List of steps to reproduce (step by step, including full links if applicable):
- Go to Indonesian Wikibooks and check the edit history, https://id.wikibooks.org/w/index.php?title=Halaman_Utama&action=history
- In 4 Mei 2022 02.31 BrockArmour1814 and in 22 September 2021 03.29 JewellTanaka479 vandalized the home page, although it has been semi-protected for autoconfirmed users only
- Both vandals only has that one edit, so they're not autoconfirmed users.
What happens?:
A user asked me to revert this vandalism, because they couldn't revert it themselves, since it was protected page. I felt that was weird that the vandals managed to breach to protection, and vandalized the main page.
What should have happened instead?:
When a page is protected or semi-protected, especially the main page, the vandals and spammers shouldn't be able to edit and vandalized it.
Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc.: