Trust No Client: Securing Your Roblox Experience

WEBINAR

4:00 PM - 4:30 PM GMT

October 18, 2026

Trust No Client: Securing Your Roblox Experience

# Security

# Algorithm

A buy button looks harmless. What happens when its request reaches the server with a different price, the wrong item, or far too many calls?

Join me, Yee Sen, for a 30-minute Roblox security workshop built around a fictional bakery shop. We will inspect an unsafe RemoteEvent handler, make the server check the request, and test the result together. Expect short code puzzles, chat votes, and explanations you can use in your own experiences.

What we will practise: • Choosing which decisions belong on the server. • Validating remote inputs and checking whether a player can perform an action. • Using server-owned prices and balances, and limiting request frequency. • Reasoning about unusual numbers and changes to state while code waits.

Who it is for: beginner and intermediate Roblox developers who can read basic Luau. Experienced developers are welcome to tackle the reasoning questions. You can join without writing code live or opening Studio.

Format: a solo, voice-led webinar with visual slides, audience challenges, and a short Q&A. We will record my presentation and voice for a replay.

Time: Monday, 19 October 2026, 00:00–00:30 SGT (UTC+8). Registration is free. No prizes or giveaways.

Please follow the Roblox Community Standards. Keep questions about protecting your own code, and leave private code, credentials, and exploit instructions out of chat. Creator Events participants must be at least 13.

Speakers

Yee Sen

Junior Event Organizer @ Creator Events Program

Slides (1)

Thumbnail of the file Trust-No-Client-Slides.pdf

Trust No Client — Lesson Slides

Topics

Client-Server Authority: Requests Versus Decisions

Security Lab

Runtime Input Checks and Player Eligibility

Security Lab

Server-Owned Prices and Request Frequency Limits

Security Lab

Unusual Numbers and State Changes While Code Waits

Security Lab

Testing Valid Purchases and Rejected Requests

Security Lab

Agenda

4:00 PM --1

4:02 PM--1

GMT

Opening / Closing

Welcome, Introduction and Warm-Up

4:02 PM --1

4:08 PM--1

GMT

Presentation

The Client-Server Boundary and Unsafe Shop Challenge

4:08 PM --1

4:15 PM--1

GMT

Presentation

Server Validation and the Repaired Purchase Gate

4:15 PM --1

4:19 PM--1

GMT

Presentation

Eligibility and Request Frequency

4:19 PM --1

4:23 PM--1

GMT

Presentation

Number and Timing Puzzles

4:23 PM --1

4:25 PM--1

GMT

Presentation

Test Valid and Rejected Paths

4:25 PM --1

4:28 PM--1

GMT

Presentation

Focused Q&A

4:28 PM --1

4:30 PM--1

GMT

Opening / Closing

Takeaway, Survey and Closing

Attendees

Bessie

member

Arlene

member

Cody

member

Colleen

member

Kathryn

member

Bessie

member

Already registered?

Starting in 5 days 16 hours

4:00 PM - 4:30 PM GMT

October 18, 2026

Online

Organized by

yeesen

Starting in 5 days 16 hours

4:00 PM - 4:30 PM GMT

October 18, 2026

Online

Organized by

yeesen