Learn without an account
Every lesson, exercise and quiz on Canuc80k Wiki can be read without signing in. An account only carries your “Learned” progress to other devices.
What the site stores
- On your device: language and light/dark theme (cookies
cnk_lang,cnk_theme), lessons you marked and the sidebar state (browser storage). Clearing your browser data removes them. - When you sign in: a cookie that keeps you signed in. The server stores the name, email and picture sent by Google or LQDOJ, the sign-in tokens they issue, the IP address and browser of each session, and the lessons you finished in each wiki. “Try without an account” creates an account with no real name or email.
- Page statistics: Cloudflare Web Analytics counts page views without cookies and does not follow you to other sites.
What it is used for
Only for signing in and syncing your progress. Canuc80k Wiki does not sell or rent data and does not use it for targeted advertising. Ad cards on the site are plain links with no tracking code.
Who else processes data
The site runs on Cloudflare (servers, database, statistics). When you sign in with Google or LQDOJ, they know you signed in to Canuc80k Wiki. Exercises opened on LQDOJ, Kaggle or other sites follow those sites’ terms.
Students under 16
You can learn without an account. Ask a parent or guardian before creating one. Parents may ask to see or delete their child’s account as described below.
See, correct or delete your data
Email [email protected] with the email of the account. Within 7 days the account, its sessions and its progress will be sent to you or deleted for good, as you ask.
Terms of use
- The content is free for learning. You may quote it, share links and teach with it, including when AI tools quote it, as long as you credit Canuc80k Wiki with a link. Do not copy whole lessons or the whole set to sell.
- Lessons may contain mistakes. If you find one, use “Feedback” in the wiki footer.
- Do not abuse the site: no attacks on the servers, mass account creation or harmful content.
- When these terms change, the date at the top changes too.
Contact
[email protected] · Zalo +84 363 627 518 · Facebook