In this Hasty Treat, Scott and Wes talk about front end security and what to do in order to avoid hacking. Sentry - Sponsor If you want to know what’s happening with your errors, track them with Sentry. Sentry is open-source error tracking that helps developers monitor and fix crashes in real time. Cut your time on error resolution from five hours to five minutes. It works with any language and integrates with dozens of other services. Syntax listeners can get two months for free by visiting Sentry and using the coupon code “tastytreat”. Show Notes 2:53 - SSL Encrypted transfer of information Digitally binds a cryptographic key to an organization’s details Web-cam, geolocation, etc. 6:15 - innerHTML React’s dangerouslySetInnerHTML Name intentionally chosen to be frightening Allows you to write HTML to the DOM Data should be sanitized before used in prop Removes unexpected data from string Used to prevent cross site scripting attacks 10:25 - Don’t trust the client The client can be manipulated to send any info to your server E-commerce example — don’t take the price total from the front end to make the charge, DB call and calculate on the server Validate form inputs via HTML 5 field validation/check data types on the server Don’t allow your users to send an object when it should just be a string Get this for free with GraphQL via types 13:41 - PCI Compliance Protect card holder data SSL or Secure iFrame Encrypt transmission of card data Restrict access to card holder data Restrict physical access Front of front-end 16:44 - Tips Don’t put a name on sensitive fields if you are using JS HTTP only cookies Local Storage tokens XSS Links React GraphQL Express Tweet us your tasty treats! Scott’s Instagram LevelUpTutorials Instagram Wes’ Instagram Wes’ Twitter Wes’ Facebook Scott’s Twitter Make sure to include @SyntaxFM in your tweets