On one system, 74 user accounts had privileges enabling them to change program source code without supervisory oversight, the report stated.

CNN: Extensive security gaps persist in DOD networks

But they are refusing to allow independent analysis of the program's source code, on the grounds of commercial confidentiality.

BBC: Why e-voting is a non-starter

Its source code a program's basic commands before they are compiled into the binary language of computers is freely available on the Internet.

ECONOMIST: Free software

If the borrowed open-source code is integral to a larger program, that program becomes a "derivative work, " subject to various claims--e.g.

FORBES: Magazine Article

Levin's software scans a given program, looking for strings of code that might be open source, then identifies the licenses that apply.

FORBES: Code Inspector

Every element of the XO's software is open-source and malleable: Its creators hope that kids in Mongolia and Peru will someday program their own applications for the devices and even modify its source code to improve its operating system.

FORBES: Magazine Article

Kerberos gained pre-eminence because it is clever, and because its developers, computer scientists at the Massachusetts Institute of Technology, released the source code, which let security experts around the world debug and refine the program line by line.

ECONOMIST: Microsoft