🎯 What is a Man-in-the-Middle (MITM) Attack?
A Man-in-the-Middle (MITM) Attack is a network security attack where attackers secretly intercept and relay communications between two parties who believe they're communicating directly. This allows them to eavesdrop, steal data, or manipulate transactions in real-time.
🔍 How it works:
1. 🎣 The attacker positions themselves between the victim and the target:• ARP spoofing — sends fake ARP messages to link attacker MAC to victim IP
• DNS poisoning — redirects domain to attacker-controlled IP
• WiFi eavesdropping — creates malicious hotspots
• SSL stripping — downgrades HTTPS to HTTP
2. 🔓 The victim connects through the attacker's device.
3. 📡 All traffic flows through the attacker:• Eavesdropping — reading unencrypted traffic
• Data theft — extracting credentials, session tokens
• Modification — altering transaction data
• Injection — adding malicious code to responses
4. 💰 The attacker can:• Steal banking credentials
• Hijack sessions
• Modify payments
• Inject malware
Types:
• ARP Poisoning — mapping attacker's MAC to victim's IP
• SSL Stripping — forcing HTTP instead of HTTPS
• WiFi Evil Twin — fake access points
• DNS Hijacking — poisoned DNS responses
• HTTPS Spoofing — fake certificates
Real Examples:
• Firesheep (2010) — session hijacking on public WiFi
• DigiNotar (2011) — fake SSL certificates
• Superfish (2015) — pre-installed root certificates
⚠️ Why it's dangerous:
– Silent interception
– Bypasses encryption if improperly implemented
– Enables credential theft
– Financial fraud vector
💡 Defense Tips:
– Use HTTPS — always verify certificates
– HSTS — HTTP Strict Transport Security
– Certificate pinning — validate specific certs
– VPN on public WiFi — encrypt all traffic
– DNSSEC — prevent DNS spoofing
– ARP spoofing detection — use detection tools
– Don't use public WiFi for sensitive transactions
#NetworkSecurity #MITM #CyberAttack #ArpPoisoning #InfoSec #InfoSecTube #Web3Security
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1June 10, 2026 282 1
