Like all other Google Cloud products, Google Meet has built-in security settings and protection features. As a videoconferencing tool and being part of G Suite, Google Meet uses the reliable Google network which also protects your information and your privacy.
Whether Meet or the complete G Suite: Different combinations of 2-factor authentication are available to every Google user to protect their account.
All Google Cloud products are subjected to regular controls and audits and checked for data protection compliance. You can find the list of all certifications here.