A. Be cautious when interacting with unknown users. Avoid sharing personal information or clicking on suspicious links. You can also use the 'Block' feature to prevent scammers from contacting you. To block a user, go to their profile, tap on the three dots in the top right corner, and select 'Block User'.

B. Join verified groups or channels that have a good reputation. Look for groups that are moderated and have a clear set of rules. You can also report suspicious accounts or groups to Telegram by tapping on the profile, selecting 'Report', and choosing the appropriate reason.