Patent ID: 7529932

Claim:
A method of a computer system controlling writing of data to a removable medium, said method comprising: communicating a unique identification (ID) of the removable medium to said computer system, said computer system connected to a network and comprising: a network interface for connecting said computer system to a security server via said network, said security server having at least three security levels and comprising: a first map for categorizing a file name pattern of data files with respect to one of said security levels; and a second map for categorizing said removable medium with respect to one of said security levels; a processor for running computing instructions of said computer system; a user interface connected to an input and screen device for allowing a user to interact with said computer system; a Random Access Memory (RAM) for storing data and instructions; at least one Input/Output (IO) Interface for connecting one of a plurality of storage devices and a plurality of network devices; and a removable media interface for connecting said removable media to said computer system; intercepting a write operation to the removable medium; communicating with said security server via said network interface and said network; sending the unique ID of the removable medium along with a list of data files being written; and determining if the data files are allowed to be written to the removable medium using said security server, said determining comprising: determining a security level of said data files; determining a security level of the removable medium based on said unique ID; determining if the security level of the data files is higher than the security level of the removable medium; and sending a message to said computer system via the network and instructing said computer system to allow or prevent writing the data files, wherein said data files are allowed to be written to said removable medium if the security level of said data files is equal or lower than the security level of the removable medium, and wherein said data files are prevented from being written to said removable medium if the security level of said data files is higher than the security level of the removable medium.