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Open Cybersecurity Schema Framework


The Open Cybersecurity Schema Framework is an open-source project, delivering an extensible framework for developing schemas, along with a vendor-agnostic core security schema. Vendors and other data producers can adopt and extend the schema for their specific domains. Data engineers can map differing schemas to help security teams simplify data ingestion and normalization, so that data scientists and analysts can work with a common language for threat detection and investigation. The goal is to provide an open standard, adopted in any environment, application, or solution, while complementing existing security standards and processes.


The framework is made up of a set of data types, an attribute dictionary, and the taxonomy. It is not restricted to the cybersecurity domain nor to events, however the initial focus of the framework has been a schema for cybersecurity events. OCSF is agnostic to storage format, data collection and ETL processes. The core schema for cybersecurity events is intended to be agnostic to implementations. The schema framework definition files and the resulting normative schema are written as JSON.

Refer to the white paper Understanding the Open Cybersecurity Schema Framework for an introduction to the framework and schema. A schema browser for the cybersecurity schema can be found at OCSF Schema, where the user can easily navigate the schema, apply profiles and extensions, and browse the attributes, objects and event classes.


We are maintaining a list of FAQs here


OCSF has a Steering Committee and Maintainers in addtion to Contributors. Interested in contributing to the OCSF project? Please check out the documentation on how in the OCSF Contribution Guide file.

List of Contributing Organizations


The project has a Slack workspace where contributors discuss issues and topics. If you would like to be invited to join, send an email to Tell us about interests and introduce yourself to the group after you accept an invite.


OCSF is licensed under the Apache License 2.0. Check out the LICENSE file to understand the requirements to use the artifacts of the project.


  1. governance governance Public

    30 8

  2. ocsf-docs ocsf-docs Public

    OCSF Documentation

    100 15

  3. ocsf-schema ocsf-schema Public

    OCSF Schema

    525 94

  4. ocsf-server ocsf-server Public

    OCSF Schema WEB Server

    Elixir 29 23

  5. examples examples Public

    This repo contains example of raw event examples and possible translations to the OCSF schema.

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