I used Telegram as a medium of Communication with in my team of freelancers. But I have shifted to Zoom since this Outbreak of Pandemic. As Many of hackers are also became active to target the companies and startups to steal their information.
I was also facing similar issues, since two weeks people send phishy emails and add my people on different groups. I am unable to control that so thats why I have shifted my team to zoom, and deactivated our telegram accounts for a while by following a regular steps guide.
Is it possible to get away from this scam because zoom is not useful as we thought.