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please, edit out slurs from your post - there is no need to repeat whatever was posted this time by this vandal
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you can follow Browser cache - OpenStreetMap Wiki
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see The "OSM Standard tile layer" looks wrong (white lines, abusive comments etc.) - #12 by SomeoneElse (this vandal become active again, edits are reverted but various cache needs to be updated)
To answer question: yes, there was a vandal attack. Whether it counts as “hacked”? Not really, though definitional game does not change much.