Cookie Policy

This Cookie Policy explains the types of cookies and local storage items deployed on Operis Platform, operated by Vellium ("Company", developer and operator of Operis platform; Operis is a product of Vellium), and the methods available for users to manage their preferences.

Cookies are small text files stored on your device (computer, tablet, smartphone) through your browser when you visit a website. Cookies are deployed to safeguard session security, maintain interface preferences, and optimize operational performance.

Operis does not deploy third-party behavioral advertising or commercial tracking cookies. Deployed technologies are classified into:

A. Strictly Necessary Cookies

Essential for the core security and functionality of the website:

• `operis_session`: Authenticates user login sessions and guards against unauthorized access (HttpOnly, SameSite).
• `__cf_bm` / `cf_clearance`: Used by Cloudflare infrastructure to identify legitimate traffic and mitigate automated bot assaults.
• `csrf_token`: Secures state-changing requests and form submissions against cross-site request forgery.

B. Functional & Preference Cookies

Used to preserve personalized settings across sessions:

• `operis_theme`: Remembers selected visual theme (Light, Dark).
• `operis_locale`: Remembers chosen language (Turkish or English).
• `operis_cookie_consent`: Stores user consent and configuration choices regarding optional categories.

C. Performance & Analytics (Optional / Explicit Opt-in Only)

Disabled by default; activated only upon the user's voluntary, affirmative consent:

• `PostHog`: Activated strictly when the user grants explicit permission in the Cookie Preferences panel. All form inputs and sensitive text are masked. Never used for behavioral profiling or ad targeting.
• `Sentry`: Captures client-side technical error traces in an anonymized format to maintain platform stability.

• Strictly Necessary Cookies are processed under KVKK Art. 5/2-c (*"performance of a contract"*) and Art. 5/2-f (*"legitimate interests of the data controller"*).
• Optional Analytics Cookies are processed strictly under KVKK Art. 5/1 based on explicit user consent. Without consent, analytics scripts remain uninitialized and collect no data.

Users can:

1. 1Access the "Cookie Preferences" link in the platform footer at any time to modify or revoke consent with immediate prospective effect.
2. 2Manage or remove stored cookies via browser settings:

• Google Chrome: Settings > Privacy and Security > Third-party cookies
• Mozilla Firefox: Settings > Privacy & Security > Cookies and Site Data
• Safari: Preferences > Privacy > Manage Website Data
• Microsoft Edge: Settings > Cookies and site permissions

*Note: Blocking strictly necessary session cookies will prevent signing into the platform.*