Hasty Treat - Front End Security

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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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

• React
• GraphQL
• Express

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