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July 8th, 2019 ×

Hasty Treat - Front End Security

Wes Bos

Wes Bos Host

Scott Tolinski

Scott Tolinski Host

or
Show Notes Transcript

In this Hasty Treat, Scott and Wes talk about front end security and what to do in order to avoid hacking.

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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

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