Course description
XSS attacks are arguably the main threat against JavaScript web applications. In this course, we will cover them in detail and leave no stone unturned as we check everything about reflected, stored, DOM-based XSS. We will extensively cover CSP and trusted types.
Syllabus
XSS overview
Video — 00:11:57
What is cross-site scripting and what is its impact?
Reflected XSS
Video — 00:15:53
Reflected XSS happens when the XSS payload is sent to a server and sent back to the client.
Stored XSS
Video — 00:07:04
Stored XSS happens when the server keeps the XSS payload in database or on the file system.
DOM-based XSS
Video — 00:13:15
DOM-based XSS happens without any server interactions.
Code execution: eval and other vulnerable sinks
Video — 00:14:36
There are multiple ways (beyond XSS) to dynamically inject code in a running JavaScript applications.
Content security policy and XSS
Video — 00:15:05
Content security policies are a complex yet powerful tool to prevent browsers from loading data insecurely.
Trusted types
Video — 00:16:03
Trusted types is the latest iteration in the fight against XSS.
Meet the author
Vladimir is a core Node.js collaborator and is involved in most security-related topics of the Node.js project. He has worked for seven years as an Application Security expert at Sqreen and as a Staff Engineer at Datadog. He is now building a new company.
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