Kim has posted several articles pointing out some potential security issues with the Zoom program:
However, that said they due use encryption and take other measures to protect your privacy. There are details about the security they implement here:
If you have a G-Suite account (a business Google account through work or school) then Google Meet is a great option. We have been using this while working remotely to have our team meetings. Here is information on their security:
If you do not have a G-Suite account, you can sign up for one for as little as $6 a month: https://gsuite.google.com/pricing.html
The other members can join the meeting with a regular Google account, but the person who creates the meeting must have G-SUite.
Skype is another option that is free: