GNU Project Mailman Global Footprint

Top 10 Identified Countries

Country Observations Percentage
DE 1,378 34.12%
US 1,040 25.75%
GB 152 3.76%
NL 150 3.71%
FR 144 3.57%
ES 109 2.70%
AU 95 2.35%
FI 80 1.98%
CA 73 1.81%
IT 67 1.66%

Is GNU Project Mailman part of your extended attack surface? Bitsight helps security leaders rapidly identify exposure and detect threats in order to prioritize, communicate, and mitigate risk.

View interactive product tours

GNU Project Mailman Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 1,603 64.17%
Education 604 24.18%
Telecommunications 147 5.88%
Government/Politics 80 3.20%
Nonprofit/NGO 33 1.32%
Business Services 14 0.56%
Finance 10 0.40%
Utilities 3 0.12%
Manufacturing 2 0.08%
Aerospace/Defense 1 0.04%

Mailman Version Details

28 Versions Found

Mailman CVEs

Top 10 CVEs
CVE Number Number of Observations
CVE-2025-43919 2,351
CVE-2025-43920 2,351
CVE-2025-43921 2,351
CVE-2020-12108 1,788
CVE-2020-12137 1,692
CVE-2018-13796 662
CVE-2016-6893 584
CVE-2011-0707 146
CVE-2011-5024 77
CVE-2006-2941 15

Bitsight, the leading provider in Cyber Risk Management, introduced the next-generation internet scanner Bitsight Groma in May 2024. This technology continuously scans the entire internet to discover assets, collect asset attribution evidence, and identify an ever-growing set of security observations, such as vulnerabilities and misconfigurations. Groma’s scanning activities presently encompass:


  • 40 million-plus monitored organizations
  • 250 million-plus host names
  • 4 billion-plus routable IPv4 and IPv6 addresses

Greynoise’s recent study testifies the speed of Bitsight Groma.

Bitsight data discovery
Governance charcoal background

Bitsight TRACE team investigates security incidents and identifies vulnerabilities and threats.

View latest security research 

See what you’re up against across the expanding attack surface. Prioritize what matters most. And mitigate where you’re most vulnerable.

External Attack Surface Management