This refers to a specific user or channel administrator on Telegram. Accounts with these naming conventions are often used to aggregate and distribute various types of media or software.
This typically functions as a cataloging or serial number used by the uploader to organize their database of shared files. Security and Safety Risks (@kingnudz) VD157rar
This is a Roshal Archive file used for data compression and archiving. It requires specific software to extract the contents. This refers to a specific user or channel