Marathon Petroleum logo

Marathon Petroleum

Marathon Petroleum operates petroleum refineries and markets transportation fuels, asphalt, and petrochemicals across the United States. The company also manages a midstream business that transports, stores, and distributes crude oil and refined products through an extensive pipeline network. UpGuard continuously monitors the security posture of Marathon Petroleum using open-source, commercial, and proprietary threat intelligence feeds. Our analysis is centered on objective, externally verifiable information.

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Marathon Petroleum Security Rating

Marathon Petroleum'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 Marathon Petroleum.

Company info

Marathon Petroleum
Company Marathon Petroleum Employees 18k+ Location Findlay, OH, United States CEO Michael J. Hennigan Last updated May 2, 2026

Last updated May 2, 2026

Marathon Petroleum Vendor Risk Report

This vendor risk report is based on UpGuard's continuous monitoring of Marathon Petroleum'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

Marathon Petroleum

Server information header exposed

Exposing information about the server version increases the ability of attackers to exploit certain vulnerabilities. The website configuration should be changed to prevent version information being revealed in the 'server' header.

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Email

Marathon Petroleum

DMARC policy is p=none

DMARC policy is p=none. This provides no protection against fraudulent emails. The DMARC policy should be migrated to p=quarantine, and eventually p=reject.

DMARC policy exists

DMARC protects against fraudulent emails being sent from a domain.

SPF enabled

Sender Policy Framework (SPF) records prevent spammers from sending messages with forged addresses.

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.

SPF ptr mechanism not used

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

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Network

Marathon Petroleum

'HTTP' port open

The 'HTTP' service is running and exposed to the internet. The configuration of the server should be reviewed and unnecessary ports closed.

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DNS

Marathon Petroleum

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.

Domain registrar or registry deletion protection not enabled

Domain is not protected from unsolicited deletion requests with the registrar or registry. The domain should have clientDeleteProhibited or serverDeleteProhibited set.

Domain registrar or registry update protection not enabled

Domain is not protected from unsolicited update requests with the registrar or registry. The domain should have clientUpdateProhibited or serverUpdateProhibited set.

CAA not enabled

The domain does not contain a valid Certification Authority Authorization (CAA) record. A CAA record indicates which Certificate Authorities (CAs) are authorized to issue certificates for a domain.

No unregistered MX records detected

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

Domain has not expired

Domain has not expired.

Domain does not expire soon

Domain does not expire within 30 days.

Domain not flagged as inactive

Domain is not flagged as inactive.

Domain not pending deletion

Domain is not pending deletion with the registrar.

Domain not pending restoration

Domain is not pending restoration with the registrar.

Domain registrar or registry transfer protection enabled

Domain is protected from unsolicited transfer requests.

Domain free of registrar DNS resolution hold

Domain is not under a DNS resolution hold with the registrar.

Domain free of registry DNS resolution hold

Domain is not under a DNS resolution hold with the registry itself.

Domain renewal not prohibited by registry

Domain is not prohibited from renewal at the registry itself.

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Encryption

Marathon Petroleum

HTTP Strict Transport Security (HSTS) not enforced

Without HSTS enforced, people browsing this site are more susceptible to man-in-the-middle attacks. The server should be configured to support HSTS.

Insecure SSL/TLS versions available

Any version of the SSL protocol, and TLS prior to version 1.2, are now considered insecure. The server should disable support for these old protocols.

Weak cipher suites supported in TLS 1.2

Weak cipher suites can potentially be broken by a well resourced attacker, and should not be supported by the server unless very old devices or browsers must be supported.

Certificate not found on our revoked certificate list

The site's certificate chain was checked against our list of revoked certificates.

SSL available

SSL is supported for this site.

HTTP requests are redirected to HTTPS

All HTTP requests are redirected to HTTPS.

Hostname matches SSL certificate

The site's hostname matches the SSL certificate.

SSL has not expired

SSL certificate has not expired.

Trusted SSL certificate

The certificate presented by this domain was issued by a trusted certificate authority.

SSL certificate chain present in server response

A complete SSL certificate chain was presented by the server for this domain.

SSL chain certificates do not expire within 20 days

SSL intermediate and root certificates do not expire within 20 days.

SSL expiration period shorter than 398 days

The SSL certificate presented by the server has an expiration period shorter than 398 days.

SSL has more than 20% of its valid period remaining

SSL certificate does not expire in less than 20% of its total valid period.

Strong SSL algorithm

Industry standard SHA-256 encryption in use.

Strong Diffie-Hellman prime used in key exchange

TLS connections to the site use a strong Diffie-Hellman prime during key exchange.

Strong public certificate key length

The site's public certificate provides at least 112 bits of security strength.

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Data leakage

Marathon Petroleum

No infostealer malware detected

Our scans have not found any evidence of infostealer malware infections associated with this organisation's domain.

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IP/Domain Reputation

Marathon Petroleum

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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Vulnerability Management

Marathon Petroleum

End-of-life version of NGINX detected

The detected version of NGINX is end of life. The product will likely not receive security updates from the vendor moving forward.

NGINX 1.20.1 has potential vulnerabilities

NGINX 1.20.1 has vulnerabilities which might be exploitable under certain conditions. Affected domains should be checked to determine which vulnerabilities might pose a risk.

Not vulnerable to CVE-2014-0160 (Heartbleed)

A bug in OpenSSL's implementation of the TLS heartbeat extension allows access to portions of memory on the targeted host e.g. cryptographic keys and passwords.

Not vulnerable to CVE-2014-3566 (POODLE)

The server does not support SSLv3, and is not vulnerable to the POODLE attack.

Not vulnerable to CVE-2015-0204 (FREAK)

The server does not offer RSA_EXPORT cipher suites, so clients are not vulnerable to the FREAK attack.

Not vulnerable to CVE-2015-4000 (Logjam)

The server is using strong Diffie-Hellman parameters and is not vulnerable to the Logjam attack.

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Security reports related to Marathon Petroleum

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

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