CISO Tribune

Vendor comparison · 2 companies

Kai vs Red Sift

Kai is an AI company that sells the Kai Autonomous Defense Platform, an agentic AI platform for cyber asset management, application security, infrastructure vulnerability management, and detection engineering. 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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  • Kai
  • Red Sift
Kai vs Red Sift: Products, Customers and Funding Compared
KaiKai is an AI company that sells the Kai Autonomous Defense Platform, an agentic AI platform for cyber asset management, application security, infrastructure vulnerability management, and detection engineering.kai.securityRed 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
  • Kai Autonomous Defense Platform[4][13]An agentic AI platform that executes the exposure lifecycle end to end without human handoffs.
  • Continuous Threat Exposure Management (CTEM)[7]Runs all five CTEM phases and adds auto-remediation and detection as phases six and seven.
  • Kai Watch[7]Monitors telemetry to identify active exploitation while fixes are in progress.
  • AI-native SAST[15]A SAST capability in preview for select customers.
  • Red Sift OnDMARC[2][9]Email authentication product for DMARC enforcement.
Categories
Headquarters
San Jose, United StatesLondon, United Kingdom[5][6]
Founded
Not stated on its pages2015[3]
Ownership and funding
Privately held[5]Privately held[2][4][15]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • July 29, 2026Kai announced findings from its 2026 State of Autonomous Defense Report and made its Auto Remediation capability available.[16]
  • March 10, 2026Kai emerged from stealth with $125 million in funding, led by Evolution Equity Partners with participation from N47 and strategic investors.[11]
  • 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
From its own pages, the company sells mainly to enterprises. A blog post on its site says it has delivered autonomous security work for enterprises across multiple verticals. Its detection phase names SIEM, EDR, and XDR as the places where it deploys rules. It also says humans control the boundary between autonomous action and human review.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. 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
September 27, 2026September 27, 2026

Where they overlap

  • Kai and Red Sift are both filed under External attack surface management.
  • Both are privately held.

Where they differ, field by field

  • Kai's primary category is AI SOC analysts; Red Sift's is Email authentication and DMARC.
  • Kai is also filed under Threat intelligence. Red Sift is also filed under Digital risk protection and Machine identity and PKI.
  • Kai lists Kai Autonomous Defense Platform, Continuous Threat Exposure Management (CTEM), Kai Watch and AI-native SAST. Red Sift lists Red Sift OnDMARC.
  • Kai is headquartered in San Jose, United States. Red Sift is headquartered in London, United Kingdom.
  • Red Sift was founded in 2015.

What it sells: Kai

What Kai Autonomous Defense Platform does[4][13]
The Kai Autonomous Defense Platform executes the exposure lifecycle end to end without human handoffs. Kai aggregates findings from existing security and IT systems, determines reachability and exploitability, discards what cannot be exploited, attaches evidence to what survives, and then remediates. Kai agents interrogate CMDB, endpoint, cloud, identity, scanning, and code systems, then rebuild each asset record from the evidence they find.
What Continuous Threat Exposure Management (CTEM) does[7]
Kai runs all five phases, then adds two more: it executes the assigned fix immediately, and it watches exposed assets with targeted detection rules until remediated. Auto-remediation sits at phase six, where Kai takes immediate action once a fix is assigned.
What Kai Watch does[7]
Kai Watch continuously monitors telemetry to identify active exploitation. Kai Watch deploys validated detection rules to contain risk across the environment while fixes are in progress. Kai Watch is part of the detection phase, which Kai places at phase seven once remediation is underway.
What AI-native SAST does[15]
Kai is releasing an AI-native SAST capability in preview for select customers. Kai applies AI-native reachability analysis from the start, combining static analysis with runtime behavior to determine whether a finding is actually exploitable before it reaches a human. Kai validated each finding by automatically generating exploits and running them in an out-of-band non-production environment.

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 Kai and Red Sift

What do Kai and Red Sift sell?
Kai sells Kai Autonomous Defense Platform, Continuous Threat Exposure Management (CTEM), Kai Watch and AI-native SAST. Red Sift sells Red Sift OnDMARC.
Are Kai and Red Sift in the same category?
They share External attack surface management. Kai's primary category is AI SOC analysts and Red Sift's is Email authentication and DMARC.
Where are Kai and Red Sift headquartered?
Kai is headquartered in San Jose, United States. Red Sift is headquartered in London, United Kingdom.
When were Kai and Red Sift founded?
Red Sift was founded in 2015.
Who owns Kai and Red Sift?
Kai is privately held. Red Sift is privately held.
Who are Kai and Red Sift sold to?
From its own pages, the company sells mainly to enterprises. 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 Kai and Red Sift announced recently?
July 29, 2026: Kai announced findings from its 2026 State of Autonomous Defense Report and made its Auto Remediation capability available. 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 Kai

Kai is an AI company that sells the Kai Autonomous Defense Platform, an agentic AI platform for cyber asset management, application security, infrastructure vulnerability management, and detection engineering. Kai says its platform is an agentic AI platform built from first principles to do security work end-to-end: gathering exhaustive context, continuously assessing risk, prioritizing action, and reducing risk. Kai describes a single agentic AI platform that does the actual security work autonomously and continuously across threat intelligence, exposure management, detection, response and beyond. Kai says its platform continuously analyzes threat intelligence, vulnerabilities, asset context, and other sources, correlates risk across the environment in real time, and can execute remediation actions.[1][6][13][14]

Kai says AI-enabled attacks arrive faster and in volumes no queue can absorb. Kai says each step of the response belongs to a different tool and team, so the exposure waits at every handoff. Kai describes a gap in which an exposure is confirmed as real and then sits exposed while a team works out how to fix it. Kai describes approved fixes that wait in a ticket queue instead of shipping. Kai says it runs every step on one platform at machine speed. Kai describes its auto-remediation as validating before acting and showing its work at every step.[4][7]

The Kai Autonomous Defense Platform executes the exposure lifecycle end to end without human handoffs. Kai aggregates findings from existing security and IT systems, determines reachability and exploitability, discards what cannot be exploited, attaches evidence to what survives, and then remediates. Kai remediates by writing the change, routing it to the accountable owner, or deploying a compensating detection when a patch is blocked. Kai agents interrogate CMDB, endpoint, cloud, identity, scanning, and code systems, then rebuild each asset record from the evidence they find. Kai writes the change itself and, where a maintenance window blocks the patch, specifies the configuration change to the controls the customer already runs. Kai says some fixes wait on a maintenance window, a vendor patch, or a release, and the exposure stays open the whole time. Kai says it builds detection for the customer environment.[4][9]

Kai says Continuous Threat Exposure Management (CTEM) promised a repeatable path from exposure to fix: scope, discover, prioritize, validate, mobilize. Kai runs all five phases, then adds two more: it executes the assigned fix immediately, and it watches exposed assets with targeted detection rules until remediated. Auto-remediation sits at phase six, where Kai takes immediate action once a fix is assigned instead of letting it wait in a queue. Kai executes an assigned fix directly for the majority of confirmed findings. For the complex few findings that need human review, Kai builds the complete remediation plan, identifies the right owner, and stages it for approval. Kai Watch continuously monitors telemetry to identify active exploitation and deploys validated detection rules to contain risk across the environment while fixes are in progress.[4][7]

Kai determines which vulnerabilities are truly reachable and exploitable, then uses AI-native prioritization to rank them by actual risk. While remediation is underway, Kai creates and deploys detection rules to identify exploitation attempts in real time. Kai is releasing an AI-native SAST capability in preview for select customers. In its SAST capability, Kai applies AI-native reachability analysis from the start, combining static analysis with runtime behavior to determine whether a finding is actually exploitable before it reaches a human. Kai validated each finding by automatically generating exploits and running them in an out-of-band non-production environment.[10][15]

Kai was founded by the creators of the category-defining companies Claroty and SecurityMatters. Galina Antova and Dr. Damiano Bolzoni previously built Claroty and SecurityMatters. Kai emerged from stealth with $125 million in funding. Kai says dozens of design partners iterated with it until the vision became something real. Kai says it has delivered autonomous security work across multiple use cases for Fortune 500 and Global 1000 enterprises across multiple verticals. Kai announced the appointment of Alfredo Hickman as Chief Information Security Officer. Kai Cyber Inc. lists its address as 90 Skyport Drive, Suite 200, San Jose, CA 95110.[1][2][4][6][7][9][10][13][14]

Kai on the record

Sources

Kai full record

  1. [1]kai.securityKai · kai.security · undated page, accessed September 27, 2026 · Tier A
  2. [2]Kai emerges from stealth with 125m powering machine speed defense to outpace ai enabled adversaries 302708978Kai via PR Newswire · prnewswire.co.uk · published March 10, 2026 · Tier A
  3. [3]kai.securityKai Cyber Inc. · kai.security · undated page, accessed September 27, 2026 · Tier A
  4. [4]Kai Autonomous Defense Platform | End-to-End Agentic Risk ReductionKai · undated page, accessed October 26, 2026 · Tier A
  5. [5]PlatformKai · undated page, accessed October 26, 2026 · Tier A
  6. [6]We Aren’t Building a Better Tool. We’re Rebuilding Security. | Kai AI-Native Autonomous Defense PlatformKai · published March 10, 2026 · Tier A
  7. [7]Continuous Threat Exposure Management | Solutions at KaiKai · undated page, accessed October 26, 2026 · Tier A
  8. [8]Our Story & Manifesto | Kai Agentic AI PlatformKai · undated page, accessed October 26, 2026 · Tier A
  9. [9]Cyber Asset Attack Surface ManagementKai · undated page, accessed October 26, 2026 · Tier A
  10. [10]Mythos | Solutions at KaiKai · undated page, accessed October 26, 2026 · Tier A
  11. [11]Kai Emerges from Stealth with $125M, Powering Machine-Speed Defense to Outpace AI-Enabled AdversariesKai · published March 10, 2026 · Tier A
  12. [12]Kai Appoints Alfredo Hickman as CISO to Usher in the Future of AI-Driven Security | Kai Autonomous Defense PlatformKai · undated page, accessed November 10, 2026 · Tier A
  13. [13]New Research from Kai: UK CISOs Face a Widening AI Security Gap as Attackers Gain the Advantage | Kai Autonomous Defense PlatformKai · published September 21, 2026 · Tier A
  14. [14]Joining Kai as CISO: Rebuilding Security for the AI Era | Kai Autonomous Defense PlatformKai · undated page, accessed November 10, 2026 · Tier A
  15. [15]Kai product update: AI-native SAST and deeper vulnerability validation through membership in Anthropic's Cyber Verification Program | Kai Autonomous Defense PlatformKai · undated page, accessed November 10, 2026 · Tier A
  16. [16]New Research from Kai: CISOs Say AI Is Accelerating Cyber Threats, Driving the Shift to Machine-Led SecurityPR Newswire · published July 29, 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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