What is the official website of Holtzbrinck Buchverlage GmbH ?

The official website of Holtzbrinck Buchverlage GmbH is http://holtzbrinckverlage.de/wordpress/.

What is Holtzbrinck Buchverlage GmbH's cybersecurity risk score?

Holtzbrinck Buchverlage GmbH has an AI-generated cybersecurity risk score of 751 out of 1000, indicating a Fair security posture according to Rankiteo's assessment.

How many security incidents has Holtzbrinck Buchverlage GmbH experienced?

According to Rankiteo, Holtzbrinck Buchverlage GmbH currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.

Has Holtzbrinck Buchverlage GmbH been affected by any supply chain cyber incidents ?

According to Rankiteo, Holtzbrinck Buchverlage GmbH has not been affected by any supply chain cyber incidents, and no incident IDs are currently listed for the organization.

Does Holtzbrinck Buchverlage GmbH have SOC 2 Type 1 certification ?

According to Rankiteo, Holtzbrinck Buchverlage GmbH is not certified under SOC 2 Type 1.

Does Holtzbrinck Buchverlage GmbH have SOC 2 Type 2 certification ?

According to Rankiteo, Holtzbrinck Buchverlage GmbH does not hold a SOC 2 Type 2 certification.

Does Holtzbrinck Buchverlage GmbH comply with GDPR ?

According to Rankiteo, Holtzbrinck Buchverlage GmbH is not listed as GDPR compliant.

Does Holtzbrinck Buchverlage GmbH have PCI DSS certification ?

According to Rankiteo, Holtzbrinck Buchverlage GmbH does not currently maintain PCI DSS compliance.

Does Holtzbrinck Buchverlage GmbH comply with HIPAA ?

According to Rankiteo, Holtzbrinck Buchverlage GmbH is not compliant with HIPAA regulations.

Does Holtzbrinck Buchverlage GmbH have ISO 27001 certification ?

According to Rankiteo,Holtzbrinck Buchverlage GmbH is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.

Which industry does Holtzbrinck Buchverlage GmbH operate in ?

Holtzbrinck Buchverlage GmbH operates primarily in the Book and Periodical Publishing industry.

How many employees does Holtzbrinck Buchverlage GmbH have ?

Holtzbrinck Buchverlage GmbH employs approximately 18 people worldwide.

Does Holtzbrinck Buchverlage GmbH own any subsidiaries ?

Holtzbrinck Buchverlage GmbH presently has no subsidiaries across any sectors.

How many LinkedIn followers does Holtzbrinck Buchverlage GmbH have ?

Holtzbrinck Buchverlage GmbH's official LinkedIn profile has approximately 361 followers.

What is the NAICS classification code for Holtzbrinck Buchverlage GmbH ?

Holtzbrinck Buchverlage GmbH is classified under the NAICS code 511, which corresponds to Publishing Industries (except Internet).

Does Holtzbrinck Buchverlage GmbH have a Crunchbase profile ?

No, Holtzbrinck Buchverlage GmbH does not have a profile on Crunchbase.

Does Holtzbrinck Buchverlage GmbH have a LinkedIn profile ?

Yes, Holtzbrinck Buchverlage GmbH maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/holtzbrinck-buchverlage-gmbh.

How many cybersecurity incidents has Holtzbrinck Buchverlage GmbH experienced ?

As of June 19, 2026, Rankiteo reports that Holtzbrinck Buchverlage GmbH has experienced 3 cybersecurity incidents.

How many peer or competitor companies does Holtzbrinck Buchverlage GmbH have ?

Holtzbrinck Buchverlage GmbH has an estimated 5,124 peer or competitor companies worldwide.

What types of cybersecurity incidents has Holtzbrinck Buchverlage GmbH faced ?

Incident Types: The types of cybersecurity incidents that have occurred include Ransomware, Breach and Cyber Attack.

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HBG

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751

/1000

Fair

776

/1000

Fair

Holtzbrinck Buchverlage GmbH Vendor Cyber Rating & Cyber Score

holtzbrinckverlage.de

Add Your Compliance Badge

Die Gesellschaft Holtzbrinck Buchverlage vereint die deutschen Verlage S. Fischer, Rowohlt, Droemer Knaur, Kiepenheuer & Witsch, Galiani Berlin und Argon unter einem Dach. Wir koordinieren übergreifende Themen und Projekten im Bereich Marketing und Digitalstrategie sowie Vertrieb und Finanzen und arbeiten gemeinsam an der strategischen Entwicklung unserer Verlage. Das Team der Holtzbrinck Buchverlage GmbH veröffentlicht selbst keine Bücher oder Hörbücher, sondern arbeitet gemeinsam mit Kolleg*innen aus den Verlagen an übergreifenden Themen und Projekten im Bereich Marketing und Digitalstrategie. Zentral sind dabei Erkenntnisgewinn und Wissensaustausch, um Synergien innerhalb der Verlagsgruppe auszuschöpfen und Themen gruppenübergreifend

HBG A.I CyberSecurity Scoring

Scoring History

HBG

Holtzbrinck Buchverlage GmbH CyberSecurity News & History

Past Incidents

Attack Types

Entity

Type

Severity

Impact

Seen

Blog Details

Supply Chain Source

Incident Details

View

Holtzbrinck Buchver...

Cyber Attack

06/2023

HOL3610723

Holtzbrinck Buchver...

Breach

12/2022

MAC224781222

Holtzbrinck Buchver...

Ransomware

100

06/2022

MAC1626722

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A.I.

HBG Company Scoring based on AI Models

Cyber Incidents Likelihood 3 - 6 - 9 months

Actual

Prediction

Incident Predictions locked

Access Monitoring Plan

A.I Risk Score Likelihood 3 - 6 - 9 months

Actual

Prediction A

Prediction B

Prediction C

Prediction D

A.I. Risk Score Predictions locked

Access Monitoring Plan

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Underwriter Stats for HBG

Incidents vs Book and Periodical Publishing Industry Avg (This Year)

No incidents recorded for Holtzbrinck Buchverlage GmbH in 2026.

Incidents vs All-Companies Average (This Year)

No incidents recorded for Holtzbrinck Buchverlage GmbH in 2026.

Incident Types HBG vs Book and Periodical Publishing Industry Avg (This Year)

No incidents recorded for Holtzbrinck Buchverlage GmbH in 2026.

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

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SUBSIDIARY

Holtzbrinck Buchverlage GmbH Subsidiaries

HBG

Book and Periodical Publishing

Website: http://holtzbrinckverlage.de/wordpress/

Company Size: 11-50 employees

Holtzbrinck Publishing GroupBook and Periodical Publishing

ZEIT ONLINEOnline Audio and Video Media

ZEIT VerlagsgruppeBook and Periodical Publishing

Studio ZX | ZEIT VerlagsgruppeAdvertising Services

ZEIT für X | Sponsored Content von Studio ZXMedienproduktion

Deutsche StandardsMedienproduktion

Pan MacmillanBook and Periodical Publishing

Digital ScienceSoftware Development

OverleafSoftware Development

AltmetricInformation Technology & Services

Altmetric for Research and DevelopmentSoftware Development

SciShieldResearch Services

DimensionsIT Services and IT Consulting

SymplecticSoftware Development

Digital Science GmbHIT Services and IT Consulting

The Download: Academic InstitutionsResearch Services

FigshareBook and Periodical Publishing

ReadCubeTechnology, Information and Internet

S. Fischer VerlagBook and Periodical Publishing

Verlag Kiepenheuer & Witsch GmbH & Co. KGBook and Periodical Publishing

MacmillanBook and Periodical Publishing

Holtzbrinck DigitalVenture Capital and Private Equity Principals

Macmillan LearningEducation Administration Programs

Verlagsgruppe Droemer Knaur GmbH & Co. KGBook and Periodical Publishing

HGV Hanseatische Gesellschaft für Verlagsservice mbHBook and Periodical Publishing

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Holtzbrinck Buchverlage GmbH Similar Companies

Forbes

forbes.com

Forbes Media is a global media, branding and technology company, with a focus on news and information about business, investing, technology, entrepreneurship, leadership and affluent lifestyles. The company publishes Forbes, Forbes Asia, and Forbes Europe magazines as well as Forbes.com. The Forbes brand today reaches more than 94 million people worldwide with its business message each month through its magazines and 37 licensed local editions around the globe, Forbes.com, TV, conferences, research, social and mobile platforms. Forbes Media’s brand extensions include conferences, real estate, education, financial services, and technology license agreements. Forbes is an equal opportunity employer.

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NEWS

Holtzbrinck Buchverlage GmbH CyberSecurity News

Latest updates, reports, and threat intel affecting the global network.

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CVE

Latest

Global CVEs (Not Company-Specific)

CVE-2026-56078

SUMMARY

PraisonAI before 1.5.115 contains a path traversal vulnerability in MultiAgentMonitor that fails to sanitize agent IDs when building file paths. Attackers can include traversal sequences like ../ in agent IDs to read, write, or overwrite arbitrary files, enabling sensitive disclosure, denial of service, or code execution.

Published

Date2026-06-18

Updated

Date2026-06-18

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

cvss4

Base Score: 8.7

Complexity: LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

5.9

Exploitability

2.8

REFERENCES

CVE-2026-56077

SUMMARY

PraisonAI before 1.5.115 contains an information disclosure vulnerability in the MultiAgentLedger component that allows attackers to access sensitive data by registering agents with duplicate IDs. Attackers can exploit the lack of agent ID uniqueness enforcement to share ledger instances and expose system prompts and conversation history between agents.

Published

Date2026-06-18

Updated

Date2026-06-18

RISK INFORMATION (Score: 6.5)

cvss3

Base Score: 6.5

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

cvss4

Base Score: 7.1

Complexity: LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

3.6

Exploitability

2.8

REFERENCES

CVE-2026-56076

SUMMARY

PraisonAI before 1.5.128 contains a cross-origin agent execution vulnerability in the AGUI endpoint that allows remote attackers to trigger arbitrary agent execution. The POST /agui endpoint lacks authentication and hardcodes Access-Control-Allow-Origin: * headers, combined with Starlette's Content-Type-agnostic JSON parsing, enabling attackers to bypass CORS preflight checks via simple requests and exfiltrate sensitive agent responses including tool execution results and environment data.

Published

Date2026-06-18

Updated

Date2026-06-18

RISK INFORMATION (Score: 8.1)

cvss3

Base Score: 8.1

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

cvss4

Base Score: 8.6

Complexity: LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

5.2

Exploitability

2.8

REFERENCES

CVE-2026-56075

SUMMARY

PraisonAI before 4.5.128 contains an arbitrary shell command execution vulnerability where the UI modules hardcode approval_mode to auto, overriding administrator configuration from PRAISON_APPROVAL_MODE environment variable. Authenticated attackers can instruct the LLM agent to execute arbitrary shell commands via subprocess.run with shell=True, bypassing the manual approval gate and insufficient command sanitization blocklists.

Published

Date2026-06-18

Updated

Date2026-06-18

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

cvss4

Base Score: 8.7

Complexity: LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

5.9

Exploitability

2.8

REFERENCES

CVE-2026-56074

SUMMARY

PraisonAI before 1.5.128 caches tool approval decisions by tool name only, not by invocation arguments, allowing subsequent execute_command calls to bypass approval prompts. Attackers can exploit this by obtaining initial approval for a benign command, then silently exfiltrate API keys and credentials via subsequent shell commands without user consent.

Published

Date2026-06-18

Updated

Date2026-06-18

RISK INFORMATION (Score: 5.5)

cvss3

Base Score: 5.5

Complexity: LOW

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

cvss4

Base Score: 6.8

Complexity: LOW

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

3.6

Exploitability

1.8

REFERENCES

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