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No. Telegram never notifies your contacts when you join or leave a group. Other members inside Data Science Community can see your username only if you post — your membership is not visible to anyone outside the group.

We verify every listing is publicly accessible, has a minimum member count, and exclude groups Telegram has marked as harmful. Data Science Community currently has 418 members, last verified 24 May 2026. If you've joined Data Science Community and noticed something suspicious — a review on this page helps others stay safe.