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Comparison Overview

Markel GroupMarkel Group
VS
Koç HoldingKoç Holding
Markel Group

Markel Group

4521 Highwoods Pkwy, Glen Allen, 23060, US

Last Update: 07/07/2026

View Profile
Between 650 and 699
https://www.mklgroup.com
685/1000Weak

Markel Group Inc. (NYSE: MKL) is a diverse family of companies that includes everything from insurance to bakery equipment, building supplies, houseplants, and more. The leadership teams of these businesses operate with a high degree of independence, while at the same t...

NAICS:55
NAICS Definition:Management of Companies and Enterprises
Employees:70
Subsidiaries:0
12-month incidents
1
Known data breaches
1
Attack type number
1
Koç Holding

Koç Holding

Nakkaştepe, Azizbey Sokak No: 1, Istanbul, 34674, TR

Last Update: 01/04/2026

View Profile
Between 750 and 799
http://www.koc.com.tr
785/1000Fair

Koç Holding is Turkey’s leading investment holding company and Koç Group is Turkey's largest industrial and services group in terms of revenues, exports, number of employees, taxes paid and market capitalization on Borsa Istanbul. Being the only Turkish company to be ra...

NAICS:55
NAICS Definition:Management of Companies and Enterprises
Employees:77,737
Subsidiaries:53
12-month incidents
0
Known data breaches
0
Attack type number
0

Compliance Ranges Comparison

Based On Specific Ai Models Category
Markel Group

Markel Group

-
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
Koç Holding

Koç Holding

-
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 Holding Companies Industry Avg (This Year)

Markel Group has 50.0% fewer incidents than the average of same-industry companies with at least one recorded incident.

Incidents

Incidents vs Holding Companies Industry Avg (This Year)

No incidents recorded for Koç Holding in 2026.

Incidents

Incident History - Markel Group (X = Date, Y = Severity)

Markel Group cyber incidents detection timeline including parent company and subsidiaries.

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

Incident History - Koç Holding (X = Date, Y = Severity)

Koç Holding 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...
Markel Group

Markel Group

Incidents
🔒 Incident : Breach
MARMAR1783449656
Koç Holding

Koç Holding

Incidents
No explicit notable incidents reported.

FAQ

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

Latest Global CVEs

CVE-2026-5270
SUMMARY

An authentication bypass vulnerability exists in certain releases of Ciena Navigator Network Control Suite (NCS), Manage Control Plan (MCP), and Blue Planet products. The issue is caused by improper handling of HTTP request paths and headers, which allows an unauthenticated attacker to manipulate requests in a manner that bypasses authentication and associated audit logging controls.

PUBLISHED
Date2026-07-14
UPDATED
Date2026-07-14
IMPACT SCORE
NA
EXPLOITABILITY
NA
CVE-2026-5269
SUMMARY

In Ciena's Navigator Network Control Suite (NCS) and Manage Control Plan (MCP), there are hidden system accounts used for internal software operations. Some of these accounts have default passwords that may be predictable. While these accounts have very limited permissions on their own, an attacker could combine an attack using one of these accounts with other potential weaknesses to launch a more significant attack, possibly leading to escalation of privilege on the system.

PUBLISHED
Date2026-07-14
UPDATED
Date2026-07-14
IMPACT SCORE
NA
EXPLOITABILITY
NA
CVE-2026-51808
SUMMARY

Buffer Overflow vulnerability in OpenHTJ2K v.0.18.4 and before allows an attacker to execute arbitrary code via the openhtj2k_decoder_impl::invoke, invoke_line_based, invoke_line_based_stream, and invoke_line_based_predecoded function in source/core/interface/decoder.cpp

PUBLISHED
Date2026-07-14
UPDATED
Date2026-07-14
IMPACT SCORE
NA
EXPLOITABILITY
NA
CVE-2026-51807
SUMMARY

Buffer Overflow vulnerability in OpenHTJ2K v.0.18.4 and before allows an attacker to execute arbitrary code via the j2k_precinct_subband::parse_packet_header() in source/core/coding/coding_units.cpp

PUBLISHED
Date2026-07-14
UPDATED
Date2026-07-14
IMPACT SCORE
NA
EXPLOITABILITY
NA
CVE-2026-36035
SUMMARY

Incorrect access control in the /api/License/deactivateOffline endpoint of CAXPerts UniversalPlantViewer WebServices Server v2.7.6 allows authenticated attackers with low-level privileges to cause a Denial of Service (DoS) via removing the license from the webserver.

PUBLISHED
Date2026-07-14
UPDATED
Date2026-07-14
IMPACT SCORE
NA
EXPLOITABILITY
NA