Free Attack Surface Scan

See what attackers see — before they do.

Enter your domain below. We'll enumerate subdomains, check security headers, and show you exactly where you're exposed. Free. No signup required.

zscan — external recon
$ zscan --target 
Enter any domain — we'll map its external attack surface in seconds
sample output — acme-law.com
[*] Enumerating subdomains...
[+] Found 14 live hosts
[+] admin.acme-law.com HIGH — login portal exposed
[+] staging.acme-law.com HIGH — dev environment public
[+] api.acme-law.com MED — missing security headers
[+] mail.acme-law.com LOW — standard config

[*] 3 critical findings. Report generated.
43%
of cyberattacks target small businesses
$4.4M
average cost of a data breach (2025)
88%
of SMB breaches involved ransomware
Services

Think like an attacker. Report like an advisor.

External Attack Surface Assessment

Full subdomain enumeration, live host detection, security header analysis, email exposure discovery, and tech stack fingerprinting. See what attackers see.

FREE SCAN AVAILABLE

Web Application Pentesting

Manual, expert-led testing of your web applications. We find the vulnerabilities scanners miss and show you the real business impact.

OWASP TOP 10

API Security Testing

APIs are your biggest blind spot. We test authentication flows, authorization boundaries, data exposure, and injection vectors across your entire API surface.

FINTECH FOCUS

Continuous Monitoring

One-time tests leave you exposed 364 days a year. Ongoing attack surface monitoring catches new exposures as your infrastructure changes.

RECURRING
How It Works

From scan to secured in days, not months.

01

Free Scan

We map your external attack surface and deliver a risk-prioritized snapshot. No cost, no commitment.

02

Risk Report

Findings translated into business language. Your CEO will understand it. Your IT team can act on it.

03

Deep Test

Full penetration test on critical assets. We exploit what we find to prove real-world impact.

04

Harden

Actionable remediation guidance and optional continuous monitoring to keep your surface locked down.

Every business has an attack surface.
Most just haven't looked at theirs yet.

Zero Delta Security exists to close that gap. Real findings. Real risk. Real protection for the businesses that need it most.