CISO Tribune

Vendor comparison · 2 companies

NetSPI vs Red Sift

NetSPI sells pentesting as a service (PTaaS), attack surface management (ASM), and breach and attack simulation (BAS) as a service. Red Sift helps security and IT teams embrace the security protocols that keep the internet safe, such as DMARC, SPF, DKIM and TLS. CISO Tribune files both under External attack surface management. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • NetSPI
  • Red Sift
NetSPI vs Red Sift: Products, Customers and Funding Compared
NetSPINetSPI sells pentesting as a service (PTaaS), attack surface management (ASM), and breach and attack simulation (BAS) as a service.netspi.comRed SiftRed Sift helps security and IT teams embrace the security protocols that keep the internet safe, such as DMARC, SPF, DKIM and TLS.redsift.com
What it sells
  • AI/ML Pentesting[3]Pentesting of AI and ML systems that includes LLM testing and jailbreaking.
  • Red Team Operations[6]Red team exercises that test security controls, policies, incident response and training.
  • Detective Controls Testing[7]Attack simulations that validate whether security tools detect threats.
  • Social Engineering[6]Email, text, phone and physical social engineering assessments.
  • Red Sift OnDMARC[2][9]Email authentication product for DMARC enforcement.
Categories
Headquarters
Not stated on its pagesLondon, United Kingdom[5][6]
Founded
Not stated on its pages2015[3]
Ownership and funding
Not stated on its pagesPrivately held[2][4][15]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • October 21, 2026Red Sift notified customers with potentially affected hosts after scanning the Hardenize customer base for PHP-backed hosts, following the PHP security fixes.[18]
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 4, 2026[15]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetFrom its own pages, the company sells mainly to security and IT teams that want to adopt protocols such as DMARC, SPF, DKIM and TLS. Save the Children also appears as a customer story for OnDMARC. The about page says the company works across EMEA, APAC and the US.
Last verified
November 13, 2026September 27, 2026

Where they overlap

  • NetSPI and Red Sift are both filed under External attack surface management.

Where they differ, field by field

  • NetSPI's primary category is Penetration testing and red team services; Red Sift's is Email authentication and DMARC.
  • NetSPI is also filed under Breach simulation and automated pen-testing and Exposure prioritisation and CTEM. Red Sift is also filed under Digital risk protection and Machine identity and PKI.
  • NetSPI lists AI/ML Pentesting, Red Team Operations, Detective Controls Testing and Social Engineering. Red Sift lists Red Sift OnDMARC.
  • Red Sift is headquartered in London, United Kingdom.
  • Red Sift was founded in 2015.
  • Red Sift is privately held.

What it sells: NetSPI

What AI/ML Pentesting does[3]
NetSPI's AI/ML Pentesting includes expert LLM testing and jailbreaking. Microsoft partnered with NetSPI to build a standardized AI security testing framework for its 70+ products.
What Red Team Operations does[6]
NetSPI's Red Team Operations test security controls, policies, incident response and training. NetSPI partners with selected threat intelligence providers to test the resiliency of critical systems.
What Detective Controls Testing does[7]
NetSPI Detective Controls Testing validates that security tools operate effectively across endpoint security solutions, network security solutions, SIEMs and MSSPs. NetSPI's ransomware simulation pack covers TTPs and behaviors from real-world ransomware campaigns.
What Social Engineering does[6]
NetSPI's social engineering experts deliver findings from email, text, phone and physical scenarios. NetSPI runs custom phishing engagements to identify gaps in security procedures and technical controls.

What it sells: Red Sift

What Red Sift OnDMARC does[2][9]
Red Sift OnDMARC gives instant visibility into a domain's email security posture and a clear path to DMARC enforcement. It lets customers configure SPF, DKIM, DMARC, BIMI and MTA-STS in one place. Red Sift says it helps organizations reach full DMARC enforcement in just 6 to 8 weeks.

Questions about NetSPI and Red Sift

What do NetSPI and Red Sift sell?
NetSPI sells AI/ML Pentesting, Red Team Operations, Detective Controls Testing and Social Engineering. Red Sift sells Red Sift OnDMARC.
Are NetSPI and Red Sift in the same category?
They share External attack surface management. NetSPI's primary category is Penetration testing and red team services and Red Sift's is Email authentication and DMARC.
Where are NetSPI and Red Sift headquartered?
Red Sift is headquartered in London, United Kingdom.
When were NetSPI and Red Sift founded?
Red Sift was founded in 2015.
Who owns NetSPI and Red Sift?
Red Sift is privately held.
Who are NetSPI and Red Sift sold to?
From its own pages, the company sells mainly to security and IT teams that want to adopt protocols such as DMARC, SPF, DKIM and TLS.
What have NetSPI and Red Sift announced recently?
October 21, 2026: Red Sift notified customers with potentially affected hosts after scanning the Hardenize customer base for PHP-backed hosts, following the PHP security fixes.

About NetSPI

NetSPI sells pentesting as a service (PTaaS), attack surface management (ASM), and breach and attack simulation (BAS) as a service. NetSPI's inception was in 2001. NetSPI states that it has more than 20 years of history, 350+ experts and 50+ pentesting services. NetSPI combines human penetration testers with purpose-built AI to deliver continuous cybersecurity testing. NetSPI embeds AI throughout its testing methodologies. The NetSPI Platform is designed for modern enterprises managing ongoing pentesting programs and complex attack surfaces. The NetSPI Platform lets users manage integrations, scans and agents in one centralized workflow.[2][3]

NetSPI offers pentesting for web, API, mobile, thick and virtual applications, and AI/ML pentesting. NetSPI's AI/ML pentesting includes expert LLM testing and jailbreaking. Microsoft partnered with NetSPI to build a standardized AI security testing framework for its 70+ products. NetSPI's cloud pentesting covers AWS, Azure and Google Cloud infrastructures. NetSPI tests z/OS mainframes, including the CICS and IMS region and application. NetSPI's network pentesting covers internal, external, wireless, host-based and virtual desktop networks. NetSPI tests hardware systems in automotive, medical device, IoT, ATM and operational technology settings. Testers on the NetSPI Platform are supported by certifications such as OSCP, OSCE, GXPN, GPEN, GWAPT, CISSP, CEH and CREST. NetSPI introduced EchoBench, a human-calibrated benchmark for autonomous AI web app pentesting.[3][5]

NetSPI sells security assessments and strategic advisory services tailored to an organization's needs. NetSPI's Red Team Operations test security controls, policies, incident response and training. NetSPI's social engineering experts deliver findings from email, text, phone and physical scenarios. NetSPI runs custom phishing engagements to identify gaps in security procedures and technical controls.[3][6]

NetSPI Detective Controls Testing validates that security tools operate effectively across endpoint security solutions, network security solutions, SIEMs and MSSPs. NetSPI's ransomware simulation pack simulates TTPs and behaviors from real-world ransomware campaigns, including threat actors such as CL0P, BlackCat and Fin7. NetSPI's Azure simulation pack runs authenticated and anonymous attacks against Azure, including command execution, credential guessing and sensitive data gathering. NetSPI's Linux simulation pack focuses on tactics often used to exploit Linux environments, such as remote code execution, shell configuration modifications and data extraction. NetSPI's macOS simulation pack addresses Apple's macOS with simulations for Command & Script Interpreter execution, LaunchAgent persistence and data exfiltration. NetSPI's ESXi simulation pack simulates adversarial tactics such as brute force and ransomware that are common in ESXi environments. NetSPI's threat modeling service takes a holistic approach to identifying potential threats to a company's systems and applications. NetSPI experts review source code manually to identify vulnerabilities that automated scanners cannot detect. NetSPI's cybersecurity maturity work assesses current cybersecurity program structure and maturity, then reviews current business objectives and compliance requirements.[6][7]

NetSPI automatically scans an organization's external perimeter and internal assets with integrations across identities, applications and devices. The NetSPI Platform automatically scans the external perimeter, including look-alike domains and dark web exposures. NetSPI also gives visibility across owned assets and the internal attack surface, including users, applications, devices and clouds. NetSPI's AWS cloud configuration review detects public exposure of sensitive credentials and proprietary data in AWS environments. The NetSPI Platform tracks changes to an Azure cloud environment and its configurations over time. NetSPI's centralized threat intelligence dashboard consolidates multiple dark web data sources. NetSPI provides continuous discovery and assessment of both registered and unregistered look-alike domains. With domain monitoring on the NetSPI Platform, users can prioritize threats and prepare takedown reports based on domain association, brand abuse and threat confirmation findings. NetSPI offers integrations across asset managers, IAM and vulnerabilities.[3]

NetSPI offers MCP integration for AI and LLMs to its validated vulnerability data. An MCP-compatible AI assistant can be connected to the NetSPI Platform MCP Server.[3][8]

Chubb is a commercial and personal property and casualty insurer with operations in 54 countries. NetSPI and Chubb have a partnership aimed at the security posture and underwriting outcomes of Chubb's clients. Chubb says NetSPI performs on-demand penetration tests for some of its insureds as part of the underwriting process for their renewals. Chubb uses NetSPI's Attack Surface Management platform to identify vulnerabilities and other security issues for its policyholders. NetSPI works with channel and technology partners who deliver proactive security services to customers across the globe.[1][2][5][6][7][8][9]

NetSPI on the record

Sources

NetSPI full record

  1. [1]netspi.comNetSPI · netspi.com · undated page, accessed November 13, 2026 · Tier A
  2. [2]About Us - NetSPINetSPI · undated page, accessed November 13, 2026 · Tier A
  3. [3]NetSPI - Proactive Cyber Security | PTaaS, ASM, BASNetSPI · undated page, accessed November 13, 2026 · Tier A
  4. [4]The NetSPI Platform - NetSPINetSPI · undated page, accessed November 13, 2026 · Tier A
  5. [5]Customer Stories - NetSPINetSPI · undated page, accessed November 13, 2026 · Tier A
  6. [6]Cyber Security Assessments & Strategic Advisory Services - NetSPINetSPI · undated page, accessed November 13, 2026 · Tier A
  7. [7]Detective Controls Testing: Attack Simulation & Control ValidationNetSPI · undated page, accessed November 13, 2026 · Tier A
  8. [8]Model Context Protocol - NetSPINetSPI · undated page, accessed November 13, 2026 · Tier A
  9. [9]NetSPI Customer Case Study – ChubbNetSPI · undated page, accessed November 13, 2026 · Tier A

Red Sift full record

  1. [1]redsift.comRed Sift · redsift.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]The Red Sift Pulse PlatformRed Sift · undated page, accessed September 27, 2026 · Tier A
  3. [3]Cloud email security brand protection startup red sift rises 54mSiliconANGLE · siliconangle.com · published February 24, 2022 · Tier B
  4. [4]6977295001Austin American-Statesman · statesman.com · published March 4, 2022 · Tier B
  5. [5]Red sift joins future fifty 2026 cohort unveiled by chancellor at downing streetRed Sift via EIN Presswire · thestarpress.com · published March 19, 2026 · Tier B
  6. [6]Red siftThe Wealth Mosaic · thewealthmosaic.com · undated page, accessed September 27, 2026 · Tier C
  7. [7]Red Sift | Creating a Fundamentally Safer Internet with Proactive SecurityRed Sift · undated page, accessed October 27, 2026 · Tier A
  8. [8]Proactive, intelligent security for every organization.Red Sift · undated page, accessed October 27, 2026 · Tier A
  9. [9]Red Sift OnDMARC | Stop Email Spoofing FastRed Sift · undated page, accessed October 27, 2026 · Tier A
  10. [10]OnDMARC Pricing | Plans for SMB to Enterprise + Free TrialRed Sift · undated page, accessed October 27, 2026 · Tier A
  11. [11]Stop lookalike domains before they damage your brandRed Sift · undated page, accessed October 27, 2026 · Tier A
  12. [12]Bird & Bird strengthens trust in legal communications with layered email and domain protectionRed Sift · undated page, accessed October 27, 2026 · Tier A
  13. [13]Find and fix issues 10x faster with Red Sift RadarRed Sift · undated page, accessed October 27, 2026 · Tier A
  14. [14]Red Sift Certificates Lite | Free Certificate MonitoringRed Sift · undated page, accessed October 27, 2026 · Tier A
  15. [15]Red Sift OnDMARC Reviews 2026: Details, Pricing, & Features | G2G2 · undated page, accessed October 27, 2026 · Tier C
  16. [16]How to Price and Package DMARC Services for Your MSP | Red SiftRed Sift · undated page, accessed November 4, 2026 · Tier A
  17. [17]DMARC solutions for healthcare organizationsRed Sift · undated page, accessed November 4, 2026 · Tier A
  18. [18]Critical PHP vulnerabilities CVE-2026-109618 and CVE-2026-109619 | Red SiftRed Sift · published October 21, 2026 · Tier A

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