what is its purpose?
It is used as input to the process that produces an executable program, it is also used as a method of communicating algorithms between people
Source code
Source code is primarily used as input to the process that produces an executable program (i.e., it is compiled or interpreted). It is also used as a method of communicating algorithms between people (e.g., code snippets in books
what is the current version of symantec endpoint protection Version 12.1.2 what does it refers to? It  is a security software suite that consists of anti-malware, intrusion prevention and firewall features for server and desktop computers can you state any one feature of it? In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules is it itself vulnerable at any point? Yes,  source code for Symantec Endpoint Protection was stolen and published online when was it launched? The first release of Symantec Endpoint Protection was published in September 2007 who launched it? UNANSWERABLE you mentioned a particular code was stolen in this regard; what is meant by that code? It is any collection of code, with or without comments, written using a "human-readable" programming language, usually as plain text
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Source code [SEP] Purposes
Source code is primarily used as input to the process that produces an executable program (i.e., it is compiled or interpreted). It is also used as a method of communicating algorithms between people (e.g., code snippets in books). Computer programmers often find it helpful to review existing source code to learn about programming techniques. The sharing of source code between developers is frequently cited as a contributing factor to the maturation of their programming skills. Some people consider source code an expressive artistic medium. Porting software to other computer platforms is usually prohibitively difficult without source code. Without the source code for a particular piece of software, portability is generally computationally expensive.