- Discussions on whether the WMF is complying with data protection laws, and information on the use, transfer and retention of CheckUser data
- In-depth discussion: User_talk:Iridescent/Archive_44#Aside-to-an-aside_about_data_retention_and_data_transfer
- Info from arbs/CU: User:Only_in_death/sandbox
- Questions: Wikipedia_talk:Arbitration_Committee/Noticeboard/Archive_47#Questions_to_Committee_on_data_handling_procedures
- Info from stewards/CUs/Ombuds: meta:Requests for comment/Ombuds Commission inactivity
- CUing of every ArbCom voter => permanent storage of the IP data of a decent portion of the active editor userbase. [1]
- IP masking
- Why IPs should be masked, answers courtesy of a European privacy lawyer: m:Talk:IP_Editing:_Privacy_Enhancement_and_Abuse_Mitigation#Legal_basis_for_processing_IPs
