Vandalism is any addition, removal, or change of content, in a deliberate attempt to compromise the integrity of MicroWiki. Examples of typical vandalism are adding irrelevant obscenities and crude humor to a page, illegitimately blanking pages, and inserting obvious nonsense into a page. Abusive creation or usage of user accounts may also constitute vandalism.

Vandalism is prohibited. While editors are encouraged to warn and educate vandals, warnings are by no means necessary for an administrator to block.

Any good-faith effort to improve the encyclopedia is not vandalism. Edit warring over content is not vandalism. Careful consideration may be required to differentiate between edits that are beneficial, detrimental but well-intentioned, and vandalizing. Mislabeling good-faith edits as vandalism can be considered harmful.

Upon their discovery, revert clearly vandalizing edits. Then warn the vandalizing editor. Notify administrators, and administrators should intervene to protect content and prevent further disruption by blocking such users from editing. When warranted, accounts whose main or only use is obvious vandalism or other forbidden activity may be blocked even without warning.

How to spot vandalism

Very useful ways to detect vandalism include:

  • Recent changes patrolling, using the recent changes link to spot suspicious edits
  • Keeping an eye on your watchlist
  • The edit history of an article may be checked for any recent suspicious edits, and compared with the version after any previous revert or cluster of non-suspicious edits. This method can check many suspicious edits at the same time. The article size, as given in bytes, usually increases slightly with time, while a sudden large decrease may indicate a section blanking.

How to respond to vandalism

If you see vandalism in an article, the simplest thing to do is just to remove it. But take care! Sometimes vandalism takes place on top of older, undetected vandalism. With undetected vandalism, editors may make edits without realizing the vandalism occurred. This can make it harder to detect and delete the vandalism, which is now hidden among other edits. Sometimes bots try to fix collateral damage and accidentally make things worse. Check the edit history to make sure you're reverting to a "clean" version of the page. Alternatively, if you can't tell where the best place is, take your best guess and leave a note on the article's talk page so that someone more familiar with the page can address the issue—or you can manually remove the vandalism without reverting it.

If you see vandalism on a list of changes (such as your watchlist), then revert it immediately. You may use the "undo" button (and the automatic edit summary it generates), and mark the change as minor. It may be helpful to check the page history to determine whether other recent edits by the same or other editors also represent vandalism. Repair all vandalism you can identify.

For a new article, if all versions of the article are pure vandalism, mark it for deletion by tagging it with {{deletion|reason=Vandalism article}}