Would you recognize
this email?

Real phishing simulations. Interactive training. No corporate fluff.
Build your instincts against phishing & social engineering — for free.

12+ Interactive Lessons
500+ Real Phishing Cases
100% Free & Open Source

Everything you need to
fight back

📚

Interactive Lessons

Short, focused lessons on homographs, URL shorteners, spoofing, social engineering and more. Each ends with an adaptive quiz.

Explore lessons →
🎯

Red Flag Trainer

Real vs fake emails side by side. Click the suspicious parts before time runs out. The most addictive way to build your instincts.

Start training →
🏆

Badges & Levels

Earn badges as you progress. From Phish Spotter to Human Firewall. Track your level and share your achievements.

See badges →

Pick your first lesson

Beginner ⏱ 5 min

Homograph Attacks

Learn how attackers use lookalike characters to fake domains. pаypal.com vs paypal.com — can you tell?

Start lesson →
Beginner ⏱ 4 min

URL Shorteners

bit.ly/xK9z2 — where does that actually go? Understand how shortened URLs are used to hide malicious destinations.

Start lesson →
Intermediate ⏱ 7 min

Social Engineering

Urgency. Authority. Fear. How attackers manipulate your emotions to bypass your logic. Recognize it before it's too late.

Start lesson →
View all lessons →

Already clicked?
Here's what to do.

Most training stops at detection. We go further. Learn the exact steps to take after falling for a phishing attack — because anyone can make a mistake.

Read the guide →
01

Disconnect immediately

Cut your internet connection to prevent further data exfiltration.

02

Change your passwords

Start with email and banking — use a different device if possible.

03

Report the incident

Alert your IT team or security contact. Speed matters.

04

Enable 2FA everywhere

Add a second layer of protection to all critical accounts.

Ready to become a
Human Firewall?

Free. Open source. No tracking. Just training.

Create your account →

Or contribute on GitHub ↗