How Attackers Run Smishing Campaigns (And Why They Work)

This report summarizes how modern smishing campaigns are constructed and operated: attackers acquire bulk phone lists from data brokers, breaches, and exposed cloud backups, use bulk SMS gateways, spoofing tools, VoIP/SIP trunks or SIM farms to send large volumes of texts, and employ urgency and impersonation to harvest credentials or bypass SMS 2FA via real-time relay. It highlights the scale, common infrastructures, victim-facing tactics, and the business risk to organizations relying on SMS-based authentication.