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IndustryOriginGlobal rankRank in United States
Updated at The higher the score, the more externally observable protections the system has recorded. This page does not certify that the website is reputable, legitimate, or completely free of vulnerabilities.
As of August 30, 2026 at 05:03, www.mayoclinic.com has a security score of 89.6/100 (grade B – “Good”). CyStack’s automated assessment recorded 8 issues to review after completing 100% of applicable checks. The website owner should address “DMARC blocking policy” first, then review the remaining items in order of impact.
At assessment time, CyStack did not find www.mayoclinic.com or related infrastructure on any scam, phishing, or malware warning list after checking 5 online reputation sources. This result reflects external observations; it does not guarantee absolute safety or verify the organization’s legal status or reputation.
Check whether the website uses a secure connection and whether its HTTPS certificate remains valid.
Frequently asked questions
A valid SSL certificate still does not prove that www.mayoclinic.com is safe, legitimate, or free of scam signals. For a more complete assessment, this report also checks phishing and malware, exposed email records, IPs and open ports, subdomains, technologies, and CVEs that may apply to observed versions.
www.mayoclinic.com used a valid SSL certificate at assessment time, valid until February 4, 2027. This status may change when the certificate expires or the server configuration changes.
Review HTTPS and certificateData sources
CyStack compiles scan results from its internal cybersecurity monitoring systems, including CyStack VulnScan and CyStack Threat Intelligence, together with publicly available Internet data. The assessment only observes and analyzes information already available; it does not attempt unauthorized access, test passwords, send exploit code, or change or disrupt the assessed system.
CyStack VulnScan continuously discovers assets, validates vulnerabilities, and helps security teams prioritize remediation across the enterprise.
These 3 failed checks or warnings have the greatest impact on the result for www.mayoclinic.com.
Why it matters
A policy of quarantine or reject tells receiving services to move suspicious mail to spam or refuse it. A monitoring-only policy (p=none) records the problem but does not ask receivers to stop spoofed mail.
What to do
After every legitimate sender passes DMARC, move gradually to quarantine and then reject, covering 100% of messages.
Evidence and check scope
References
Why it matters
HTTP Strict Transport Security (HSTS) tells a browser to use HTTPS automatically on future visits. This reduces the chance that a visitor is downgraded to an unencrypted connection.
What to do
After confirming that every required page works over HTTPS, send the Strict-Transport-Security header on all HTTPS responses.
Scope of this check
Why it matters
Sender Policy Framework (SPF) lists the systems allowed to send email for the domain. Without it, receiving services have less evidence to distinguish legitimate mail from spoofed mail.
What to do
Publish one SPF TXT record that includes every legitimate email service and no unauthorized sender.
Evidence and check scope
Identify website protection and check whether public IPs appear on warning lists.
| Hosting or network provider | DroneBL | Mailspike | PSBL | SpamCop | blocklist.de | Spamhaus |
|---|---|---|---|---|---|---|
| 129.176.1.88 | Not listed | Not listed | Not listed | Not listed | Not listed | Unavailable |
Check domain and email settings that help prevent brand impersonation.
There are currently 10 exposed email records matching the mayoclinic.com domain. These records may be old or already resolved. The website owner should verify them before resetting passwords or locking related accounts.
Review exposed email recordsThe assessment identified 4 technologies on www.mayoclinic.com, but no version was reliable enough for accurate CVE matching.
Review technologies and CVEsThe assessment observed 1 public IPs and 4 open ports for www.mayoclinic.com. An open port is not the same as a vulnerability, but the website owner should keep every public service updated and appropriately restrict access.
Review IPs and open portsThe assessment observed 77+ public subdomains of mayoclinic.com. This list can reveal additional entry points such as APIs, administration systems, or test environments, but it does not mean that every subdomain is risky.
Review discovered subdomainsThis check only evaluates the homepage response and content that the scanner could reach. Other pages and sign-in flows may use different settings.
Evidence and check scope
References
Recently completed assessments, prioritizing websites with a similar sector, country or security grade for easier comparison.
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