How-to
Vendor Security Questionnaire Questions Answered by Public Evidence
Solomon Amos · 26 Sep 2026 · 8 min read
Castle against third-party requirements
For each regulation, how many of the requirements it places on your vendors Castle’s public evidence reaches. Open one for every item with its date and source.
- GDPR0%1 expired4 no public evidence
- UK GDPR0%1 expired3 no public evidence
- DORA0%6 no public evidence
- NIS20%3 no public evidence
- HIPAA0%3 no public evidence
- PCI DSS0%2 no public evidence
- EU AI Act0%3 no public evidence
- ISO 27001 Annex A0%4 no public evidence
- SOC 2 CC9.20%2 no public evidence
Reviewing a vendor against regulations
All articlesExplainers
The EU-US Data Privacy Framework, explained for vendor reviews
Solomon Amos · 7 Sep 2026 · 10 min read
This maps third-party obligations to the vendor evidence that may support them. It is not legal advice and never a statement that a vendor or its customers comply; confirm scope and sufficiency with your counsel or auditor. “No public evidence” means nothing public was found at the last check. Citations link to the official text.