Homograph attacks explained: The tiny typo that breaks trust

Homograph attacks: the tiny typo that breaks trust

Fake looks real, until it doesn't. Attackers swap characters that look the same, like m and rn, to spoof domains. Your brain fills the gap. Your guard drops. WYKYK: When you know, you act.

Quick primer

A homograph attack uses visually similar characters to trick users into thinking a fake domain is real.
Example: arnazon.com looks like amazon.com at a glance, but it’s a trap.
Attackers weaponize this illusion to steal credentials, payments, or internal access.

How to stay protected

Verify the sender. Check the actual email address, not just the display name.
Hover before you click. Mouse over links to see the real destination URL.
Look for tiny misspellings, swapped letters, extra characters, or Unicode lookalikes.
Legitimate companies use official domains, not random shortened links.

Red flags, fast

Urgent commands: “Act now!”, “Account suspended!”, “Verify immediately!”.
Generic greetings: “Dear Customer” instead of your name.
Requests for passwords, payment info, or other secrets via email.
Poor grammar, odd spacing, weird fonts, or suspicious attachments.

For security teams: make offense part of defense

Monitor for lookalike domains, and let your red team think like the attacker.
Register critical typo-variants before threat actors do.
Simulate real phishing and domain spoofing attacks to expose weak spots before adversaires find them.

This is where offense becomes your best defense.
Our ethical hackers run controlled attacks to stress-test your people, processes, and domains.
They find what automated tools miss, and turn that insight into hardened defenses.

Stay sharp, verify before you trust, and test before you assume safe.

Because, when you know, you act.

Thiery Ketz

Thiery Ketz

Co-Founder

Have more questions or just curious about future possibilities? Feel free to connect with me on LinkedIn.

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FAQ
A homograph attack uses visually similar characters (like “rn” instead of “m”) to create fake domains that look legitimate, such as arnazon.com. Attackers use these spoofed domains in phishing emails or fake login pages to steal credentials or payment data.