Appsec.fi – Interactive AppSec training matched to your stack

Name: Appsec.fi – Interactive AppSec training matched to your stack
Availability: InStock
Author: selteo

by selteo·Mar 30, 2026·2 points·0 comments

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AI Analysis

●●SolidSlickSolve My Problem

AI-graded code reviews matched to your tech stack beats generic Secure Code Warrior courses.

Strengths

•Stack-specific training adapts exercises to your languages, cloud, and CI/CD
•Browser-based attack labs require zero local setup for development teams
•Founder's 10+ years of security assessments informs realistic vulnerability scenarios

Weaknesses

•Enterprise security training is well-funded with Secure Code Warrior and SANS dominating
•Commercial SaaS model means teams must budget for ongoing subscriptions

Post Description

Hey HN. I'm Teo, I've spent 10+ years doing application security assessments and training dev teams. The same vulnerabilities kept coming back, so I built something to fix that.

AppSec.fi is an interactive platform where developers learn application security hands-on, matched to their actual stack (languages, cloud provider, CI/CD). Exercises include real attacks, real defense, AI-evaluated code reviews, and simulated environments. Everything runs in the browser.

We're launching a 2-week free trial starting tomorrow (April 1st). Today is the last day to sign up as an early adopter, which gets you 50% off permanently if you continue.

https://appsec.fi/en/

Happy to answer any questions about the platform or AppSec training in general.