Many "index of" directories are deliberately left open by security researchers or law enforcement to catch scrapers. Downloading a file from a suspicious index logs your IP address and user agent.
To understand the "Index of the Illusionist Link" is to learn how to deconstruct the illusions around us. Critical Skepticism index of the illusionist link
: A sword that remains stuck in the floor, seemingly immovable by anyone but the illusionist. Many "index of" directories are deliberately left open