There will be a wrinkled paper on the first page of the original, and the spine of the book is also curved, and the last page will have the standard of grinding iron for light. The pirated spine has no radian, and there is no anti-counterfeiting page. Genuine books generally have anti-counterfeiting pages, also called anti-piracy pages. You may buy pirated books, so there is no such thing. Anti-counterfeiting pages or anti-theft pages are generally yellow and white.

some books printed in the early days also didn't have security pages, for example, Boundless and Soul Requisition didn't have security pages.