Kubernetes Certified Application Developer (CKAD) with Tests
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Secure Coding in C# and .NET
Build secure .NET apps with OWASP, authentication, authorization, data protection, secrets, DevSecOps, and AI tools
Taught by ⋮ Trevoir Williams
Total Enrolments : 999Development
$9.99 with coupon (list $149.99 — save $140.00, 93% off)
Coupon Verified: October 10, 2026 · click Claim Coupon to apply the discount code
Coupon Overview
The short version of this deal — what the coupon covers, what it costs, and when our team last checked it.
This page tracks a verified Udemy coupon for Secure Coding in C# and .NET — a Development course from Trevoir Williams, suitable for learners at every level. Enrolling through this page takes the price from $149.99 down to $9.99 — that's 93% off, or $140.00 saved.
What you get is the same as any full-price seat: lifetime access to the on-demand lessons (8h), every future update the instructor publishes, and a certificate of completion once you finish. It has already been taken by 999 learners and holds a 4.6-star average on Udemy, and the lessons are delivered in English.
The listing was last verified by hand on October 10, 2026 and is recorded valid through November 8, 2026 — claim it before then, or while redemptions last.
Heads up: the recorded end date for this coupon (November 8, 2026) has already passed, so Udemy may show the standard $149.99 price at checkout. We keep this page live because the course details, syllabus and redemption steps below stay useful — and a fresh coupon often gets recorded here later.
Best suited to learners with some footing in Development — prerequisites as listed by the instructor: Basic C# experience and the ability to run simple .NET applications; Familiarity with Visual Studio or Visual Studio Code. Browse more coupons while you are here: Development coupons · Software Engineering courses · today's free Udemy coupons.
- Price with coupon
- $9.99
- Regular price
- $149.99
- Discount
- 93% off (you save $140.00)
- Last verified
- October 10, 2026
- Offer ends
- November 8, 2026 (recorded date has passed)
- Provider
- Udemy
- Category
- Development
- Duration
- 8h on-demand video
- Language
- English
- Enrollments
- 999 students
- Rating
- 4.6 / 5
- Access
- Lifetime access, self-paced
- Certificate
- Certificate of completion
Key Takeaways
Everything that matters about this coupon in one scan — price, validity, and what you walk away with.
- 93% off $9.99 with the coupon instead of the $149.99 list price — a saving of $140.00.
- Expired on record last checked by hand on October 10, 2026 and recorded valid through November 8, 2026. Claim it anyway in case the offer was extended — otherwise the checkout page will show the standard price.
- Learner feedback 4.6-star rating from 999 enrolled learners on Udemy.
- 8h of video self-paced on-demand lessons with lifetime access — study now, revisit whenever you like.
- Lessons in English self-paced study with a certificate of completion once you finish.
- Taught by Trevoir Williams — with the same course materials and updates as full-price students.
- 30-day refund window purchases on Udemy can be refunded within 30 days, subject to Udemy's refund policy — a few payment methods are refundable as store credit only.
Is the Secure Coding in C# and .NET Coupon Worth It?
Our verdict: worth it — as long as the Development skills on the syllabus match what you actually want to learn. The regular price for Secure Coding in C# and .NET on Udemy is $149.99. With the coupon code on this page, that falls to $9.99 — a saving of $140.00, or 93% off the standard rate Spread across 8h of on-demand video, that works out to roughly $1.25 per hour of content — cheaper than a single chapter of most printed Development textbooks.
A cheap price means nothing if the material is thin — here the syllabus is organized around usable outcomes. Trevoir Williams walks you through apply secure coding principles to C# and .NET applications, identify and fix common OWASP Top 10 vulnerabilities in ASP.NET Core apps, and secure APIs using authentication, authorization, JWT, roles, claims, and policies — skills meant to be used, not just watched. It has already been taken by 999 students and holds a 4.6-star average from verified reviews, which suggests the content holds up once learners actually apply it.
Check the prerequisites before you commit: Basic C# experience and the ability to run simple .NET applications; Familiarity with Visual Studio or Visual Studio Code. Best suited to learners who already have footing in Development. Plan for roughly 8h of on-demand video at your own pace. Lessons are delivered in English.
Pros
- ✓Confirmed 93% price cut, checked by hand.
- ✓Strong learner feedback (4.6 out of 5).
- ✓Taken by 999 students so far.
- ✓Completion certificate plus lifetime access.
Cons
- !The coupon can expire without warning — after that, expect something close to the standard $149.99.
- !Lifetime access depends on Udemy itself; platform policies can always change.
- !Set aside extra hours for exercises and quizzes beyond the 8h of video.
What You'll Learn
Practical skills and outcomes you'll gain from Secure Coding in C# and .NET — taken from the official Udemy syllabus for Development learners.
Apply secure coding principles to C# and .NET applications.
Identify and fix common OWASP Top 10 vulnerabilities in ASP.NET Core apps.
Secure APIs using authentication, authorization, JWT, roles, claims, and policies.
Prevent SQL injection, XSS, command injection, insecure deserialization, and excessive data exposure.
Protect secrets, connection strings, API keys, and tokens in local and cloud environments.
Use encryption, hashing, TLS, and secure logging to protect sensitive data.
Review and improve AI-generated code from GitHub Copilot using secure coding practices.
Add dependency scanning, static analysis, and secure CI/CD checks to .NET workflows.
Requirements
What you need before enrolling in Secure Coding in C# and .NET — prerequisites as listed by the instructor on Udemy.
Basic C# experience and the ability to run simple .NET applications
Familiarity with Visual Studio or Visual Studio Code
Basic understanding of APIs, HTTP requests, and databases
No prior cybersecurity experience required
About This Course
The full official description of Secure Coding in C# and .NET — curriculum, teaching approach, and everything included with this Udemy coupon.
How to Redeem This Udemy Coupon
Four steps, roughly two minutes. The discount travels with our link, so there is no code to copy and paste.
- Click the Claim Coupon button
Press the "Claim Coupon" button on this page. It opens the Udemy course page in a new tab with the coupon attached to the link.
- Check the discounted price
The discount is applied automatically — there is no code to type in. If Udemy shows $149.99 instead, the coupon has expired. The price at checkout should read $9.99.
- Sign in or create a free account
Udemy requires an account before checkout. Sign in, or register with an email address if you are new — creating an account is free.
- Enroll and start learning
Confirm the price and click "Enroll Now". The course is added to your account with lifetime access and a completion certificate once you finish it.
Important: this coupon may not function properly in private/incognito browsing mode. Please use a standard browser window and consider temporarily disabling any ad blockers or VPN services. If the Udemy app opens instead of the browser, switch to a browser tab — Udemy does not support coupon codes inside its mobile app.
Claim Secure Coding in C# and .NET Coupon Code$9.99 with coupon · 93% off · verified Oct 10, 2026 · recorded end date has passedPrefer screenshots? Follow our full how to redeem a Udemy coupon guide. Curious how each code gets confirmed? Read how we test and verify Udemy coupons.
Frequently Asked Questions
Common queries about this coupon, pricing, and enrollment. Answers reflect our last check on October 10, 2026.
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