EPUBs can expose your devices and personal data to several threats: Malware Injection

Searching for e-books through queries like "intitle index of epub outlander top" raises several issues:

Outlander was published in 1991, so it won’t enter the public domain for decades. Beware of any site offering a free “public domain” EPUB—it’s likely pirated.

—unprotected web servers that list files for direct download. While often used to find free ebooks, this method bypasses legitimate creators and carries significant security risks. The Dangers of Open Directory Downloads Using open directories to find files like

Pirated EPUBs often have broken CSS, missing chapters, or "scannos" (optical character recognition errors) that ruin the reading experience.

If the "index of" results are broken or low-quality, these platforms often provide access to the series for free or through library memberships: