Tech Skills
Cybersecurity
Ethical hacking, penetration testing, network security, CTFs and defensive security
Skills in this topic
8 skills — Sign in to track your progress
Security Basics
beginner
Fix OWASP top 10 vulnerabilities
AI Security
intermediate
Identify and patch prompt injection vulnerabilities
Network Security
intermediate
Configure a firewall with proper inbound/outbound rules
Ethical Hacking & Pen Testing
intermediate
Conduct a full pen test with Kali Linux
Cloud Security
intermediate
Implement IAM least-privilege policies on AWS/GCP
Incident Response
intermediate
Build an incident response playbook
Security Compliance
intermediate
Map controls for SOC 2 Type II compliance
Defensive AI
advanced
Build an AI-powered log anomaly detector

Dev.to · Sam Bishop
🔐 Cybersecurity
⚡ AI Lesson
2w ago
10 Application Security Testing Tools for Secure CI/CD Pipelines
Pipelines fail for a lot of reasons, but security scans shouldn't be one of the recurring ones. If...

Dev.to · Aviral Srivastava
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Network Segmentation and Micro-segmentation
Building Digital Fortresses: Network Segmentation and Micro-segmentation Explained Ever...

Dev.to · JSON-LEE
🔐 Cybersecurity
⚡ AI Lesson
2w ago
How to Check If an Online JSON Formatter Uploads Your Data
Most developers have done this at least once. You get a messy API response. You need to inspect a...

Dev.to · varun varde
🔐 Cybersecurity
⚡ AI Lesson
2w ago
How Do You Integrate Penetration Testing into CI/CD?
Modern software delivery pipelines can deploy code dozens or even hundreds of times per day....

Dev.to · Guatu
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Network Policies with Calico: Default Deny and Namespace Isolation
Rolling out default-deny NetworkPolicies and namespace isolation with Calico without breaking DNS, ingress, or admission webhooks.

Dev.to · Haven Messenger
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Hash-Based Signatures: The Most Conservative Path to Post-Quantum
Nearly every digital signature in use today — RSA, ECDSA, Ed25519 — rests on a number-theory problem...

Dev.to · 이령
🔐 Cybersecurity
⚡ AI Lesson
2w ago
rojaprove now ships two live targets you can test it against before trusting it
A while back I posted on Dev.to about why a user can type nothing malicious and still get their data...

Dev.to · Pentest Testing Corp
🔐 Cybersecurity
⚡ AI Lesson
2w ago
How to Build a Node.js Logger That Catches OWASP Top 10 Attacks and Alerts on Slack
Most developers don’t think about common web attacks until something breaks—or worse, until a breach...

Dev.to · Vedant Kulkarni
🔐 Cybersecurity
⚡ AI Lesson
2w ago
CTF Lab Writeup: ABSOLUTE NANO
PicoCTF Challenge | Difficulty: Beginner-Intermediate | Category: Privilege...

Dev.to · Odilon HUGONNOT
🔐 Cybersecurity
⚡ AI Lesson
2w ago
CRL Double-Gate in mTLS: Revoking a Cert When the Client Is Already Connected
tls.Config.VerifyConnection only runs at handshake. A client on keep-alive after revocation keeps serving. Double-gate pattern and CRL hot-reload with monotonic

Dev.to · Lucky
🔐 Cybersecurity
⚡ AI Lesson
2w ago
5 Ways to Protect Your App from Dependency Vulnerabilities in 2026
Software supply chain attacks increased 742% between 2020 and 2025. The trend continues upward in...

Dev.to · benjamin
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Stop pasting JWTs into random websites — I built a zero-dep CLI to decode them in your terminal
You're debugging an auth issue. There's a JWT in a log line, or in an Authorization header you copied...

Dev.to · Roman
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Beacon – open-source self-hosted E2EE messenger for Android
I've been building Beacon, an open-source end-to-end encrypted messenger for Android designed for...

Dev.to · Manish.
🔐 Cybersecurity
⚡ AI Lesson
2w ago
I gave Hetty a week instead of Burp. It's good. It's not *that* good.
Roughly once a quarter some repo gets crowned "the open-source Burp killer," it lands in my feed, I...

Dev.to · szp2005
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Making "files never leave your browser" verifiable with DevTools and CSP
"Files never leave your browser" is becoming standard copy for PDF tools, image editors, and document...

Dev.to · Constantin Razinsky
🔐 Cybersecurity
⚡ AI Lesson
2w ago
UVS: a draw's fairness as a fact you can recompute — not a certificate you trust
I've built casino slot machines and gaming systems for 15 years. I mostly stayed away from...

Dev.to · Mario
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Responding to a Compromised AWS Access Key
You wake up to this email from AWS: Irregular Activity Detected for Your AWS Access Key As part of...

Dev.to · Samson Tanimawo
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Incident Automation: What to Automate, What to Leave to Humans
Incident response automation is a trap. Some things should be automated. Some things absolutely...

Dev.to · Ramsudharsan Manoharan
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Dont decode JWT on random sites - verify if they are sending it to backend servers! How though?
A JWT usually carries who you are and what you're allowed to do. When you debug one, you tend to...

Dev.to · Uhltak Therestismysecret
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Container-Signierung mit Cosign: Praxisnahe Supply‑Chain‑Sicherheit
Erfahren Sie, wie Sie Container-Images mit Cosign signieren, Schlüssel verwalten und Supply‑Chain‑Angriffe verhindern – inklusive drei praxisnahe Beispiele und

Dev.to · TiltedLunar123
🔐 Cybersecurity
⚡ AI Lesson
2w ago
If you can decode it, it was never encryption: untangling encoding, hashing, and encryption for Security+
Three words show up constantly on the SY0-701 exam and in real security work, and they get blended...

Dev.to · Yoshiki Fujiwara(藤原 善基)@AWS Community Builder
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Shipping FSx for ONTAP Audit Logs to CrowdStrike Falcon LogScale via HEC — Parser v1.1.0
Scope note: This article targets CrowdStrike Falcon LogScale HEC ingestion via Amazon FSx for ONTAP...

Dev.to · Michael
🔐 Cybersecurity
⚡ AI Lesson
2w ago
GBase 8a Security Hardening: Permissions, Password Policies, SSL Encryption, and Audit Logs
This guide provides a complete security hardening checklist for a gbase database cluster, covering...

Dev.to · Arashad Dodhiya
🔐 Cybersecurity
⚡ AI Lesson
2w ago
How Attackers Chain XSS and CSRF Across Multiple Applications: Understanding Multistage Web Attacks
One vulnerability is dangerous. Two vulnerabilities together can become catastrophic. Imagine this...

Dev.to · I Want To Learn Programming
🔐 Cybersecurity
⚡ AI Lesson
2w ago
SQL injection explained safely with a toy login
SQL injection is the classic web vulnerability, and the safest way to understand it is to break a toy login you built yourself, then fix it the right way with p

Dev.to · Akilesh
🔐 Cybersecurity
⚡ AI Lesson
2w ago
How I built a website vulnerability scanner for UAE PDPL compliance as a solo founder
I'm Akilesh Nairy, founder of Monarc (usemonarc.com) — a cybersecurity platform I've been building...

Dev.to · NTCTech
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Your DR Test Passed. The Assumptions Didn't.
The test passed. The restore completed inside the window. The workload came online. The team signed...

Dev.to · Werner Kasselman
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Hardening API Scan Boundaries in skill-scanner, with sqry as the Review Map
On 14 June 2026 I cloned cisco-ai-defense/skill-scanner, set up the locked uv environment, and worked...

Dev.to · Arzen Labs
🔐 Cybersecurity
⚡ AI Lesson
2w ago
DDoS Protection Isn't a Dashboard: The Reality of Hosting in India
DDoS Protection Isn't a Dashboard: The Reality of Hosting in India For the past 6–8 months,...

Dev.to · Rençber AKMAN
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Stage 2.1 — Core Security Concepts
From Zero to Cybersecurity Professional | Complete Roadmap Series Series: Cybersecurity ×...

Dev.to · BALASANJEEV C
🔐 Cybersecurity
⚡ AI Lesson
2w ago
How I built an automated SBOM scanner to secure my supply chain 🛡️
Supply chain security is terrifying right now. With new vulnerabilities popping up daily and...

Dev.to · hwlsniper
🔐 Cybersecurity
⚡ AI Lesson
2w ago
I Built a Privacy-First PDF Toolbox — Your Files Never Leave the Browser
Every online PDF tool I've used uploads your documents to their servers. Tax returns, contracts,...

Dev.to · Payload Playground
🔐 Cybersecurity
⚡ AI Lesson
2w ago
A free, 286-operation CyberChef alternative that runs 100% in your browser
I kept reaching for CyberChef for quick encode/decode/hash/crypto chains, but wanted something that...
Dev.to · Mahdi BEN RHOUMA
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Security Best Practices for Next.js and Supabase Applications
Comprehensive security guide for Next.js and Supabase applications. Learn RLS policies, secret management, API security, authentication hardening, and productio

Dev.to · Marina Kovalchuk
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Validating Open-Source Tool for Automating Incident Investigation in AWS/Azure Environments with On-Call Teams
Introduction Incident investigation in AWS/Azure environments is a high-stakes race...

Dev.to · soy
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Arch Linux Supply Chain Malware, repo-slopscore & AI Model Security Concerns
Arch Linux Supply Chain Malware, repo-slopscore & AI Model Security Concerns ...

Dev.to · Sorin-Doru Ipate
🔐 Cybersecurity
⚡ AI Lesson
2w ago
A safer OpenConnect workflow for Cisco AnyConnect VPNs on macOS and Linux
A safer OpenConnect workflow for Cisco AnyConnect VPNs on macOS and Linux If your...

Dev.to · platinum2high
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Building a Multi-Source Threat Intelligence Correlation Engine in Python
A SOC analyst's notes on going from "I want to learn async" to a working tool that other analysts...

Dev.to · mariatanbobo
🔐 Cybersecurity
⚡ AI Lesson
2w ago
How Myanmar Blocks Tailscale — and How to Beat It
Myanmar blocks Tailscale with a single SNI wildcard. The counter is a custom DERP relay on port 443. Here's how to build it — and what Tailscale should fix.

Dev.to · Etairos.ai
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Splunk Enterprise CVE-2026-20253: Unauthenticated RCE via PostgreSQL Sidecar
TL;DR what: CVE-2026-20253 in Splunk Enterprise versions below 10.0.7 and 10.2.4 exposes...

Dev.to · Faiz Ahmed Farooqui
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Encrypt your .env with AWS KMS: Secrets that never touch process.env
A year ago I'd have told you a .env file was fine. Then we patched a CVSS 10.0 RCE in Next.js...

Dev.to · SecURL
🔐 Cybersecurity
⚡ AI Lesson
2w ago
We scanned 10 well-known sites with our security tool. Here's what we found.
Real external security posture data from gov.uk, NHS, BBC, Stripe, GitHub — scanned with SecURL's passive analysis engine.

Dev.to · Andrei Toma
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Zero Trust for Home Labs: Bridging the Gap Between Enterprise and Enthusiast
Transition your home lab from a vulnerable 'castle-and-moat' setup to a robust Zero Trust Architecture using HookProbe's AI-native edge security and NAPSE engin

Dev.to · Izaz Ahamed
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Translating CTF Experience Into a Resume Recruiters Actually Read
If you've put in the hours on TryHackMe or HackTheBox but still aren't getting callbacks, the problem...

Dev.to · P2pb2b.cc Took $9745.10 — Total Crypto Scam
🔐 Cybersecurity
⚡ AI Lesson
2w ago
P2pb2b.cc Took $9745.10 — Total Crypto Scam
P2pb2b.cc Took $9745.10 — Total Crypto Scam The cursor hovered heavily over the "Confirm Withdrawal"...

Dev.to · Aviral Srivastava
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Kerberos Authentication Protocol
The Secret Handshake of the Digital Realm: Unpacking Kerberos Ever felt like your computer...

Dev.to · Odilon HUGONNOT
🔐 Cybersecurity
⚡ AI Lesson
2w ago
Iterative Security Audit: 45 Probes, 0 Critical, 6 Regression Tests Kept
The pre-pentest audit in successive passes. How to verify findings before panicking, and how to select which probes become permanent regression tests.

Dev.to · opscanopy
🔐 Cybersecurity
⚡ AI Lesson
2w ago
One CVE, four ignore files: unifying Trivy, Grype, Snyk and osv-scanner
You triaged the CVE. A scanner flagged CVE-2023-45853 in zlib, you read the advisory, confirmed the...
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