What type of software is often considered secured and validated via community knowledge?

Proprietary software is secured and validated internally by its vendor, with its source code typically kept confidential, not by community knowledge.

Object-oriented refers to a programming paradigm, not a type of software distribution or security validation method.

Open-source software's code is publicly available, allowing a vast community of developers and security researchers to inspect it for vulnerabilities and contribute fixes, thereby validating its security through widespread community knowledge and transparency.

Scripting refers to the use of scripting languages, which can be open source or proprietary, and does not inherently imply community validation for security.