transparency (n)~ A security model that helps developers write and deploy secure libraries and applications by isolating code depending on privilege. Level 1 transparency was introduced in the .NET Framework version 2.0. It enables developers to annotate code to declare which types and members can perform security elevations and other trusted actions (security-critical) and which cannot (security-transparent). Level 2 transparency which was introduced in the .NET Framework 4 refines this model. It adds a third group of code security-safe-critical code which are types or members that access secure resources and can be safely used by partially-trusted code in the .NET Framework. transparent (adj)~ In computer use of pertaining to or characteristic of a device function or part of a program that works so smoothly and easily that it is invisible to the user. For example the ability of one application to use files created by another is transparent if the user encounters no difficulty in opening reading or using the second program’s files or does not even know the use is occurring.