Everyone is hacking everything. Everything is vulnerable. Your site, your users, even you. Are you worried about this? You should be! Don't worry, Phil is not trying to scare you (that much). You have plenty of safeguards against attempts on your applications' user data. We all (hopefully) recognise Two Factor Auth as one of those safeguards, but what actually goes on under the hood of 2FA?
You will discover how to generate one-time passwords and implement 2FA in your applications, and hear the only real-life compelling use case for QR codes. Together, we'll make the web a more secure place.
notp package: https://www.npmjs.com/package/notp
Tutorial on implementing Authy with Node and Express: https://www.twilio.com/docs/tutorials/walkthrough/two-factor-authentication/node/express