Final answer:
People who purposely vandalize Wikipedia are called vandals. Vandals are individuals who intentionally make harmful edits to Wikipedia pages. It is important to actively monitor and revert these edits to maintain the reliability of the shared knowledge.
Step-by-step explanation:
People who purposely vandalize Wikipedia are called vandals. Vandals are individuals who intentionally make harmful edits to Wikipedia pages, such as deleting content, adding false information, or defacing articles. These actions can disrupt the integrity and accuracy of the information available on the site.
This type of vandalism is not limited to Wikipedia alone, but also occurs on other wikis and websites that allow user contributions. It is important for the community to actively monitor and revert these edits to maintain the reliability of the shared knowledge.