What is ARP Spoofing? How the attack poisons your network

Thu, 10 Sep 2026 10:00:00 -0300

You are on a corporate network, or in a cafe with Wi-Fi. Everything looks normal: the laptop connects, the browser opens, email works. What you do not know is that someone on the same network is intercepting every packet you send before forwarding it on to its destination. That is ARP Spoofing — a silent attack operating at a layer most people never think to protect.

What the ARP protocol is and why it matters

ARP stands for Address Resolution Protocol. It exists to solve a basic communication problem on local networks: a device knows the destination IP address (192.168.1.1, say), but to send the physical packet across the network it needs the MAC address — the unique identifier of the other device's network card.

Fake public Wi-Fi: how the evil twin attack steals your passwords

Thu, 16 Jul 2026 09:00:00 -0300

You're at the airport, flight delayed, battery in the red. You see the "AirportFree" network available — the same one you use in that terminal every time — and you connect without thinking. Thirty metres away, someone with a laptop and a device the size of a router is watching every request that leaves your phone. That's an evil twin attack: simple to set up, invisible to the victim and devastating if you're logging into anything.

Man-in-the-Middle on Locodigital

What is ARP Spoofing? How the attack poisons your network

What the ARP protocol is and why it matters

Fake public Wi-Fi: how the evil twin attack steals your passwords