Niels Tanis

Using WebAssembly to run, extend, and secure your application

Docker's co-founder said if WASM existed in 2008, Docker wouldn't be necessary. Learn why this secure runtime is revolutionizing server-side applications.

Using WebAssembly to run, extend, and secure your application
#1about 3 minutes

Understanding WebAssembly and its initial industry adoption

WebAssembly is a portable binary format first used to run existing C codebases like AutoCAD in the browser and to build cross-platform SDKs for services like Disney+.

#2about 3 minutes

Exploring the foundational security features of WebAssembly

WebAssembly ensures security by default through isolated linear memory for each module and control flow integrity that prevents unintended code execution paths.

#3about 1 minute

How .NET applications execute on WebAssembly

.NET applications run on WebAssembly by compiling the .NET runtime (CLR) itself into a WASM module, which then interprets the standard .NET DLLs.

#4about 3 minutes

Taking WebAssembly beyond the browser with WASI

The WebAssembly System Interface (WASI) provides a standard API for running WASM modules outside the browser, enabling server-side applications with a capability-based security model.

#5about 4 minutes

Securing file system access in a .NET WASI application

A practical demonstration shows how a .NET application running on Wasmtime is denied file system access by default and requires explicit permissions to be granted.

#6about 3 minutes

Using a Rust WASM module to extend a .NET application

This example demonstrates how to extend a .NET host application with a WebAssembly module written in Rust, while still enforcing strict, capability-based security policies.

#7about 3 minutes

Securing dependencies with the nano-process model

The nano-process concept provides a fine-grained sandbox for each module, preventing malicious or vulnerable dependencies from gaining unauthorized access to system resources.

#8about 3 minutes

Ensuring the security and correctness of the WASM runtime

The security of the entire ecosystem relies on the runtime, and projects like Wasmtime use Rust, formal verification, and fuzzing to ensure its correctness and robustness.

Related jobs
Jobs that call for the skills explored in this talk.

Matching moments

Organizing a developer conference for 15,000 attendees
01:32 MIN

Organizing a developer conference for 15,000 attendees

Cat Herding with Lions and Tigers - Christian Heilmann

Selecting strategic partners and essential event tools
03:17 MIN

Selecting strategic partners and essential event tools

Cat Herding with Lions and Tigers - Christian Heilmann

Increasing the value of talk recordings post-event
04:57 MIN

Increasing the value of talk recordings post-event

Cat Herding with Lions and Tigers - Christian Heilmann

Establishing a single source of truth for all data
02:39 MIN

Establishing a single source of truth for all data

Cat Herding with Lions and Tigers - Christian Heilmann

Rapid-fire thoughts on the future of work
02:44 MIN

Rapid-fire thoughts on the future of work

What 2025 Taught Us: A Year-End Special with Hung Lee

Breaking down silos between HR, tech, and business
03:39 MIN

Breaking down silos between HR, tech, and business

What 2025 Taught Us: A Year-End Special with Hung Lee

Balancing the trade-off between efficiency and resilience
03:38 MIN

Balancing the trade-off between efficiency and resilience

What 2025 Taught Us: A Year-End Special with Hung Lee

Automating formal processes risks losing informal human value
03:48 MIN

Automating formal processes risks losing informal human value

What 2025 Taught Us: A Year-End Special with Hung Lee

Featured Partners

Related Videos

See all videos
WebAssembly: The Next Frontier of Cloud Computing30:58

WebAssembly: The Next Frontier of Cloud Computing

Edoardo Dusi

WebAssembly: The Next Frontier of Cloud Computing57:32

WebAssembly: The Next Frontier of Cloud Computing

Edoardo Dusi

Wasm Deep Dive - A Glance Behind the Scenes57:45

Wasm Deep Dive - A Glance Behind the Scenes

Rainer Stropek

WebAssembly: Disassembled27:27

WebAssembly: Disassembled

Stefan Schöberl

WebAssembly Revolution: Elevating JavaScript's Reach and Performance30:57

WebAssembly Revolution: Elevating JavaScript's Reach and Performance

Önder Ceylan

The Future of Cloud is WebAssembly29:49

The Future of Cloud is WebAssembly

Matt Butcher

Using WebAssembly for in-database Machine Learning58:53

Using WebAssembly for in-database Machine Learning

Akmal Chaudhri

Security in modern Web Applications - OWASP to the rescue!26:59

Security in modern Web Applications - OWASP to the rescue!

Jakub Andrzejewski

Related Articles

View all articles
CH
Chris Heilmann
WWC24 Talk - Scott Hanselman - AI: Superhero or Supervillain?
Join Scott Hanselman at WWC24 to explore AI's role as a superhero or supervillain. Scott shares his 32 years of experience in software engineering, discusses AI myths, ethical dilemmas, and tech advancements. Engage with his live demos and insights o...
WWC24 Talk - Scott Hanselman - AI: Superhero or Supervillain?
DC
Daniel Cranney
Dev Digest 198: 30 years of JS, In-Browser AI, How Attackers Abuse GenAI
Inside last week’s Dev Digest 198 . 🎂 30 years of JavaScript ⏰ How long is a JavaScript second 💻 Clean code in Angular 🤦‍♂️ AI makes different mistakes than humans 👨‍💻 In-browser and offline AI 🟠 Undocumented Hacker News features 🐋 DeepSeek censored...
Dev Digest 198: 30 years of JS, In-Browser AI, How Attackers Abuse GenAI

From learning to earning

Jobs that call for the skills explored in this talk.