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.

Why Mobile Is Harder to Defend

Text-based attacks succeed partly because mobile devices strip away the warning signs people rely on. Truncated links hide their real destination, there is no hover preview, and messages arrive in the same trusted thread as legitimate notifications. Employees also react to texts faster and with less scrutiny than email. Smishing testing measures behavior in exactly this channel, so training can address the mobile habits that desktop-focused awareness programs miss.

Frequently Asked Questions

What is smishing (SMS phishing) testing?

Smishing testing sends controlled phishing text messages to employees to measure who clicks links or shares information. As more work happens on mobile devices, SMS has become a common attack channel that email-only testing overlooks.

Why are SMS-based attacks increasing?

People trust and react quickly to text messages, mobile interfaces hide warning signs, and phone numbers are easy to obtain. Attackers exploit that immediacy, which is why testing this channel matters.

How does Grid32 run smishing assessments?

Grid32 designs realistic text scenarios within scope, tracks who engages, and reports results with recommendations. Findings feed targeted training and stronger mobile-aware security awareness.