February 16th, 2024 × #security#javascript#css
Client side security, XSS attacks & CSP with Stripe’s Alex Sexton
Alex Sexton from Stripe discusses CSP (Content Security Policy) and client side security best practices, drawing on 11 years of experience at Stripe.
#731
Scott and Wes are joined by security expert, Alex Sexton of Stripe to cover all things: client security, XSS, attack vectors, and CSP (content security policy).
Show Notes
- 00:00 Welcome to Syntax!
- 00:31 Brought to you by Sentry.io.
- 00:57 Who is Alex Sexton?
- 04:44 Stripe dashboard is a work of art.
- 05:08 Tell us about the design system.
- React Aria
- 08:59 Who develops the iOS app?
- 09:50 Stripe's CSP (content security policy).
- 12:50 What even is a content security policy?
- Content Security Policy explanation
- 13:57 Douglas Crockford of Yahoo on security.
- Douglas on GitHub
- 15:13 Security philosophy.
- 16:59 What about inline styles and inline JavaScript?
- 19:41 How do we safely set inline styles from JS?
- 20:20 Setting up with meta tags.
- 22:52 What are common situations that require security exceptions?
- 26:24 Potential damage with inline style tags.
- 32:45 Looping vulnerabilities.
- 36:32 What about JavaScript injection?
- 37:09 Myspace Samy Worm.
- Myspace Samy Worm Wiki
- Sentry.io Security Policy Reporting
- 42:02 Does a CSP stop code from running in the console?
- 43:28 What are some general security best practices?
- 46:35 Strategies for rolling out a CSP.
- 51:49 Final tip, Strict Dynamic.
- Strict Dynamic
- 56:36 Where does the CSP live within Stripe?
- Original Black Friday story
- 59:35 One last story.
- 01:01:20 Sick Picks + Shameless Plugs
Sick Picks + Shameless Plugs
- Alex: Wes Bos' Instagram
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