Abstract: Embodiments of the invention provide a method and a system of detecting source code in a message being sent over a digital communication network to secure against unauthorized leakage of source code. The message is intercepted on a network device, placed into a memory on the network device, and divided into one or more segments, wherein each segment includes a predetermined number of lines of text from the message. For each segment, one or more syntax rules of a programming language is applied to the segment and a predetermined number of context lines of text before the segment and/or after the segment, to determine which of the syntax rules of the programming language are matched in the segment. A determination of whether the text message includes source code is provided based on the syntax rules that were matched.

Abstract: A method and a system for preventing transmission of malicious contents are provided. The method includes intercepting at a network gateway device of a server network a digital communication being sent from the server network to an external network; searching the digital communication for a malicious transmission schema that can be used to cause a malicious transmission on a recipient of the digital communication; and taking an action to hinder the transmission of malicious contents if a malicious transmission schema is found.