S4E offers flexible plans designed for individual websites through to large enterprise environments with complex security requirements.
For One Website
A self-serve plan for individuals and small teams who need continuous security monitoring for a single website.
Pricing:
| Billing | Price | Savings |
|---|---|---|
| Monthly | $10 / month | -- |
| Annual | $100 / year | Save $20 compared to monthly |
What's included:
- Continuous automated scanning -- Runs 24/7, no setup needed.
- Instant alerts -- Get notified the moment a new vulnerability is found.
- Plain-language fix guidance -- Clear remediation steps for every finding.
- 10,000+ vulnerability checks -- Including the latest CVEs.
- No agents, no installs -- Just add your domain and start scanning.
Getting started:
- Register at app.s4e.io/register.
- Add your domain.
- Start scanning immediately.
No credit card required to try. Cancel any time.
For Larger Teams & Enterprises
A custom plan for organizations with multiple assets, complex infrastructure, and advanced security needs.
Capabilities:
| Capability | Description |
|---|---|
| Multiple assets | Monitor domains, subdomains, IP addresses, and IP ranges. |
| Internal network scanning | Scan assets behind your firewall with on-premises deployment. |
| Threat intelligence | Access threat intelligence feeds and data. |
| Compliance reporting | PCI-DSS, ISO 27001, and other compliance frameworks. |
| API integration | Full REST API access for automation and integration. |
| Custom dashboards | Tailored dashboards and reporting for your organization. |
| AI-assisted scan creation | Generate custom scans using the AI Intelligence Studio. |
| AI-assisted actions | Automate remediation and response with AI-generated microservices. |
| Dedicated support | Priority support with dedicated account management. |
| MSSP / Partner support | Multi-tenant architecture for managed security service providers. |
Contact sales:
- Email: [email protected] -- Usually responds within a few hours.
Managing Your Plan
- Upgrade: Navigate to User Settings > Plans > Billing Portal to upgrade your plan through Stripe.
- Payment methods: Credit and debit cards via Stripe.
- Cancel: Cancel through the Billing Portal. Access continues until the end of your billing period.
- Custom plans: For more than 10 assets, contact [email protected] for a custom plan.
- API rate limits: Vary by plan. Higher tiers receive higher quotas. Enterprise customers can contact sales for custom limits.