secondpass

secondpass is a term that lacks a single, universally accepted definition in technology. Instead, it is used as a broad label for a second stage or layer that follows an initial pass in various processes, including security, data processing, and software development.

In information security, a second passphrase or second pass is an additional secret that accompanies a primary password to strengthen authentication or protect encrypted data. It is intended to provide defense in depth and is typically managed separately from the primary credentials, reducing the risk of credential compromise.

In computing and programming, second passes appear in two-pass approaches such as compilers and data analyzers. The first pass often gathers structural information, while the second pass resolves names, types, or generates code. This separation can simplify design and handle forward references that arise during parsing.

The exact meaning of secondpass can vary by project or context, and some software labels use the name as branding rather than as a standardized concept. When encountered, consulting the specific documentation is necessary to determine the term's precise role.

Related concepts include passphrase, two-factor authentication, two-pass compilers, and multi-step verification.