CISO Tribune

Vendor comparison · 2 companies

iCOUNTER vs Red Sift

In real time, iCOUNTER detects the active threats targeting a customer's vendors, suppliers, MSPs, SaaS providers, partners, and broader digital ecosystem. 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 Digital risk protection. 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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Up to four companies side by side.

  • iCOUNTER
  • Red Sift
iCOUNTER vs Red Sift: Products, Customers and Funding Compared
iCOUNTERIn real time, iCOUNTER detects the active threats targeting a customer's vendors, suppliers, MSPs, SaaS providers, partners, and broader digital ecosystem.icounter.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
  • CTOS (Counter Threat Operating System)[9]A cybersecurity platform that connects intelligence collection, risk determination, enterprise context, and counter-threat operations in one architecture.
  • Red Sift OnDMARC[2][9]Email authentication product for DMARC enforcement.
Categories
Headquarters
Not stated on its pagesLondon, United Kingdom[5][6]
Founded
2020[2][7]2015[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
From its own pages, iCOUNTER sells CTOS mainly to enterprises and public sector organizations with complex third party ecosystems, naming CISOs, third-party risk managers, security operations teams, and compliance officers as the buyer roles. Our reading is that CTOS is pitched to organizations that already run a third-party program and security tools, which CTOS complements. The ecosystems in scope include critical third parties, technology providers, supply-chain partners, and subsidiaries.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

  • iCOUNTER and Red Sift are both filed under Digital risk protection.

Where they differ, field by field

  • iCOUNTER's primary category is Third-party risk and security ratings; Red Sift's is Email authentication and DMARC.
  • iCOUNTER is also filed under Fraud prevention. Red Sift is also filed under External attack surface management and Machine identity and PKI.
  • iCOUNTER lists CTOS (Counter Threat Operating System). Red Sift lists Red Sift OnDMARC.
  • Red Sift is headquartered in London, United Kingdom.
  • iCOUNTER was founded in 2020. Red Sift was founded in 2015.
  • Red Sift is privately held.

What it sells: iCOUNTER

What CTOS (Counter Threat Operating System) does[9]
CTOS identifies active threats across a customer's extended ecosystem, determines their relevance to the business, and drives remediation with the affected third party. CTOS combines global intelligence collection with a digital twin of the customer's ecosystem to determine which live threats matter to that customer. Customers get access to the CTOS Platform for monitoring risk events, communications, and mitigations.

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 iCOUNTER and Red Sift

What do iCOUNTER and Red Sift sell?
iCOUNTER sells CTOS (Counter Threat Operating System). Red Sift sells Red Sift OnDMARC.
Are iCOUNTER and Red Sift in the same category?
They share Digital risk protection. iCOUNTER's primary category is Third-party risk and security ratings and Red Sift's is Email authentication and DMARC.
Where are iCOUNTER and Red Sift headquartered?
Red Sift is headquartered in London, United Kingdom.
When were iCOUNTER and Red Sift founded?
iCOUNTER was founded in 2020. Red Sift was founded in 2015.
Who owns iCOUNTER and Red Sift?
Red Sift is privately held.
Who are iCOUNTER and Red Sift sold to?
From its own pages, iCOUNTER sells CTOS mainly to enterprises and public sector organizations with complex third party ecosystems, naming CISOs, third-party risk managers, security operations teams, and compliance officers as the buyer roles. 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 iCOUNTER 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 iCOUNTER

In real time, iCOUNTER detects the active threats targeting a customer's vendors, suppliers, MSPs, SaaS providers, partners, and broader digital ecosystem.

An acceptable security posture can coexist with stolen credentials, access for sale, or an active compromise. Enterprise systems now depend on vendors, SaaS providers, and other third parties that third party risk management programs cannot continuously monitor.

CTOS (Counter Threat Operating System) is a cybersecurity platform that connects intelligence collection, risk determination, enterprise context, and counter-threat operations in one architecture. CTOS identifies active threats across a customer's extended ecosystem, determines their relevance to the business, and drives remediation with the affected third party. CTOS identifies adversary targeting, exposed credentials, campaign staging, and active compromise signals. Example threats include network or administrator access for sale, compromised VPN credentials, web shells, and data appearing in ransomware files. Active targeting and compromise signals are identified across critical third parties, technology providers, supply-chain partners, and subsidiaries. The Counter Threat Operating System (CTOS) includes third-party risk management and counter fraud capabilities.[1][5][9][10]

CTOS combines global intelligence collection with a digital twin of the customer's ecosystem to determine which live threats matter to that customer. Intelligence collection across thousands of global sources, including cybercrime forums, credential markets, and ransomware sites, is owned and operated by iCOUNTER. Signals are collected continuously from adversary infrastructure, active compromise activity, exposed credentials, dark web sources, and third-party ecosystem telemetry. HUMINT is augmented with AI parsing of hundreds of databases to identify specific targeted threats. CTOS correlates threat signals against a digital twin of the customer's ecosystem to help determine whether a threat is real, which third parties are affected, the potential business impact, and who needs to act. CTOS determines risk at the Edge of Intelligence Collection, validating threat signals against the customer's ecosystem before findings reach the customer's team. CTOS connects third-party relationships and business dependencies to the organization's risk framework and tiers. AI helps CTOS correlate large volumes of threat signals and determine which are relevant to the customer's ecosystem. CTOS connects validated risk to existing security and risk workflows, and feedback from remediation outcomes informs the intelligence operation.[6]

Using observable connection data, iCOUNTER maps a customer's ecosystem of vendors and data flows. Early warning is given if access to a vendor's network has been gained by cybercriminals. Vendors that have been victims of successful ransomware attacks, or that have exposed data that may include the customer's, are identified.[6]

On the customer's behalf, iCOUNTER runs the intelligence-to-remediation operation: collecting and validating signals, determining ecosystem risk, engaging affected third parties, and coordinating remediation through completion. Under its terms, iCOUNTER provides managed third-party threat detection and response services that perform continuous reconnaissance across the customer's extended third-party ecosystem using human intelligence, technical intelligence, and adversary infrastructure monitoring. The managed services include a Validated Connectivity Inventory, which enumerates third parties based on verified bi-directional data exchange. Prescriptive Remediation provides actionable countermeasures with defensible evidence for third parties to take corrective actions. Analysts at iCOUNTER manage the CTOS Platform to track risk events, communicate with impacted third parties, and track third-party mitigations. Customers get access to the CTOS Platform for monitoring risk events, communications, and mitigations. Quarterly Business Reviews summarize alerts, mitigations, and current risk profile. Remediation is handled by iCOUNTER, which engages the affected third party, coordinates remediation, and tracks the fix to completion with evidence. Built-in metrics and remediation tracking are used to communicate progress to stakeholders and the board. The Managed Services and the CTOS Platform dashboard are provided by iCOUNTER, Inc.[5]

CTOS complements a customer's existing program, including security ratings, questionnaires, GRC, threat intelligence, and SOC tools. Alongside a SecurityScorecard program, iCOUNTER adds its own intelligence collection, business-specific risk determination, and managed third-party response. A direct integration with SecurityScorecard is not required to begin an iCOUNTER engagement. Any data exchange or workflow integration can be scoped separately around the customer's environment and the products the customer uses. To start, a customer supplies a CSV of priority third parties and ecosystem partners. Customers share their risk framework, priorities, and current service coverage so the engagement can focus on relevant business dependencies. CTOS is aimed at CISOs, third-party risk managers, security operations teams, and compliance officers in enterprises and public sector organizations with complex third party ecosystems.[8]

John Watters acquired iDEFENSE in 2002, four years after its founding in 1998, and later founded iSIGHT Partners in 2007. Following the merger of iSIGHT and Mandiant under the Mandiant brand, John Watters served as President and COO until the company's acquisition by Google in 2022.[5][6][8][9][10][11]

iCOUNTER on the record

Sources

iCOUNTER full record

  1. [1]icounter.comiCOUNTER · icounter.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Icounter emerges from stealth to launch cyber risk intelligence category 302506189iCOUNTER via PR Newswire · prnewswire.com · published July 16, 2025 · Tier A
  3. [3]Counter Cyber Threats Before They Strike | iCOUNTERiCOUNTER · undated page, accessed October 25, 2026 · Tier A
  4. [4]CTOS: Counter Threat Operating System | iCOUNTERiCOUNTER · undated page, accessed October 25, 2026 · Tier A
  5. [5]End User Terms of Service | iCOUNTERiCOUNTER · undated page, accessed October 25, 2026 · Tier A
  6. [6]Third-Party Cyber Risk Solutions | iCOUNTERiCOUNTER · undated page, accessed October 25, 2026 · Tier A
  7. [7]About iCOUNTER | The Cyber Risk Intelligence CompanyiCOUNTER · undated page, accessed October 25, 2026 · Tier A
  8. [8]iCOUNTER Alongside SecurityScorecard | Threat DetectioniCOUNTER · undated page, accessed October 25, 2026 · Tier A
  9. [9]The Third Wave of Cybersecurity | iCOUNTERiCOUNTER · undated page, accessed October 25, 2026 · Tier A
  10. [10]Next Generation of Fraud Panel | Jason Brown, iCOUNTERiCOUNTER · undated page, accessed November 10, 2026 · Tier A
  11. [11]Keynote | Intel Led Security for Third Party RiskiCOUNTER · undated page, accessed November 10, 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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