Proximus logo

Proximus

Proximus is a telecommunications provider operating in Belgium that offers mobile, internet, and television services to residential and business customers. The company also provides ICT solutions, cloud services, and cybersecurity products to enterprise clients. UpGuard continuously monitors the security posture of Proximus using open-source, commercial, and proprietary threat intelligence feeds. Our analysis is centered on objective, externally verifiable information.

Start a free trial for full access

Proximus Security Rating

Proximus'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 Proximus.

Company info

Proximus
Company Proximus Employees 13k+ Location Saint-Josse-ten-Noode, Belgium Last updated April 22, 2026

Last updated April 22, 2026

Proximus Vendor Risk Report

This vendor risk report is based on UpGuard's continuous monitoring of Proximus'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.

Start a free trial for full access

Website Security

Proximus

Secure cookies not used

When secure cookies are not used, there is an increased risk of third parties intercepting information contained in these cookies. The website configuration should be changed so that all 'Set-Cookie' headers include 'secure'.

X-Frame-Options is not deny or sameorigin

Browsers may display this website's content in frames. This can lead to clickjacking attacks.

CSP is not implemented

No valid Content Security Policy is implemented. This increases the risk of XSS and clickjacking attacks.

HttpOnly cookies not used

When HttpOnly cookies are not used, the cookies can be accessed on the client, which enables certain type of client-side attacks. The website configuration should be changed to enforce HttpOnly cookies.

X-Content-Type-Options is not nosniff

Browsers may interpret files as a different MIME type than what is specified in the Content-Type HTTP header. This can lead to MIME confusion attacks.

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.

Start a free trial for full access

Email

Proximus

DMARC policy is p=quarantine

The DMARC policy should be set to p=reject for maximum protection.

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.

Start a free trial for full access

Network

Proximus

No ports are open

No open ports were detected.

Start a free trial for full access

DNS

Proximus

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.

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.

No subdomain takeover vulnerability detected

No dangling DNS records that could lead to subdomain takeover were detected.

Start a free trial for full access

Encryption

Proximus

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.

Domain was not found on the HSTS preload list

The domain was not found on the HSTS preload list. Users who visit the website for the first time will be vulnerable to MITM attacks. The requirements for inclusion on the preload list are specified by hstspreload.org.

Weak Diffie-Hellman prime used in key exchange

Weak Diffie-Hellman primes can potentially be broken by organized groups or nation-state actors, allowing passive eavesdropping on traffic. It is recommended to use a 2048-bit or stronger Diffie-Hellman prime.

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.

No insecure SSL/TLS versions available

No insecure SSL/TLS versions are available for this site.

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.

HSTS header contains includeSubDomains

The HTTP Strict Transport Security (HSTS) header contains the includeSubDomains directive.

Strong public certificate key length

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

Start a free trial for full access

Data leakage

Proximus

Infostealer malware detected (Provisional)

Infostealer malware has been detected on systems associated with this organization, indicating a potential data breach.

No open cloud storage service detected

No cloud storage service configured to allow anonymous file listing was detected.

Domain index is not a listable directory

The domain index is not a listable directory.

Start a free trial for full access

IP/Domain Reputation

Proximus

Not a suspected malware provider

This website does not appear to contain malicious code.

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.

Not suspected of unwanted software

This website does not appear to be attempting to install unwanted software.

Not a suspected phishing page

This site does not appear to be a forgery or imitation of another website.

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.

Start a free trial for full access

Vulnerability Management

Proximus

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.

Start a free trial for full access

Security reports related to Proximus

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

View all security reports

Cybersecurity & Risk Management Library

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

Free instant security score

How secure is your organization?

Request a free cybersecurity report to discover key risks on your website, email, network, and brand.
  • Instant insights you can act on immediately
  • Hundreds of risk factors including email security, SSL, DNS health, open ports and common vulnerabilities
Free score
Website Security scan results table Cyber security rating score 850 out of 950