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Comparison Overview

Marsh McLennanMarsh McLennan
VS
MizuhoMizuho
Marsh McLennan

Marsh McLennan

1166 Avenue of the Americas, New York, NY, US, 10036

Last Update: 05/04/2026

View Profile
Between 800 and 849
http://www.corporate.marsh.com
808/1000Good

Marsh (NYSE: MRSH) is a global leader in risk, strategy and people, advising clients in 130 countries across four businesses: Marsh Risk, Guy Carpenter, Mercer and Oliver Wyman. With annual revenue over $24 billion and more than 90,000 ...

NAICS:52
NAICS Definition:Finance and Insurance
Employees:45,730
Subsidiaries:0
12-month incidents
0
Known data breaches
1
Attack type number
2
Mizuho

Mizuho

1–5–5 Otemachi, Chiyoda–ku, Tokyo, 100–8176, JP

Last Update: 01/04/2026

View Profile
Between 800 and 849
https://www.mizuhogroup.com/
824/1000Good

This is not your typical financial institution. It’s our people who make us a cut above. Here, every person is respected because of their differences, not in spite of them. We pride ourselves on a culture of purpose, passion and compassion. At Mizuho, we provide the st...

NAICS:52
NAICS Definition:Finance and Insurance
Employees:14,564
Subsidiaries:1
12-month incidents
0
Known data breaches
0
Attack type number
0

Compliance Ranges Comparison

Based On Specific Ai Models Category
Marsh McLennan

Marsh McLennan

-
ISO 27001Not verified
ISO 27001
-
SOC2 Type 1Not verified
SOC2 Type 1
-
SOC2 Type 2Not verified
SOC2 Type 2
-
GDPRNot verified
GDPR
-
PCI DSSNot verified
PCI DSS
-
HIPAANot verified
HIPAA
Mizuho

Mizuho

-
ISO 27001Not verified
ISO 27001
-
SOC2 Type 1Not verified
SOC2 Type 1
-
SOC2 Type 2Not verified
SOC2 Type 2
-
GDPRNot verified
GDPR
-
PCI DSSNot verified
PCI DSS
-
HIPAANot verified
HIPAA

Benchmark & Cyber Underwriting Signals

Incidents vs Financial Services Industry Avg (This Year)

No incidents recorded for Marsh McLennan in 2026.

Incidents

Incidents vs Financial Services Industry Avg (This Year)

No incidents recorded for Mizuho in 2026.

Incidents

Incident History - Marsh McLennan (X = Date, Y = Severity)

Marsh McLennan cyber incidents detection timeline including parent company and subsidiaries.

R - Ransomware
C - Cyber Attack
D - Data Breach
V - Vulnerability

Incident History - Mizuho (X = Date, Y = Severity)

Mizuho cyber incidents detection timeline including parent company and subsidiaries.

No timeline data available
R - Ransomware
C - Cyber Attack
D - Data Breach
V - Vulnerability

Notable Incidents

Last Cyber / HR Incidents / Global...
Marsh McLennan

Marsh McLennan

Incidents
🔒 Incident : Data Leak
MAR18242223
🔒 Incident : Breach
MAR307072525
Mizuho

Mizuho

Incidents
No explicit notable incidents reported.

FAQ

Between Marsh McLennan company and Mizuho company, which one has the best AI Cybersecurity Score ?
Between Marsh McLennan company and Mizuho company, which one has experienced more cyber incidents in the past ?
Between Marsh McLennan company and Mizuho company, which one has experienced more cyber incidents this year ?
Between Marsh McLennan company and Mizuho company, which one has experienced at least one ransomware attack ?
Between Marsh McLennan company and Mizuho company, which one has experienced at least one data breach ?
Between Marsh McLennan company and Mizuho company, which one has experienced at least one targeted cyberattack ?
Between Marsh McLennan company and Mizuho company, which one has experienced at least one vulnerability ?
Between Marsh McLennan company and Mizuho company, which one holds the most compliance certifications ?
Between Marsh McLennan company and Mizuho company, which one holds the fewest compliance certifications ?
Between Marsh McLennan company and Mizuho company, which one has the most subsidiaries ?
Between Marsh McLennan company and Mizuho company, which one has the largest number of employees ?
Between Marsh McLennan and Mizuho, which company holds both SOC 2 Type 1 certifications ?
Between Marsh McLennan and Mizuho, which company holds both SOC 2 Type 2 certifications ?
Which company is ISO 27001 certified - Marsh McLennan or Mizuho ?
Which company is PCI DSS compliant - Marsh McLennan or Mizuho ?
Between Marsh McLennan and Mizuho, which company complies with HIPAA regulations for healthcare data ?
Between Marsh McLennan and Mizuho, which company complies with GDPR requirements ?

Latest Global CVEs

CVE-2026-57100
SUMMARY

Server-side request forgery (ssrf) in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate privileges over a network.

PUBLISHED
Date2026-07-02
UPDATED
Date2026-07-02
RISK INFORMATION (Score: 9.9)
CVSS3
Base Score: 9.9
Complexity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
IMPACT SCORE
6
EXPLOITABILITY
3.1
REFERENCES
CVE-2026-54998
SUMMARY

Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.

PUBLISHED
Date2026-07-02
UPDATED
Date2026-07-02
RISK INFORMATION (Score: 8.8)
CVSS3
Base Score: 8.8
Complexity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
IMPACT SCORE
5.9
EXPLOITABILITY
2.8
REFERENCES
CVE-2026-45499
SUMMARY

Server-side request forgery (ssrf) in Azure OpenAI allows an authorized attacker to elevate privileges over a network.

PUBLISHED
Date2026-07-02
UPDATED
Date2026-07-02
RISK INFORMATION (Score: 9.9)
CVSS3
Base Score: 9.9
Complexity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
IMPACT SCORE
6
EXPLOITABILITY
3.1
REFERENCES
CVE-2026-41106
SUMMARY

Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.

PUBLISHED
Date2026-07-02
UPDATED
Date2026-07-02
RISK INFORMATION (Score: 9.3)
CVSS3
Base Score: 9.3
Complexity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
IMPACT SCORE
5.8
EXPLOITABILITY
2.8
REFERENCES
CVE-2026-26145
SUMMARY

Improper access control in Azure Synapse allows an authorized attacker to elevate privileges over a network.

PUBLISHED
Date2026-07-02
UPDATED
Date2026-07-02
RISK INFORMATION (Score: 4.8)
CVSS3
Base Score: 4.8
Complexity: HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
IMPACT SCORE
3.6
EXPLOITABILITY
1.2
REFERENCES