Several mental health mobile apps with millions of downloads on Google Play contain security vulnerabilities that could expose users' sensitive medical information.

In one of the apps, security researchers discovered more than 85 medium- and high-severity vulnerabilities that could be exploited to compromise users' therapy data and privacy.

Some of the products are AI companions designed to help people suffering from clinical depression, multiple forms of anxiety, panic attacks, stress, and bipolar disorder.

At least six of the ten analyzed apps state that user conversations or chats remain private, or are encrypted securely on the vendor's servers.