Add Arachne Digital

README.md

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             A spreadsheet containing information and intelligence about APT groups, operations and tactics.
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+            <a href="https://www.arachne.digital/" target="_blank">Arachne Digital</a>
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+            A commercial and open source cyber threat intelligence platform aimed at threat-informed defence that auto‑maps text to MITRE ATT&CK®. Organisations working in public healthcare, public education and human rights can apply to access the API feed and regular reports free of charge.
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             <a href="https://www.binarydefense.com/banlist.txt" target="_blank">Binary Defense IP Banlist</a>
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             Allows you to test your TAXII environment by connecting to the provided services and performing the different functions as written in the TAXII specifications.
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+            <a href="https://app.arachne.digital/thread" target="_blank">Thread</a>
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+            An open source web/NLP tool that ingests URLs or text and auto‑maps sentences to MITRE ATT&CK®, letting analysts review, tag, and export STIX/Navigator/PDF outputs for rapid CTI production.
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             <a href="https://github.com/jpsenior/threataggregator" target="_blank">threataggregator</a>