Explore the critical importance of file format preservation and security in this 44-minute conference talk. Delve into the reasons why caring for file formats matters, examine the potential attack surface, and understand the universality of file format issues. Discover the security challenges associated with various formats, including PGM and epub. Learn why fixing these problems is increasingly difficult as the issue continues to grow. Gain insights into the work of preservation bureaus and the implications for popular e-book formats like Kindle. Conclude with a humorous look at polyglot files and their unique properties.