Cordon
Copyright 2026 Cordon Contributors

This product includes software developed by the Cordon Contributors.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed
under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.

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Third-party data

The Cordon engine has no third-party runtime dependencies.

Rule packs and threat-intelligence databases distributed alongside Cordon may
incorporate third-party data under separate terms. Every pack declares its own
`license` and `source` fields, and any pack whose licence is incompatible with
Apache-2.0 is distributed separately rather than bundled with this
distribution.

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Agent Threat Rules

src/cordon_scanner/intel/data/atr-rules.json.gz is derived from the Agent
Threat Rules catalogue (https://github.com/Agent-Threat-Rule/agent-threat-rules)
by scripts/import_atr.py: its rule identifiers, titles, categories, severities
and detection patterns, translated to Python's regular-expression dialect. The
commit it was built from is recorded in the file. It is used under the
following licence:

MIT License

Copyright (c) 2026 ATR 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.
