SMS Phishing (Smishing) Testing

The Rise of SMS-Based Attacks

SMS phishing — or smishing — is one of the fastest-growing attack vectors in the social engineering landscape. Key factors make it particularly effective: most users are far less suspicious of text messages than emails, SMS bypasses corporate email filters entirely, text messages have significantly higher open and click rates than email, and two-factor authentication codes sent via SMS are a high-value target.

Common Smishing Scenarios

• Fake IT notifications requesting credential confirmation via a spoofed login page
• HR or payroll impersonation requesting personal information updates
• Package delivery notifications with malicious links
• Executive impersonation requesting urgent responses or information
• Two-factor authentication code harvesting via social engineering

How Grid32's Smishing Assessments Work

For smishing assessments, it's best to provide Grid32 with a list of authorized employee phone numbers — ensuring we only contact authorized targets and that message rates are managed appropriately on company-provided devices. Our engineers craft messages tailored to your organization and adapt based on results throughout the campaign.

Results are reported with the same granularity as email phishing — click rates, credential submission rates, and individual-level details where authorized.