OTX Threat: Error 524 Decoy: Unmasking a Global Smishing Operation Hiding Behind Error Pages

A sophisticated smishing and phishing operation active since the second half of 2025 has impersonated over 267 brands across 72 countries, with particular concentration in Latin America. The campaign generated 4,389 phishing domain instances, with Mexico accounting for 1,851 cases. Telecommunications is the most targeted sector with 1,754 instances, followed by financial services and consumer rewa Sectors: Telecommunications, Finance, Retail