PII Protection mode provides enhanced protection, but it isn’t a guarantee because of the following reasons:
No. Confidential information and commercially sensitive information are much broader categories of information than PII even though there may be some overlap.
You are responsible for removing confidential information and commercially sensitive information from your prompts and documents.
Please reach out to us if you’d like to licence use of our Crystal Knowledge Base or other aspects of the Crystal aOS in your own environment.
Please refer to the full list of supported “PII entities” – i.e. types of PII that are identifiable when using Crystal Chat – available at https://microsoft.github.io/presidio/supported_entities/.
Whilst location is an identifiable type of PII, we do not support removal of this data because if a prompt includes reference to one or more jurisdictions Crystal’s ability to retrieve accurate information about a particular jurisdiction and associated legislation, cases, and regulatory guidance would be distorted.
PII Protection mode can significantly slow down response time, and not all documents and prompts will contain PII, so by default PII Protection mode is switched off.
You can only switch on PII Protection mode at the start of a new chat.
If you have started a chat without PII Protection mode on, you cannot switch it on mid-chat.
You are responsible for ensuring when and under what circumstances personally identifiable information can be shared with third parties.
Some large language models (LLMs), like the OpenAI models, can only be accessed via the LLM provider’s API. This means that in Crystal Chat when you select an API-based AI model, such as OpenAI’s GPT 4.1, OpenAI as the API provider receives your prompt. Despite legal terms that may state that prompt data is not used to train the provider’s LLMs, the data is still collected, subject to the third party’s terms of collection, processing, sharing and use and strength of their information security controls.
PII Protection mode provides you with enhanced (but not guaranteed) protections that certain types of PII are not shared with third parties. Please review the types of PII identifiable and supported in Crystal Chat [here] [link to What types of personally identifiable information (PII) are identifiable?]
When switched on, PII Protection mode will work to remove certain types of PII from a prompt and replace that information with alternative text before the prompt is sent to the large language model (LLM). After the response is received from the LLM, PII Protection mode replaces the alternative text with the original information.
For each new chat, you can switch on PII Protection mode to remove certain types of personally identifiable information from all prompts in that chat.
When you add a document (or several) to your prompts, PII Protection mode will remove certain types of PII from the document content.
We obtained our ISO 27001 2022 Initial Certification on 16 July 2025.
We have engaged Prescient Assurance to conduct our SOC 2 Type 1 examination at the end of August, and our SOC 2 Type 2 examination between September 2015 to December 2025.
To access our certifications, audit reports and more please request access to our Trust Center, powered by Vanta, here.
All G20 countries are comprehensively covered, and the remaining 100+ jurisdictions range from basic to comprehensive levels of coverage.
Our database is updated daily with new crypto legislation, cases, regulatory guidance and policy consultations from all around the world.
If you discover a key document is missing from the Crystal Knowledge Base, let us know with the official URL and earn US$1 in Crystal Credits per document submitted and accepted by us.
No, Crystal does not provide legal or professional advice and you cannot rely on any output as such.
Crystal is a crypto-specific AI-powered tool to assist humans with research, drafting, and review tasks. You should always consult with a qualified legal professional for specific legal advice tailored to your situation.
We are actively onboarding "Crypto Pros" for you to connect instantly with experienced and licensed / registered crypto professionals around the world. This includes crypto lawyers, software developers, crypto accountants and more.
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