System and method for keyword searching using both static and dynamic dictionaries

Apparatus, comprising:

• a network interface;
• and
• one or more processors, configured to analyze communication traffic in a network to determine if keywords occur in the communication traffic and to:
• during the recompilation of a static dictionary, wherein the static dictionary, which is represented by a data structure stored in computer memory:
• receive one or more keywords during the recompilation;
• add the one or more keywords to both a first dynamic dictionary and a second dynamic dictionary, each of which is represented by a respective data structure stored in the computer memory;
• and
• search input data received via the network interface using both the first dynamic dictionary and the static dictionary;
• and
• following the recompilation, search input data received via the network interface using both the second dynamic dictionary and the static dictionary.

A computer software product comprising a tangible non-transitory computer-readable medium in which program instructions are stored, which instructions, when read by one or more processors, cause the processors to analyze communication traffic in a network to determine if keywords occur in the communication traffic and to:

• during a recompilation of a static dictionary which is represented by a data structure stored in computer memory:
• receive one or more keywords during the recompilation;
• add the one or more keywords to both a first dynamic dictionary and a second dynamic dictionary, each of which is represented by a respective data structure stored in the computer memory;
• and
• search input data using both the first dynamic dictionary and the static dictionary;
• and
• following the recompilation, search input data from the network using both the second dynamic dictionary and the static dictionary.