diff --git a/tools/cve_cna_security_advisories/cna_count_per_cve.rb b/tools/cve_cna_security_advisories/cna_count_per_cve.rb
new file mode 100755
index 0000000..c48ed6c
--- /dev/null
+++ b/tools/cve_cna_security_advisories/cna_count_per_cve.rb
@@ -0,0 +1,17 @@
+#!/usr/bin/env ruby
+# this will loop through each year and for each CVE-ID and count the assigners
+require 'json'
+
+files = Dir['../cvelist/*/*/*.json']
+results = files.map do |fp|
+  f = File.read(fp);
+  json = JSON.parse(f);
+  assigner = json.dig('CVE_data_meta', 'ASSIGNER')
+  id = json.dig('CVE_data_meta', 'ID')
+  [id, assigner]
+end
+
+sorted_and_grouped_cnas = results.map { |cve_id, cna_email| cna_email}.sort.group_by(&:itself) 
+cna_count_per_cves = sorted_and_grouped_cnas.map {|k,v| [k, v.count]}.sort_by{|a,b|b}.reverse
+
+cna_count_per_cves.map {|cna, count| puts "CNA: #{cna}, COUNT: #{count}"}
diff --git a/tools/cve_cna_security_advisories/cna_count_per_cve.txt b/tools/cve_cna_security_advisories/cna_count_per_cve.txt
new file mode 100644
index 0000000..ff51b27
--- /dev/null
+++ b/tools/cve_cna_security_advisories/cna_count_per_cve.txt
@@ -0,0 +1,193 @@
+CNA: cve@mitre.org, COUNT: 144427
+CNA: secalert@redhat.com, COUNT: 9077
+CNA: secure@microsoft.com, COUNT: 7405
+CNA: secalert_us@oracle.com, COUNT: 7012
+CNA: psirt@cisco.com, COUNT: 4889
+CNA: psirt@us.ibm.com, COUNT: 4687
+CNA: product-security@apple.com, COUNT: 4353
+CNA: psirt@adobe.com, COUNT: 4105
+CNA: security@android.com, COUNT: 3178
+CNA: cert@cert.org, COUNT: 2831
+CNA: ics-cert@hq.dhs.gov, COUNT: 2015
+CNA: vultures@jpcert.or.jp, COUNT: 1920
+CNA: product-security@qualcomm.com, COUNT: 1890
+CNA: security-advisories@github.com, COUNT: 1819
+CNA: security@google.com, COUNT: 1747
+CNA: security@mozilla.org, COUNT: 1411
+CNA: talos-cna@cisco.com, COUNT: 1243
+CNA: psirt@huawei.com, COUNT: 1168
+CNA: zdi-disclosures@trendmicro.com, COUNT: 1104
+CNA: support@hackerone.com, COUNT: 1040
+CNA: contact@wpscan.com, COUNT: 957
+CNA: secure@intel.com, COUNT: 945
+CNA: security@apache.org, COUNT: 843
+CNA: jenkinsci-cert@googlegroups.com, COUNT: 742
+CNA: chrome-cve-admin@google.com, COUNT: 729
+CNA: security-alert@hpe.com, COUNT: 728
+CNA: hp-security-alert@hp.com, COUNT: 721
+CNA: cna@sap.com, COUNT: 700
+CNA: security_alert@emc.com, COUNT: 668
+CNA: productcert@siemens.com, COUNT: 662
+CNA: security@debian.org, COUNT: 631
+CNA: PSIRT-CNA@flexerasoftware.com, COUNT: 488
+CNA: report@snyk.io, COUNT: 469
+CNA: f5sirt@f5.com, COUNT: 467
+CNA: sirt@juniper.net, COUNT: 461
+CNA: cybersecurity@schneider-electric.com, COUNT: 453
+CNA: security@microfocus.com, COUNT: 404
+CNA: security@huntr.dev, COUNT: 379
+CNA: psirt@nvidia.com, COUNT: 367
+CNA: vulnreport@tenable.com, COUNT: 355
+CNA: secure@dell.com, COUNT: 340
+CNA: security@atlassian.com, COUNT: 326
+CNA: cve@gitlab.com, COUNT: 316
+CNA: security@ubuntu.com, COUNT: 294
+CNA: security@trendmicro.com, COUNT: 293
+CNA: security@vmware.com, COUNT: 285
+CNA: psirt@fortinet.com, COUNT: 283
+CNA: secure@symantec.com, COUNT: 271
+CNA: cve@cert.org.tw, COUNT: 260
+CNA: psirt@mcafee.com, COUNT: 245
+CNA: mobile.security@samsung.com, COUNT: 242
+CNA: psirt@lenovo.com, COUNT: 197
+CNA: security@wordfence.com, COUNT: 178
+CNA: psirt@paloaltonetworks.com, COUNT: 160
+CNA: security@synology.com, COUNT: 158
+CNA: cve-assign@distributedweaknessfiling.org, COUNT: 157
+CNA: security@qnap.com, COUNT: 150
+CNA: vuln@krcert.or.kr, COUNT: 135
+CNA: vulnerability@kaspersky.com, COUNT: 126
+CNA: secteam@freebsd.org, COUNT: 123
+CNA: security@tibco.com, COUNT: 120
+CNA: cve@rapid7.com, COUNT: 119
+CNA: cve-assign@fb.com, COUNT: 116
+CNA: info@cert.vde.com, COUNT: 115
+CNA: vulnerabilitylab@whitesourcesoftware.com, COUNT: 114
+CNA: psirt@zte.com.cn, COUNT: 94
+CNA: security@eclipse.org, COUNT: 93
+CNA: security@elastic.co, COUNT: 91
+CNA: security@suse.com, COUNT: 87
+CNA: security-alert@netapp.com, COUNT: 86
+CNA: cve@checkpoint.com, COUNT: 71
+CNA: cybersecurity@ch.abb.com, COUNT: 70
+CNA: PSIRT@sonicwall.com, COUNT: 68
+CNA: sirt@brocade.com, COUNT: 67
+CNA: psirt@amd.com, COUNT: 66
+CNA: larry0@me.com, COUNT: 66
+CNA: psirt@hcl.com, COUNT: 63
+CNA: vuln@ca.com, COUNT: 60
+CNA: security@pivotal.io, COUNT: 58
+CNA: security-officer@isc.org, COUNT: 54
+CNA: vulnerabilities@zephyrproject.org, COUNT: 45
+CNA: security@puppet.com, COUNT: 45
+CNA: psirt@bosch.com, COUNT: 45
+CNA: cve-requests@bitdefender.com, COUNT: 45
+CNA: audit@patchstack.com, COUNT: 45
+CNA: security@drupal.org, COUNT: 44
+CNA: psirt@autodesk.com, COUNT: 44
+CNA: security@kubernetes.io, COUNT: 41
+CNA: patrick@puiterwijk.org, COUNT: 41
+CNA: security@php.net, COUNT: 37
+CNA: cna@mongodb.com, COUNT: 37
+CNA: security@mediatek.com, COUNT: 35
+CNA: secure@blackberry.com, COUNT: 35
+CNA: openssl-security@openssl.org, COUNT: 35
+CNA: security@otrs.com, COUNT: 34
+CNA: psirt@solarwinds.com, COUNT: 34
+CNA: securityalerts@avaya.com, COUNT: 32
+CNA: security@xen.org, COUNT: 32
+CNA: Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp, COUNT: 32
+CNA: security@joomla.org, COUNT: 31
+CNA: cve@aliasrobotics.com, COUNT: 29
+CNA: security@jfrog.com, COUNT: 24
+CNA: productsecurity@jci.com, COUNT: 24
+CNA: cve-coordination@incibe.es, COUNT: 24
+CNA: security@zoom.us, COUNT: 22
+CNA: psirt@esri.com, COUNT: 22
+CNA: disclosures@gallagher.com, COUNT: 22
+CNA: cve-notifications-us@f-secure.com, COUNT: 22
+CNA: browser-security@yandex-team.ru, COUNT: 21
+CNA: security@vaadin.com, COUNT: 20
+CNA: security@teradici.com, COUNT: 20
+CNA: security@xiaomi.com, COUNT: 19
+CNA: vulnerability@ncsc.ch, COUNT: 18
+CNA: cybersecurity@dahuatech.com, COUNT: 18
+CNA: cve-request@iojs.org, COUNT: 18
+CNA: security@odoo.com, COUNT: 17
+CNA: security@documentfoundation.org, COUNT: 17
+CNA: product-cna@github.com, COUNT: 16
+CNA: VulnerabilityReporting@secomea.com, COUNT: 16
+CNA: cna@cyber.gov.il, COUNT: 15
+CNA: security@acronis.com, COUNT: 14
+CNA: security@zyxel.com.tw, COUNT: 13
+CNA: responsibledisclosure@mattermost.com, COUNT: 13
+CNA: CybersecurityCOE@eaton.com, COUNT: 13
+CNA: psirt@forcepoint.com, COUNT: 12
+CNA: psirt@arista.com, COUNT: 12
+CNA: vuln@vdoo.com, COUNT: 11
+CNA: security@oppo.com, COUNT: 11
+CNA: security-info@sgi.com, COUNT: 11
+CNA: psirt-info@cyber.jp.nec.com, COUNT: 11
+CNA: cve@navercorp.com, COUNT: 11
+CNA: security@salesforce.com, COUNT: 10
+CNA: security@openvpn.net, COUNT: 10
+CNA: security@octopus.com, COUNT: 10
+CNA: cybersecurity@hitachienergy.com, COUNT: 10
+CNA: security@search-guard.com, COUNT: 9
+CNA: security@craftersoftware.com, COUNT: 9
+CNA: security-report@netflix.com, COUNT: 9
+CNA: security-alert@sophos.com, COUNT: 9
+CNA: cna@cloudflare.com, COUNT: 9
+CNA: sirt@silver-peak.com, COUNT: 8
+CNA: psirt@sick.de, COUNT: 8
+CNA: help@fluidattacks.com, COUNT: 8
+CNA: psirt@wdc.com, COUNT: 7
+CNA: disclosure@synopsys.com, COUNT: 7
+CNA: cve@usom.gov.tr, COUNT: 7
+CNA: security@mautic.org, COUNT: 6
+CNA: security@duo.com, COUNT: 6
+CNA: security@360.cn, COUNT: 6
+CNA: jordan@liggitt.net, COUNT: 6
+CNA: infosec@edk2.groups.io, COUNT: 6
+CNA: dl_cve@linecorp.com, COUNT: 6
+CNA: disclose@cybersecurityworks.com, COUNT: 6
+CNA: cert@airbus.com, COUNT: 6
+CNA: sep@nlnetlabs.nl, COUNT: 5
+CNA: responsible-disclosure@pingidentity.com, COUNT: 5
+CNA: psirt@mirantis.com, COUNT: 5
+CNA: product-security@axis.com, COUNT: 5
+CNA: josh@bress.net, COUNT: 5
+CNA: info@appcheck-ng.com, COUNT: 5
+CNA: cve_disclosure@tech.gov.sg, COUNT: 5
+CNA: security@zabbix.com, COUNT: 4
+CNA: security@tcpdump.org, COUNT: 4
+CNA: security@opera.com, COUNT: 4
+CNA: security@fidelissecurity.com, COUNT: 4
+CNA: psirt@thalesgroup.com, COUNT: 4
+CNA: cve@zscaler.com, COUNT: 4
+CNA: security@vivo.com, COUNT: 3
+CNA: security@pega.com, COUNT: 3
+CNA: security@m-files.com, COUNT: 3
+CNA: security@eset.com, COUNT: 3
+CNA: securities@openeuler.org, COUNT: 3
+CNA: prodsec@nozominetworks.com, COUNT: 3
+CNA: hsrc@hikvision.com, COUNT: 3
+CNA: cybersecurity@hitachi-powergrids.com, COUNT: 3
+CNA: cve@forums.swift.org, COUNT: 3
+CNA: security@snowsoftware.com, COUNT: 2
+CNA: security@netgear.com, COUNT: 2
+CNA: product.security@lge.com, COUNT: 2
+CNA: iletisim@usom.gov.tr, COUNT: 2
+CNA: cybersecurity@bd.com, COUNT: 2
+CNA: SecurityResponse@netmotionsoftware.com, COUNT: 2
+CNA: vulnerability@cspcert.ph, COUNT: 1
+CNA: vdisclose@cert-in.org.in, COUNT: 1
+CNA: security@replicated.com, COUNT: 1
+CNA: security@devolutions.net, COUNT: 1
+CNA: security@deepsurface.com, COUNT: 1
+CNA: secure@ea.com, COUNT: 1
+CNA: psirt@tigera.io, COUNT: 1
+CNA: psirt@okta.com, COUNT: 1
+CNA: psirt@forgerock.com, COUNT: 1
+CNA: csirt@divd.nl, COUNT: 1
+CNA: Alibaba-CNA@list.alibaba-inc.com, COUNT: 1