How secure is wormhole.app?

I'm a bit new to privacy and encryption, and looking for a convenient way to send sensitive data. How secure is [wormhole.app](https://wormhole.app/security) for this purpose? I searched around on reddit, and seems like not many people know about, or use this site. I've been using it for a while, and it works flawlessly. Just never needed it for any sensitive data until recently.

app privacy wormhole