License¶
Espilon is released under the MIT License. Both the firmware and the ESPM (Espilon Portable Module system) ship with their own LICENSE file carrying the same MIT terms.
At a glance
| Component | License | File |
|---|---|---|
| Firmware | MIT | LICENSE |
| ESPM | MIT | LICENSE |
MIT License¶
MIT License
Copyright (c) 2025 Espilon Project Contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
Responsible use¶
Authorized Use Only
Espilon is a security research and educational tool. Use it only on devices and networks you own or are explicitly authorized in writing to test.
The Espilon project is developed for authorized security research, penetration testing, red team engagements, and education. The MIT license grants broad rights to use, copy, modify, merge, publish, distribute, sublicense, and sell the Software. These rights do not extend to, and do not authorize, any use of the Software that:
- Accesses, intercepts, disrupts, or modifies computer systems, networks, or communications without the explicit written authorization of the owner
- Constitutes unauthorized access under applicable law (including but not limited to the Computer Fraud and Abuse Act (CFAA), the Computer Misuse Act (CMA), EU Directive 2013/40/EU, and equivalent legislation in other jurisdictions)
- Involves surveillance, tracking, or interception of individuals without their knowledge and consent
- Is deployed against vehicles, industrial control systems, or safety-critical infrastructure without a documented, authorized test plan and appropriate safety controls
The authors and contributors of the Espilon project expressly disclaim any liability for use of the Software outside these boundaries. Users are solely responsible for ensuring their use complies with all applicable laws and regulations.
No warranty
As stated in the license text above, the Software is provided "as is", without warranty of any kind. You are solely responsible for how you deploy and operate it.
Third-party components¶
Espilon Firmware, ESPM, and the C3PO control application incorporate open-source components. Their respective licenses apply:
| Component | License |
|---|---|
| ESP-IDF (Espressif Systems) | Apache 2.0 |
| NimBLE (Apache Mynewt) | Apache 2.0 |
| mbedTLS | Apache 2.0 |
| nanoPB | zlib |
| protobuf / grpcio-tools | BSD-3-Clause |
| Qt (PySide6) | LGPL 3.0 |
Refer to each component's upstream repository for the full license text.