Network communication devices and file tracking methods thereof

A network communication device, comprising:

• a communication module, configured to provide network access to a cloud server storing at least one electronic file;
• a storage module, configured to store program code of an operating system and a file tracking system, and store the electronic file in sync with the cloud server;
• and
• a processing unit, configured to load and execute the program code to enable operations of the operating system and the file tracking system,
• wherein the operations of the operating system comprise:
• generating a plurality of first file-modification messages corresponding to a plurality of first events in response to the electronic file in the storage module being moved, and
• wherein the operations of the file tracking system comprise:
• obtaining a plurality of file features and a Globally Unique Identification (GUID) for each of the first events according to the corresponding first file-modification message, determining correlations between the first events according to the obtained file features and GUIDs, and determining whether to notify the cloud server via the communication module to update a file path of the electronic file in the cloud server with a move event according to the determined correlations.