JavaSoft JRE 1.3 library security data
File type: Various data file
Files with security file extension contain security data used by the JavaSoft Java Runtime Environment (JRE) 1.3.
This security file is a library file for the Java runtime, not a general-purpose document.
File type category:
Various data file
Date updated: October 12, 2026
The security file extension is associated with Java, the programming language and runtime environment originally developed by JavaSoft and Sun Microsystems and now maintained by Oracle. Java is available on multiple platforms, and the related Java Development Kit (JDK) includes the tools and runtime components needed to develop and run Java applications.
The security file contains JavaSoft JRE 1.3 library security data. The Java runtime uses this data as part of its security-related operation, alongside the other files in its installation. This is a legacy format associated with JRE 1.3 rather than a current general-purpose data format.
A security file is intended to be read by the JavaSoft JRE 1.3 installation that uses it. It is not normally opened directly by a user.
On supported platforms, install or use the corresponding Java runtime or JDK and leave the file in its original library location. Opening or changing it with a text editor may prevent the runtime from using its security data correctly.
There is no standard conversion for this JavaSoft JRE 1.3 library security data. The file is an internal runtime resource, not a document intended for export to another format.
To use the data with another Java installation, retain the file as part of the appropriate JRE or JDK installation rather than converting it.
Software apps that create security files:
Multiplatform
Software applications that handle other tasks involving security files:
Multiplatform
Language