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*Cryptographic primitives, hosted on the decentralized nodes of the Threshold network, offering accessible, intuitive, and extensible runtimes and interfaces for
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secrets management and dynamic access control.*
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[](https://pypi.org/project/nucypher/)
[](https://pypi.org/project/nucypher/)
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[](https://codecov.io/gh/nucypher/nucypher)
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[](https://discord.gg/7rmXa3S)
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[](https://www.gnu.org/licenses/gpl-3.0.html)
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----
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# Threshold Access Control (TACo)
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TACo is end-to-end encrypted data sharing and communication, without the requirement of
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trusting a centralized authority, who might unilaterally deny service or even decrypt private user data. It is the only
access control layer available to Web3 developers that can offer a decentralized service, through a live,
well-collateralized and battle-tested network. See more here: [https://docs.threshold.network/applications/threshold-access-control ](https://docs.threshold.network/applications/threshold-access-control )
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# Getting Involved
NuCypher is a community-driven project and we're very open to outside contributions.
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All our development discussions happen in our [Discord server ](https://discord.gg/threshold ), where we're happy to answer
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technical questions, discuss feature requests,
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and accept bug reports.
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If you're interested in contributing code, please check out
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our [Contribution Guide ](CONTRIBUTING.rst )
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and browse our [Open Issues ](https://github.com/nucypher/nucypher/issues ) for potential areas to contribute.
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# Security
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If you identify vulnerabilities with _any_ nucypher code, please email security@nucypher.com with relevant information
to your findings.
We will work with researchers to coordinate vulnerability disclosure between our stakers, partners, and users to ensure
successful mitigation of vulnerabilities.
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Throughout the reporting process, we expect researchers to honor an embargo period that may vary depending on the
severity of the disclosure.
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This ensures that we have the opportunity to fix any issues, identify further issues (if any), and inform our users.
Sometimes vulnerabilities are of a more sensitive nature and require extra precautions.
We are happy to work together to use a more secure medium, such as Signal.
Email security@nucypher.com and we will coordinate a communication channel that we're both comfortable with.
A great place to begin your research is by working on our testnet.
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Please see our [documentation ](https://docs.threshold.network ) to get started.
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We ask that you please respect testnet machines and their owners.
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If you find a vulnerability that you suspect has given you access to a machine against the owner's permission, stop what
you're doing and immediately email security@nucypher.com.
