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Optum

Diplomat operates as an Icelandic business entity. Without available website content or additional public information, the specific nature of its products, services, or business operations cannot be determined. UpGuard continuously monitors the security posture of Optum using open-source, commercial, and proprietary threat intelligence feeds. Our analysis is centered on objective, externally verifiable information.

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Optum Security Rating

Optum's security rating is based on the analysis of their external attack surface. The higher the rating, the better their security posture. Start a free trial to get a more in-depth risk assessment for Optum.

Company info

Optum
Company Optum Employees 310k+ Location Eden Prairie, MN, United States CEO Andrew Witty Last updated September 10, 2026

Last updated September 10, 2026

Optum Vendor Risk Report

This vendor risk report is based on UpGuard's continuous monitoring of Optum's security posture using open-source, commercial, and proprietary threat intelligence feeds. The results are summarized into a security rating based on the analysis of hundreds of individual checks across five risk categories: website security, email security, phishing & malware, brand & reputation risk, and network security.

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Website Security

Optum

Server information header not exposed

Ensuring the server information header is not exposed reduces the ability of attackers to exploit certain vulnerabilities.

X-Powered-By header not exposed

Information about specific technology used on the server is obscured.

Referrer policy is not unsafe-url

The website's Referrer Policy is not configured to allow unsafe information to be sent in the referrer header.

ASP.NET version header not exposing specific ASP.net version

Ensuring the ASP.NET version header is not exposing a specific version makes it harder for attackers to exploit certain vulnerabilities.

ASP.NET version header not exposed

Ensuring the ASP.NET version header is not exposed makes it harder for attackers to exploit certain vulnerabilities.

No unmaintained page detected

The page appears to be maintained.

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Website Security scan results table Cyber security rating score 850 out of 950

Email

Optum

DMARC policy is not p=none

DMARC reject policy provides the most effective protection against fraudulent emails being sent from a domain.

DMARC policy exists

DMARC protects against fraudulent emails being sent from a domain.

Strict SPF filtering - not using +all

Sender Policy Framework (SPF) record strictly enforces specific domains allowed to send email on its behalf.

SPF syntax correct

Sender Policy Framework (SPF) record passes basic syntax checks.

DMARC policy percentage is default

DMARC policy percentage is set to default 100%, ensuring all mail is covered by the policy.

SPF ptr mechanism not used

Sender Policy Framework (SPF) record does not include the ptr mechanism.

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Network

Optum

No ports are open

No open ports were detected.

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DNS

Optum

DNSSEC not enabled

DNSSEC records prevent third parties from forging the records that guarantee a domain's identity. DNSSEC should be configured for this domain.

No unregistered MX records detected

No unregistered MX records that could lead to receiving mail on behalf of the target organization were detected.

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Encryption

Optum

HTTPS redirect not supported

HTTPS is the standard protocol for secure communication on the internet. All redirects should be performed over HTTPS.

HTTP requests are redirected to HTTPS

All HTTP requests are redirected to HTTPS.

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IP/Domain Reputation

Optum

No reports of botnet activity in the last 30 days

This IP/domain has not been reported as a source of botnet activity in the last 30 days.

No reports of brute force login attempts in the last 30 days

This IP/domain did not appear on any list of IPs and domains known to perform brute force login attempts in the last 30 days.

No reports of malware distribution in the last 30 days

This IP/domain has been reported for distributing malware in the last 30 days.

No reports of unsolicited scanning in the last 30 days

This IP/domain has not been reported for performing unsolicited scanning in the last 30 days.

No reports of phishing activity in the last 30 days

This IP/domain has not been reported as a phishing site in the last 30 days.

No reports of botnet activity in the last 90 days

This IP/domain has not been reported as a source of botnet activity in the last 90 days.

No reports of brute force login attempts in the last 90 days

This IP/domain did not appear on any list of IPs and domains known to perform brute force login attempts in the last 90 days.

No reports of malware distribution in the last 90 days

This IP/domain has been reported for distributing malware in the last 90 days.

No reports of unsolicited scanning in the last 90 days

This IP/domain has not been reported for performing unsolicited scanning in the last 90 days.

No reports of phishing activity in the last 90 days

This IP/domain has not been reported as a phishing site in the last 90 days.

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Security reports related to Optum

Compare Optum's security performance with other companies in their industry.

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Cybersecurity & Risk Management Library

The ultimate guide to attack surface and third-party risk management – actionable advice for security teams, managers, and executives.

Free · for Optum customers & vendors

You're evaluating Optum's risk.Are attackers evaluating yours?

UpGuard runs 330+ external checks on Optum continuously. Get the same view of your own company — free, in 30 seconds.
Get my free score
Website Security scan results table Cyber security rating score 850 out of 950
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