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SecureOS Copyright and Attribution

Copyright

SecureOS is Copyright © 2025 Barrer Software. All rights reserved.

License

SecureOS infrastructure code, scripts, and configuration files are released under the MIT License. See LICENSE file for full text.

Trademarks

  • SecureOS - Trademark of Barrer Software
  • Barrer Software - All rights reserved
  • Ubuntu - Registered trademark of Canonical Ltd.
  • Linux - Registered trademark of Linus Torvalds

Third-Party Components

SecureOS is a derivative work based on Ubuntu 24.04 LTS and includes many open source components. Each component retains its original license and copyright:

Base System

  • Ubuntu 24.04 LTS - Copyright Canonical Ltd.
  • Debian GNU/Linux - Copyright Software in the Public Interest, Inc.
  • Linux Kernel - Copyright Linus Torvalds and contributors (GPL v2)

Security Components

  • AppArmor - Copyright Canonical Ltd., Novell, and contributors (GPL v2)
  • UFW (Uncomplicated Firewall) - Copyright Canonical Ltd. (GPL v3)
  • fail2ban - Copyright Cyril Jaquier and contributors (GPL v2)
  • AIDE - Copyright Rami Lehti and contributors (GPL v2)
  • ClamAV - Copyright Cisco Systems, Inc. (GPL v2)

Desktop Environment (Optional)

  • XFCE - Copyright Olivier Fourdan and contributors (GPL v2, LGPL v2)
  • Firefox - Copyright Mozilla Foundation (MPL 2.0)

Server Components

  • nginx - Copyright Igor Sysoev and contributors (2-clause BSD)
  • Apache HTTP Server - Copyright Apache Software Foundation (Apache 2.0)
  • MySQL - Copyright Oracle Corporation (GPL v2)
  • PostgreSQL - Copyright PostgreSQL Global Development Group (PostgreSQL License)
  • WireGuard - Copyright Jason A. Donenfeld (GPL v2)
  • Docker - Copyright Docker, Inc. (Apache 2.0)

Attribution Requirements

When distributing or modifying SecureOS:

  1. Retain Barrer Software copyright notices in all source files
  2. Include the LICENSE file in distributions
  3. Credit Barrer Software in documentation and about dialogs
  4. Maintain Ubuntu trademark notices as required by Canonical
  5. Preserve all third-party copyright notices and licenses

Proper Attribution Examples

In Documentation

SecureOS - A security-enhanced Linux distribution
Copyright © 2025 Barrer Software
Based on Ubuntu 24.04 LTS

In Source Code Headers

#!/bin/bash
# SecureOS - Part of Barrer Software
# Copyright © 2025 Barrer Software
# Licensed under the MIT License

In About Dialogs

SecureOS v3.0.0
Copyright © 2025 Barrer Software

Based on Ubuntu 24.04 LTS
Ubuntu is a registered trademark of Canonical Ltd.

Using the SecureOS Name

The "SecureOS" name and logo are trademarks of Barrer Software.

You may use the SecureOS name to:

  • Refer to the unmodified software
  • Discuss the software in reviews, articles, etc.
  • Indicate compatibility with SecureOS

You must NOT use the SecureOS name to:

  • Distribute modified versions without clear indication of changes
  • Imply official endorsement of modified versions
  • Create confusion about the source of the software

For modified versions, please use a different name such as:

  • "YourDistro (based on SecureOS)"
  • "YourDistro (SecureOS derivative)"

Contributing

By contributing to SecureOS, you agree that your contributions will be licensed under the MIT License and copyright will be assigned to Barrer Software.

All contributions must:

  1. Be your original work or properly licensed
  2. Not infringe on any third-party copyrights or patents
  3. Include appropriate copyright headers
  4. Respect all third-party licenses

Contact

For licensing questions or permissions:

Disclaimer

SecureOS is provided "AS IS" without warranty of any kind. Barrer Software makes no guarantees about the security, stability, or fitness for any particular purpose.

While SecureOS includes many security enhancements, no system is completely secure. Users are responsible for properly configuring and maintaining their systems.

Compliance

SecureOS complies with:

  • Open Source Initiative (OSI) approved licenses
  • Debian Free Software Guidelines (DFSG)
  • Ubuntu licensing requirements
  • GPL, MIT, Apache, and other common FOSS licenses

Updates

This copyright and attribution file may be updated. The current version is always available at: https://github.com/barrersoftware/SecureOS/blob/master/COPYRIGHT.md

Last updated: October 28, 2025