https://en.wikipedia.org/wiki/Streisand_effect

The Streisand effect is an unintended consequence of attempts to hide, remove, or censor information, where the effort instead backfires by increasing awareness of that information. It is named after American singer and actress Barbra Streisand, whose attempt to suppress the California Coastal Records Project’s photograph of her cliff-top residence in Malibu, California, taken to document California coastal erosion, inadvertently drew greater attention to the photograph in 2003.

(I needed a lesson myself)