Limiting execution of software programs

A method comprising:

• generating a configuration file comprising one or more constructs predetermined to be unsafe for execution as identified by a user;
• extracting a first set of program code from a second set of program code;
• parsing the extracted first set of program code to generate a parsed structure;
• examining the parsed structure generated from the first set of program code for one or more expressions that use at least one of the one or more constructs predetermined to be unsafe for execution, wherein the examining step further comprises providing a looping guard to verify if the entire first set of program code has been examined;
• detecting the one or more expressions that use at least one of the one or more constructs predetermined to be unsafe for execution that are contained in the first set of program code, wherein the detecting step further comprises flagging each of the one or more expressions that use at least one of the one or more constructs predetermined to be unsafe for execution that are contained in the first set of program code;
• and
• generating an unsafe-expression flagged version of the first set of program code for editing by a user;
• wherein the extracting, parsing, examining, detecting and generating steps are performed in accordance with a processor device.