What is the official website of RSK Group ?

The official website of RSK Group is https://rskgroup.com/.

What is RSK Group's cybersecurity risk score?

RSK Group has an AI-generated cybersecurity risk score of 771 out of 1000, indicating a Fair security posture according to Rankiteo's assessment.

How many security incidents has RSK Group experienced?

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

Has RSK Group been affected by any supply chain cyber incidents ?

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

Does RSK Group have SOC 2 Type 1 certification ?

According to Rankiteo, RSK Group is not certified under SOC 2 Type 1.

Does RSK Group have SOC 2 Type 2 certification ?

According to Rankiteo, RSK Group does not hold a SOC 2 Type 2 certification.

Does RSK Group comply with GDPR ?

According to Rankiteo, RSK Group is not listed as GDPR compliant.

Does RSK Group have PCI DSS certification ?

According to Rankiteo, RSK Group does not currently maintain PCI DSS compliance.

Does RSK Group comply with HIPAA ?

According to Rankiteo, RSK Group is not compliant with HIPAA regulations.

Does RSK Group have ISO 27001 certification ?

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

Which industry does RSK Group operate in ?

RSK Group operates primarily in the Environmental Services industry.

How many employees does RSK Group have ?

RSK Group employs approximately 11,990 people worldwide.

Does RSK Group own any subsidiaries ?

RSK Group presently has no subsidiaries across any sectors.

How many LinkedIn followers does RSK Group have ?

RSK Group's official LinkedIn profile has approximately 81,271 followers.

What is the NAICS classification code for RSK Group ?

RSK Group is classified under the NAICS code 54162, which corresponds to Environmental Consulting Services.

Does RSK Group have a Crunchbase profile ?

No, RSK Group does not have a profile on Crunchbase.

Does RSK Group have a LinkedIn profile ?

Yes, RSK Group maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/rsk-group.

How many cybersecurity incidents has RSK Group experienced ?

As of July 17, 2026, Rankiteo reports that RSK Group has experienced 1 cybersecurity incidents.

How many peer or competitor companies does RSK Group have ?

RSK Group has an estimated 8,511 peer or competitor companies worldwide.

What types of cybersecurity incidents has RSK Group faced ?

Incident Types: The types of cybersecurity incidents that have occurred include Cyber Attack.

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RSK Group

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771

/1000

Fair

796

/1000

Fair

RSK Group Vendor Cyber Rating & Cyber Score

rskgroup.com

Add Your Compliance Badge

RSK Group is a global leader in the delivery of environmental and engineering solutions. We recognise the urgent need for sustainable change and know that this will be achieved by delivering meaningful action, not just words. We are committed to supporting our clients and societies as they navigate these complex challenges, while making a positive impact. The business was founded in 1989, originally focused on providing environmental consultancy services to global energy clients. Today, while we remain a leader in environmental consultancy, the business is significantly more diverse. RSK delivers an unrivalled breadth and depth of environmental and engineering services, either as stand-alone projects or as large and integrated

RSK Group A.I CyberSecurity Scoring

Scoring History

RSK Group

RSK Group CyberSecurity News & History

Past Incidents

Attack Types

Entity

Type

Severity

Impact

Seen

Blog Details

Supply Chain Source

Incident Details

View

RSK Group

Cyber Attack

10/2025

JEN273212710242...

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A.I.

RSK Group 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 RSK Group

Incidents vs Environmental Services Industry Avg (This Year)

No incidents recorded for RSK Group in 2026.

Incidents vs All-Companies Average (This Year)

No incidents recorded for RSK Group in 2026.

Incident Types RSK Group vs Environmental Services Industry Avg (This Year)

No incidents recorded for RSK Group in 2026.

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

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SUBSIDIARY

RSK Group Subsidiaries

RSK Group

Environmental Services

Website: https://rskgroup.com/

Company Size: 10,000+ employees

124

BinniesCivil Engineering

Binnies DCWWCivil Engineering

ADASEnvironmental Services

RSK Habitat ManagementEnvironmental Services

ADAS ArboricultureEnvironmental Services

FarmPEPFarming

MWH TreatmentConstruction

CANCivil Engineering

RSK Middle EastEnvironmental Services

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NEWS

RSK Group CyberSecurity News

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

February 10, 2026 07:10 AM

RSK Cyber Security: Fortifying the Digital Frontier by Providing Security Solutions Across Industries

A prominent player in technical services, financial, logistics and construction domain, and delivering tailormade solutions that go...

Read Article

January 28, 2026 08:00 AM

Promotion: How Proeon Systems is powering precision across East Anglia

Proeon Systems a Norwich-based engineering firm, is helping local businesses modernise, operate safely and grow with confidence.

Read Article

December 19, 2024 08:00 AM

The Role of AI and ML

Digital transformation is sweeping the globe and RSK is using AI and ML to rethink company procedures and provide outstanding value.

Read Article

December 09, 2024 08:00 AM

Australian sustainability consultancy Edge Impact joins RSK

Sustainability consultancy Edge Impact has joined global player RSK, providing impetus for the firm's ambitious growth agenda while...

Read Article

September 26, 2023 07:00 AM

RSK Australia expansion continues at pace with water and engineering specialists ADENCO

ADENCO Water Management & Civil Engineering, a company that has served Australia's resource and commodity industries since its inception in 2015, has joined...

Read Article

December 21, 2020 08:00 AM

RSK to acquire UK and Asia water businesses from Black & Veatch

The RSK Group, a UK-headquartered international environmental, engineering and technical services business, is in late stages of agreeing...

Read Article

December 07, 2016 08:00 AM

Business Growth Fund injects £10m into RSK Group

Business Growth Fund has provided £10 million in funding to RSK Group, an environmental, health, safety and engineering services company.

Read Article

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CVE

Latest

Global CVEs (Not Company-Specific)

CVE-2026-44453

SUMMARY

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 6b5370d, h2o is vulnerable to a Denial of Service attack when calling alloca under certain conditions. When serving static files, h2o builds the file path on stack, by calling alloca. The maximum size of the memory allocated using alloca can be as huge as ~600KB, which exceeds the default pthread stack size used by musl libc (128KB). If the amount of memory allocated by alloca exceeds the stack size, the h2o server crashes with a segmentation fault, while it tries to touch the guard page. This issue has been fixed by commit 6b5370d.

Published

Date2026-07-16

Updated

Date2026-07-16

RISK INFORMATION (Score: 7.5)

cvss3

Base Score: 7.5

Complexity: LOW

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

Impact Score

3.6

Exploitability

3.9

REFERENCES

CVE-2026-44452

SUMMARY

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 8dc37cb, when h2o receives a ClientHello message over TLS or QUIC and it contains a zero-length SNI extension, the h2o server runs over the zero-length hostname while trying to copy the hostname, assuming that it is NULL-terminated. This is a potential denial-of-service attack vector in sense that it might trigger segmentation violation. This issue has been fixed by commit 8dc37cb.

Published

Date2026-07-16

Updated

Date2026-07-16

RISK INFORMATION (Score: 5.9)

cvss3

Base Score: 5.9

Complexity: HIGH

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

Impact Score

3.6

Exploitability

2.2

REFERENCES

CVE-2026-44436

SUMMARY

Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server. Prior to commit 8b178e6, Quicly is vulnerable to a Denial of Service attack through connection state corruption. In QUIC Invariants, the maximum length of a Connection ID is 255 bytes, while QUIC version 1 further restricts the maximum to 20 bytes. Quicly implements QUIC version 1 and therefore its CID buffers are limited to 20 bytes. However, to be able to respond to unknown versions of QUIC, its packet decoder accepts Connection IDs of up to 255 bytes. As its CID buffers are merely 20 bytes long, Quicly must reject QUIC version 1 packets with Connection IDs longer than that. The command line tool bundled with Quicly has had that check, however the library itself lacked such enforcement. As a consequence, when used by applications that lack their own enforcement, the connection state becoming inconsistent to buffer overrun. Fortunately, the overflow stops within the allocated chunk of memory, but nevertheless, the bug leads to assertion failures. This issue has been fixed by commit 8b178e6.

Published

Date2026-07-16

Updated

Date2026-07-16

RISK INFORMATION (Score: 7.5)

cvss3

Base Score: 7.5

Complexity: LOW

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

Impact Score

3.6

Exploitability

3.9

REFERENCES

CVE-2026-44435

SUMMARY

Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server. Prior to commit 937d0e9, an assertion failure is raised when the total number of valid handshake messages received over a CRYPTO stream of a single packet number space exceeds 32KB, causing a Denial of Service. This issue has been fixed by commit 937d0e9.

Published

Date2026-07-16

Updated

Date2026-07-16

RISK INFORMATION (Score: 7.5)

cvss3

Base Score: 7.5

Complexity: LOW

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

Impact Score

3.6

Exploitability

3.9

REFERENCES

CVE-2026-44434

SUMMARY

Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server. Prior to commit dccf5d4, Quicly was vulnerable to stateless reset injection through lack of packet entry validation. The QUIC protocol is designed to withstand packet injection attacks, once the handshake is complete. Only packets that carry some secret patterns are considered as stateless resets. Quicly allows the peer to share up to 4 such patterns per connection. However, until now, it failed to determine which of the 4 slots that it uses to retain the secret patterns contains a valid entry. As the slots are zero-initialized, the failure meant that, unless the peer advertised 4 of such patterns, an all-zero pattern was treated as a stateless reset.In effect, this allowed an on-path attacker to reset QUIC connections governed by Quicly. This issue has been fixed by commit dccf5d4.

Published

Date2026-07-16

Updated

Date2026-07-16

RISK INFORMATION (Score: 5.3)

cvss3

Base Score: 5.3

Complexity: LOW

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

Impact Score

1.4

Exploitability

3.9

REFERENCES

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