Where the web risk sits in a SaaS business
A SaaS company lives on the public internet by design. Your marketing site, your application, your API, your docs, and your status page all sit on domains anyone can reach, and they carry your customers straight to your data and theirs. That makes the configuration of those endpoints the most exposed part of your security. An attacker does not need to breach a firewall when a weak TLS setup, a missing security header, or a permissive Content Security Policy hands them an opening from the outside.
Buyers understand this too, which is why selling SaaS upmarket now means proving your posture before a contract is signed. A security questionnaire, a vendor security review, and a request for your SOC 2 or ISO 27001 status have become a routine part of the sales cycle. The technical questions that land on your web layer are concrete. Do you enforce TLS 1.2 or higher and HSTS. Do your responses carry a real Content Security Policy and the other security headers. Are your cookies marked Secure, HttpOnly, and SameSite. Are your DNS and email records clean. Those are exactly the controls SiteSecurityScore can observe from the outside and grade in seconds.
The same controls show up in the frameworks buyers ask about. SOC 2 builds on the Trust Services Criteria, where the Security category expects encryption of data in transit and continuous monitoring of the systems you operate. ISO 27001 carries Annex A 8.24 on the use of cryptography and Annex A 8.9 on configuration management, which on the web translate to strong TLS and a hardened, consistent configuration across your endpoints. Evidence for those controls is something an auditor reviews, and a scan report is a clean way to produce it.
Posture is a sales asset, not just an audit chore. In SaaS, a strong web security grade shortens vendor reviews and removes friction from enterprise deals. SiteSecurityScore gives you that grade plus the fixes to raise it, and a PDF you can hand to a prospect on request.
SaaS web and transport requirements mapped to SiteSecurityScore
The table maps the web and transport requirements that surface in SaaS vendor reviews and in SOC 2 and ISO 27001 audits to what SiteSecurityScore checks. A green check means the scanner directly produces evidence for that area. An amber Partial means it covers part of the area and other tooling fills the rest. A red cross means the area belongs to your organizational controls, which your own systems and your auditor cover directly.
Encryption of data in transit
| Requirement area | SiteSecurityScore |
|---|---|
| TLS and SSL configuration analysis | |
| Strict Transport Security (HSTS) enforcement | |
| Certificate validity and chain verification | |
| Mixed content detection on application pages | |
| Encryption of internal service-to-service traffic | Partial |
Secure configuration of public endpoints
| Requirement area | SiteSecurityScore |
|---|---|
| Security headers (CSP, X-Frame-Options, Referrer-Policy) | |
| Content Security Policy directive review | |
| Cookie security (HttpOnly, Secure, SameSite) | |
| CORS and cross-origin configuration | |
| Subresource Integrity on external scripts |
DNS and domain trust signals
| Requirement area | SiteSecurityScore |
|---|---|
| SPF, DKIM, and DMARC email authentication records | |
| CAA records restricting certificate issuance | |
| security.txt vulnerability disclosure contact | |
| Per subdomain and API host coverage |
Continuous monitoring and change detection
| Requirement area | SiteSecurityScore |
|---|---|
| Automated daily scans of public configuration | |
| Email alerts on posture or certificate changes | |
| Historical scan records over the audit period | |
| Monitoring of internal systems and infrastructure logs | Partial |
Organizational and product security controls
| Requirement area | SiteSecurityScore |
|---|---|
| User access provisioning and access reviews | |
| Security awareness training and HR controls | |
| Application code and dependency vulnerabilities | Partial |
| Vendor risk and incident response procedures |
For the framework detail behind these rows, the SOC 2 compliance guide and the ISO 27001 compliance guide walk through how each criterion maps to a scan. The full set of frameworks lives on the compliance hub.
What SiteSecurityScore checks on a SaaS site
A single scan grades every layer a SaaS endpoint exposes, then hands back a letter grade and the exact fix for each finding. The same scan works on your marketing domain, your app subdomain, and your API host, so you can hold every property to the same bar.
Transport and headers
TLS and SSL strength, certificate validity, HSTS, and the full set of security headers including a directive level review of your Content Security Policy.
Cookies, CORS, and scripts
Cookie flags for Secure, HttpOnly, and SameSite, CORS and cross-origin rules, mixed content, and Subresource Integrity on the external scripts your app loads.
DNS and domain trust
SPF, DKIM, DMARC, and CAA records plus a security.txt disclosure contact, checked per hostname so subdomains and API hosts are covered.
Every finding ships with a copy and paste recommendation, so a failing grade turns into a worklist your engineers can clear in an afternoon. Export the result as a PDF for a buyer or an auditor, pull it through the REST API into your own dashboards, or run an authenticated page through the browser extension. When a model needs to read your posture, the MCP connector exposes the same scan to Claude Code and ChatGPT Codex.
Continuous monitoring across a fast moving product
One bad release can undo your posture. SaaS teams deploy constantly, and a single change can drop a security header, weaken a CSP, or introduce mixed content. Daily monitoring catches that drift before a buyer or an auditor does.
SiteSecurityScore monitoring runs automated scans of your TLS and SSL certificates, security headers, Content Security Policy, DNS records, and cookies every day, across every hostname you add. When anything changes or a new issue appears, you get an email alert right away. The result is a continuous record that your secure configuration held over time, which is the operating evidence a SOC 2 Type II examiner samples and the assurance an enterprise customer wants between annual reviews.
Daily scans, every endpoint
Each monitored site and subdomain is scanned once per day across TLS, headers, CSP, DNS, and cookies, building the audit trail.
Alerts on drift
Get notified when a certificate nears expiry, a security header disappears, or a release weakens your configuration.
Grade your SaaS web security
Run a free scan to capture your web and transport security baseline, fix what it flags, then turn on daily monitoring so your posture stays strong for the next buyer and the next audit. No account required to start.
Frequently asked questions
Why does web security matter so much for a SaaS company?
A SaaS product is its website. Customers reach your data, their data, and their users through the same domains and APIs you serve to the public, so the configuration of those endpoints is the front line of your security. Enterprise buyers know this, which is why they send security questionnaires and demand proof of a strong posture before they sign. Weak TLS, missing security headers, or a sloppy Content Security Policy are exactly the kind of findings that stall a deal or surface in a SOC 2 and ISO 27001 audit. SiteSecurityScore grades that web and transport layer in one scan and tells you precisely what to fix.
Which SaaS compliance controls does SiteSecurityScore help evidence?
SiteSecurityScore evidences the web and transport security technical controls that run through both SOC 2 and ISO 27001. For SOC 2 that is the Security category, the Common Criteria, where CC6 expects encryption of data in transit and CC7 expects continuous monitoring and change detection. For ISO 27001 it lines up with Annex A 8.24 on the use of cryptography and Annex A 8.9 on configuration management. In practice that means TLS and HSTS, security headers, Content Security Policy, hardened cookies, CORS, and clean DNS records, all graded with copy and paste fixes.
Can I share a SiteSecurityScore report during a vendor security review?
Yes. A prospect running a vendor security review wants concrete proof, not assurances. A SiteSecurityScore scan produces a letter grade and a detailed report of your TLS configuration, HSTS, security headers, CSP, cookies, CORS, and DNS records, and you can export it as a clean PDF. Hand that to a buyer or attach it to a security questionnaire response to show your public endpoints enforce encryption in transit and secure configuration. Pair it with daily monitoring records so you can show the posture holds over time, not just on the day they asked.
How does SiteSecurityScore fit into our SOC 2 or ISO 27001 program?
It covers the externally observable technical controls and frees your team to focus on everything else. Run a scan to capture a baseline, fix what it flags, then turn on daily monitoring so the configuration is checked every day across the audit period. When the auditor asks for evidence that your public endpoints enforce TLS and carry the right security headers, you export PDF reports and pull the monitoring history. Your access reviews, vendor management, and incident response procedures still live in your own systems, and your auditor reviews those directly.
Does SiteSecurityScore check our API endpoints and subdomains too?
A SaaS footprint is rarely one domain. You typically run a marketing site, an app subdomain, an API host, a docs site, and a status page, and each one needs its own TLS, headers, and DNS hygiene. SiteSecurityScore scans any hostname you point it at, so you can grade your API endpoints and every subdomain the same way you grade the main site. Monitoring then watches each of them daily and alerts you when a certificate nears expiry or a header drifts on any one of them.
Is SiteSecurityScore free for a SaaS team to use?
The core scanner is free with no account required. You can run a full scan covering security headers, TLS and SSL, DNS records, Content Security Policy, cookies, CORS, security.txt, mixed content, and Subresource Integrity on external scripts. Paid plans add continuous daily monitoring with email alerts, PDF report exports, REST API access, and higher scan limits, which are the features SaaS teams reach for when they are assembling audit evidence or watching a fleet of subdomains.
How do we keep our SaaS security posture from slipping over time?
A fast moving SaaS deploys constantly, and a single bad release can drop a security header, weaken a CSP, or expose mixed content without anyone noticing. SiteSecurityScore monitoring runs automated daily scans of your TLS, headers, CSP, DNS, and cookies and emails an alert the moment something changes. That turns posture from a once a year scramble before an audit into a steady signal your team can act on, and it gives you the continuous record that a SOC 2 Type II examiner samples.