How Hackers Steal Your Session After You Enter Your 2FA Code

You entered your password. Then your six-digit code. The real website accepted both. The attacker still got in. This is adversary-in-the-middle (AiTM) phishing — a more advanced attack that sits between you and the real login page, relays your credentials in real time, and captures the authenticated session that follows. Your 2FA code was real. The page you typed it into wasn't. ━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🕐 CHAPTERS ━━━━━━━━━━━━━━━━━━━━━━━━━━━ 0:00 Your 2FA code worked 0:19 What adversary-in-the-middle phishing is 0:48 How the attacker relays your login 1:26 The real target: your session 2:03 Tycoon2FA in the real world 2:27 Why this isn't simply "2FA cracked" 2:47 Not all MFA is equally resistant 3:25 Why passkeys are different 4:13 How to protect yourself 6:01 What to do if you already logged in 7:08 The rule to remember 7:46 The fake CAPTCHA connection ━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📌 WHAT THIS VIDEO COVERS ━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ How an AiTM phishing page sits between you and the real service ▸ Why entering a valid 2FA code doesn't prove the page is legitimate ▸ How session cookies become the attacker's real target ▸ Why one-time codes and passkeys behave differently under phishing ▸ How FIDO/WebAuthn and passkeys defend against this attack type ▸ What to do if you think you already signed in through a phishing page ━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⚠️ THE IMPORTANT NUANCE ━━━━━━━━━━━━━━━━━━━━━━━━━━━ Two-factor authentication is still extremely valuable — this video isn't an argument against using MFA. It's about understanding that different forms of MFA offer different levels of phishing resistance. A one-time code can be relayed in real time. A passkey cannot. ━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔎 SOURCES ━━━━━━━━━━━━━━━━━━━━━━━━━━━ [Microsoft / CISA / Tycoon2FA reporting links] ━━━━━━━━━━━━━━━━━━━━━━━━━━━ Also known as: AiTM phishing, adversary-in-the-middle attack, MFA bypass phishing, session hijacking, Tycoon2FA, real-time phishing proxy, phishing-resistant MFA. Telyvro explains cybersecurity, online scams and digital privacy in plain English. Digital threats. Explained.