A cef file extension is related to the SanDisk CruzerLock an encryption tool. A cef file stores encrypted data.
CEF file extension - SanDisk CruzerLock encrypted data
What is cef file? How to open cef files?
File type specification:
The cef file extension is associated with SanDisk CruzerLock application for file encryption that allows users to protect their case sensitive data.
The cef file stores encrypted data.
SanDisk CruzerLock was distributed with SanDisk USB disks. It is obsolete product.
This cef file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.