now and a user revenge-downvoted after I explained that his answer was not very precise. – Andrea Lazzarotto May 25 '16 at 20:45

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