Privacy policy

This policy describes what data c-bx.ru (sole proprietor M. V. Kuznetsov, OGRNIP 318505300007257) collects, why it is needed and what happens to it. We only collect what the courses cannot work without.

What we store

Account. Email address (it is also your sign-in and where receipts go), name, password as an irreversible hash, and optionally a phone number and an avatar. We record the date and IP address of your acceptance of the terms and this policy, because we must be able to prove it.

Purchases. Order contents, amount in roubles, date. Your card details never reach us: they are processed by the payment provider on their side.

Video viewing. Which parts of each video you have actually played (a viewing map in steps of a few seconds; seeking does not count), where you stopped, how long you watched in total and when a video was completed. We need this so a course opens where you left off, to mark videos as completed (from 90% watched) and to calculate the amount of a refund: a video counts as watched from 10% of its length (section 8 of the terms of service).

Feedback. Recordings you send to the author and the author’s replies.

Security. When you sign in we store the IP address and browser name; the recent sign-in journal is visible to the administrator and helps investigate if someone else uses your account.

Devices and viewing log. Each browser you sign in from gets its own marker (the cb_dev cookie): it limits an account to three devices and one playback at a time. When you sign in from a new device we email you a code. For each playback we record the video, time, IP address and browser. During playback your email address is shown over the video so that recordings are not distributed. This information is visible to the administrator.

Cookies

The site sets these cookies of its own: the sign-in session, the device marker, the selected currency, the analytics-consent flag and a temporary pass that signs you into the course right after payment. Details are in the cookie policy.

Analytics

Traffic is measured by Yandex Metrica — only after your explicit consent in the banner. Until you agree, the counter does not load at all.

Emails

Service emails (receipts, password changes, instructor replies) go to everyone: the service does not work without them. Emails about new courses go only to those who opted in; you can unsubscribe via the link in any such email or in your profile.

Who we share data with

Nobody except technically necessary contractors: hosting, email service, and the Robokassa payment service (order amount, email for the receipt and receipt data). We do not sell data or hand it over for third-party advertising.

How long we keep it

Account data and the video viewing map — for as long as the account exists. Order records — for the periods the law sets for payment documents. The sign-in journal — the last ten entries. The viewing log (time, IP address, browser) — 180 days.

Your rights

You change your name, phone and avatar yourself in the profile. Email is changed by us on request — it is tied to receipts. You can request a copy of your data or deletion of the account: write to the support address in the site footer. Deletion does not cover data we are required to keep by law.

Questions

For any questions about personal data, write to the email in the site footer. We reply within three working days.

This translation is provided for convenience. The Russian version prevails.