Punycode: The invisible cyber threat hiding in plain sight
The internet was conceived to connect the world, and internationalized domain names (IDNs) have certainly helped make that vision a reality. By allowing non-ASCII characters in web addresses, they’ve been pivotal in improving both accessibility and inclusivity.
As with any technological breakthrough, cybercriminals have found a way to turn innovation into exploitation. By using Punycode, a system for encoding IDNs, attackers have been able to create their own deceptive domains to mimic trusted brands and evade traditional security defenses to fool even the most wary users.