Patent ID: 8769663

Claim:
A method of detecting a content desired to be detected, comprising: receiving electronic data intended for a user station at a first host, the first host responsible for receiving electronic data and passing the electronic data to the user station to which the electronic data is intended; prior to receiving a whole of the electronic data at the first host, determining a checksum value upon and at the time of receipt of each incremental portion of received electronic data on the first host using all and actual incremental portions of the received electronic data, each checksum value determined from all data of previously received incremental portions of electronic data and data of a respective newly received incremental portion of electronic data; sending each checksum value from the first host to a processing station as the incremental portions of electronic data are received and the checksums value are determined, the processing station being a second host that is different from the first host; receiving, by the first host, a result from the processing station for each checksum value sent to the processing station, each respective result indicating whether the electronic data is associated with a content desired to be detected; and upon receipt of a second result indicating the electronic data is associated with a content desired to be detected, preventing the electronic data from being sent to the user station to which the electronic data is intended.