Wikipedia:Long-term abuse/Date-changing vandal from Poland

Basic information
Someone using IPs from Poland has been engaging in date-changing vandalism in music articles since early 2018. The person often returns to the same articles, or more rarely, engages in edit-warring after being reverted, for instance multiple times at the "Now You're Gone" song article during 2019–2020.

The IPs below are all blacklisted by at least one anti-spam database.

This person also makes changes to dates on Polish Wikipedia. Sometimes these are at different times relative to English Wikipedia, and sometimes they are right next to each other, consistently changing to the same wrong date:
 * Example 1:
 * Example 2:
 * Example 3:

The vandal registered a username in November 2020, the same date-changing disruption first occurring in Polish language Wikipedia then in English.

Other registered usernames include:
 * (it.wiki)
 * (it.wiki)
 * (it.wiki)
 * (it.wiki)
 * (it.wiki)
 * (it.wiki)
 * (it.wiki)
 * (it.wiki)

Noticeboard discussions

 * Mar 2020 – Administrators' noticeboard/IncidentArchive1033
 * Aug 2020 – Administrators' noticeboard/IncidentArchive1045
 * Nov 2020 – Administrators' noticeboard/IncidentArchive1052
 * Nov 2020 – "New user, new activity in the Poland date-changing vandal case"

Rangeblocks

 * Apr 2020 – was blocked for 1 month.
 * Aug 2020 – was blocked for 3 months.
 * Aug 2020 – was blocked for 3 months.
 * Aug 2020 – was blocked for 3 months.
 * Nov 2020 – was blocked for 1 year.
 * Jan 2022 – was blocked for 1 month.
 * Nov 2022 – blocked 3 years.

Involved IPs and users

 * 2024
 * June -
 * May - (blocked for 1 week)
 * May - (blocked indef)
 * Apr -
 * Apr - (blocked indef)
 * Mar - (blocked indef)
 * Mar -
 * Jan -
 * Jan - (blocked indef)
 * Jan - (blocked indef)
 * Jan - (blocked for 1 week)
 * Jan – (blocked for 1 month)
 * 2023
 * Dec – (blocked 60 hrs; /24 range blocked 3 months on pl-WP since Oct '23)
 * Aug – (blocked for 1 month)
 * 2022
 * Nov – (blocked for a month)
 * May – (blocked six times since April 2021; current block 2 years)
 * Feb –
 * Feb –
 * Jan –
 * Jan – (blocked for 1 month)
 * Jan –
 * 2021
 * Oct – (blocked for 1 month)
 * Sep – (blocked for a looong time on fr-WP)
 * Sep –
 * Sep – (blocked 2 weeks)
 * Jul – (blocked twice)
 * Jul – (blocked for 60 hrs)
 * May – (blocked 3 months)
 * Apr – (blocked 2 weeks)
 * Mar – (blocked 24 hrs)
 * Mar –
 * 2020
 * Dec – (blocked for 72 hrs)
 * Dec –
 * Nov – (blocked for 31 hrs)
 * Nov –
 * Nov –
 * Aug –
 * Aug – (blocked for 31 hrs)
 * Aug – (blocked for 36 hrs)
 * Aug – (blocked for 36 hrs)
 * Aug – (blocked for 31 hrs)
 * Aug – (blocked for 2 weeks)
 * Aug – (blocked for 36 hrs)
 * Aug – (blocked for 2 weeks)
 * Jul –
 * Jul –
 * Jul – (blocked for 72 hrs)
 * Jul –
 * Jul – (blocked for 31 hrs)
 * Jul – (blocked for 1 month)
 * Jul – (blocked for 31 hrs)
 * Jul – (blocked for 1 week)
 * Jul –
 * Jul –
 * Jul –
 * Jul – (blocked for 31 hrs)
 * Jul –
 * Jul – (blocked for 31 hrs)
 * Jul –
 * Jul – (blocked 60 hrs)
 * Jul – (blocked for 31 hrs)
 * Jul –
 * Jul – (blocked for 31 hrs)
 * Jul – (blocked 60 hrs)
 * Jul – (blocked twice)
 * Jul – (blocked 60 hrs)
 * Jul –
 * Jul – (blocked twice)
 * Jun – (blocked 60 hrs)
 * Jun – (blocked for 1 week)
 * Jun – (blocked for 2 weeks)
 * Jun – (blocked for 72 hrs)
 * Jun – (blocked for 31 hrs)
 * Jun –
 * Jun –
 * Jun –
 * Jun – (blocked for 2 weeks)
 * May – (blocked for 1 week)
 * May –
 * May –
 * May – (blocked for 1 week)
 * May –
 * Apr –
 * Apr –
 * Apr – (blocked 4 times)
 * Apr – (blocked for 31 hrs)
 * Apr – (blocked for 31 hrs)
 * Apr – (blocked for 1 week)
 * Apr –
 * Apr –
 * Mar –
 * Mar –
 * Mar – (blocked twice)
 * Mar –
 * Mar –
 * Mar – (blocked 48 hrs)
 * Mar – (blocked for 31 hrs)
 * Mar –
 * Mar –
 * Mar –
 * Feb –
 * Feb –
 * Feb – (blocked for 31 hrs)
 * Feb –
 * Feb –
 * Feb –
 * Jan –
 * Jan –
 * Jan –
 * Jan –
 * Jan –
 * Jan –
 * Jan –
 * Jan –
 * 2019
 * Nov –
 * Jul –
 * Jun –
 * Jun – (blocked twice)
 * Jun –
 * Jun –
 * Jun –
 * Jun – (blocked twice)
 * Jun –
 * May –
 * May –
 * May –
 * May –
 * May –
 * May – (blocked for 1 week)
 * May –
 * May –
 * Apr –
 * Apr –
 * Apr –
 * Apr –
 * Apr –
 * Apr –
 * Apr – (blocked 60 hrs)
 * Apr –
 * Apr –
 * Apr –
 * Mar –
 * Mar –
 * Mar –
 * Mar –
 * Mar –
 * Mar –
 * Mar –
 * Feb –
 * Feb –
 * Feb –
 * Feb –
 * Feb –
 * Feb –
 * Jan –
 * Jan –
 * Jan –
 * Jan –
 * Jan –
 * 2018
 * Dec –
 * Dec – (blocked 5 times)
 * Nov –
 * Sep –
 * Aug –
 * Jul –
 * Jul –
 * Jul –
 * Jul –

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