Cookies are small text files placed on your device when you visit a website. They are widely used to make websites work correctly, improve efficiency, and provide information to site owners. Cookies may be session-based (deleted when you close your browser) or persistent (remaining for a defined period).
QSL also uses similar technologies including local storage, session storage, and pixel tags. This policy covers all such technologies collectively referred to as "cookies".
QSL does not use advertising cookies, behavioural tracking cookies, or cross-site tracking technologies of any kind. We believe your browsing data is yours.
| Cookie Name | Category | Duration | Purpose |
|---|---|---|---|
| qsl_session | Necessary | Session | Maintains your authenticated login session across page requests. |
| qsl_csrf | Security | Session | CSRF token to protect form submissions from cross-site request forgery attacks. |
| qsl_2fa_trusted | Security | 30 days | Marks a device as trusted after successful two-factor authentication. |
| qsl_prefs | Preference | 1 year | Stores UI preferences including language, currency display, and notification settings. |
| qsl_cookie_consent | Necessary | 1 year | Records your cookie consent decision to avoid repeated prompts. |
| qsl_dark_mode | Preference | 1 year | Stores your selected display theme (dark/light mode). |
| _plausible | Analytics | Session | Plausible Analytics — privacy-preserving, no personal data collected, no cross-site tracking. |
QSL limits third-party cookies to essential service providers:
__cf_bm, _cfuvid)We do not permit Google Analytics, Meta Pixel, TikTok Pixel, or any other third-party advertising or behavioural tracking scripts on our platform.
You have several ways to control cookies:
Blocking necessary or security cookies will prevent you from logging in to your QSL account and using core platform features. We recommend keeping these enabled.
For cookies that are not strictly necessary, we rely on your explicit consent as the legal basis for processing (UK GDPR Article 6(1)(a) / EU ePrivacy Directive). You may withdraw consent at any time via your cookie preferences without affecting the lawfulness of prior processing.
Strictly necessary and security cookies are set on the basis of legitimate interests (Article 6(1)(f)) as they are essential to providing the secure service you have requested.
We may update this Cookie Policy to reflect changes in the cookies we use or for other operational, legal, or regulatory reasons. When we make material changes, we will notify you via our cookie consent banner and, where appropriate, by email. The "last updated" date at the top of this page indicates when the policy was most recently revised.
Questions About Cookies?
Our Data Protection Officer is happy to help with any cookie or privacy-related enquiries.
DPO: dpo@quantspectrumledger.com
Privacy: privacy@quantspectrumledger.com
ICO (UK regulator): ico.org.uk