Privacy Policy
How Gritstone collects, uses and shares information, including advertising cookies served by Google. Last updated 2026-09-18.
Last updated
What we collect directly
This site is a static website. We do not run accounts, we do not ask you to log in, and we do not collect names, addresses, phone numbers or payment details. If you email us, we hold your message and your address only for as long as it takes to answer you.
Our web server records standard access logs: IP address, timestamp, requested path, referrer and user agent. These are kept for routine security and traffic analysis and are not used to build a profile of you.
Advertising, Google AdSense and DoubleClick
This site is supported by advertising served by Google. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website and other websites.
Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to this site and/or other sites on the internet. Google uses the DoubleClick DART cookie and, where consent is required, the Google Advertising Products data policy governs that processing.
You may opt out of personalised advertising by visiting Google Ads Settings at adssettings.google.com, or opt out of third-party vendor cookies for personalised advertising at aboutads.info and youronlinechoices.eu. Opting out does not remove advertising; it makes the advertising less relevant.
Consent, GDPR and the EEA, UK and Switzerland
Where the General Data Protection Regulation applies, our legal basis for advertising cookies is consent. A consent notice is presented before non-essential cookies are set, and you can change or withdraw your choice at any time from the same notice.
You have the right to access, correct, delete or restrict processing of your personal data, the right to object to processing based on legitimate interests, and the right to data portability. To exercise any of these, write to us at the address on the contact page.
Personal data may be transferred outside the European Economic Area by our advertising and hosting providers. Those transfers rely on the European Commission Standard Contractual Clauses or an equivalent safeguard.
CCPA and California residents
California residents have the right to know what personal information is collected, the right to request deletion, the right to correct inaccurate information, and the right to opt out of the sale or sharing of personal information.
We do not sell personal information for money. Because advertising cookies may be considered a "sale" or "share" under the California Consumer Privacy Act as amended by the CPRA, you can opt out using the consent notice or by writing to us. We will not discriminate against you for exercising these rights.
We do not knowingly collect personal information from children under 16.
Cookies, analytics and retention
Cookies on this site come from our advertising partners. We do not set first-party tracking cookies and we do not run a third-party analytics product that profiles individual visitors.
Server logs are rotated and deleted after a short retention period. Emails are kept until the matter is resolved and then deleted.
Changes to this policy
This policy was last updated on 2026-09-18. Material changes will be reflected in this date and, where appropriate, announced on the site.
Questions about this policy should go to the contact address listed on the contact page.