CISO Tribune

Vendor comparison · 2 companies

Proofpoint vs Trustifi

Proofpoint sells security that covers data and AI as one system, with access that follows intent. Trustifi sells a platform that uses AI, behavioral analysis and threat intelligence to detect phishing, business email compromise and malicious content across email, Teams, OneDrive and SharePoint. CISO Tribune files both under Email security and Collaboration app security. 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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  • Proofpoint
  • Trustifi
Proofpoint vs Trustifi: Products, Customers and Funding Compared
ProofpointProofpoint sells security that covers data and AI as one system, with access that follows intent.proofpoint.comTrustifiTrustifi sells a platform that uses AI, behavioral analysis and threat intelligence to detect phishing, business email compromise and malicious content across email, Teams, OneDrive and SharePoint.trustifi.com
What it sells
  • ITM / Endpoint DLP[19]Endpoint software whose main features are supported on Windows, Mac and Linux.
  • Proofpoint Threat Intelligence Services[21]A Proofpoint team that provides Threat Insights.
  • ET Intel[21]A subscription that gives full access to all insights.
  • ET Pro[21]A subscription that gives full access to all insights.
  • Outbound Shield[2][3][9]Scans and encrypts outgoing email according to administrators' policies.
  • Account Takeover Protection[2][5][11]Monitors and reports suspicious user email behavior using AI engines.
  • Email Security Awareness Training[12]Email security awareness training platform for staff.
Categories
Headquarters
Sunnyvale, United States[1]Not stated on its pages
Founded
2002[1]Not stated on its pages
Ownership and funding
Owned by Thoma Bravo since 2021[3][12][14][15]Privately held[1][4]
Named customers
  • Xcel Energy[4]
  • Princeton University[5]
  • Columbia University[6]
  • Informatica[7]
  • California Department of Motor Vehicles[8]
Not stated on its pages
Recent news
  • October 15, 2026Proofpoint and Varonis announced a definitive agreement under which Proofpoint will acquire Varonis in an all-cash transaction valued at approximately $6.3 billion.[16]
  • September 22, 2026Proofpoint announced the Agentic Collaboration Security system, combining an intent-based detection model with agentic capabilities for email, collaboration tools and the browser.[17]
  • September 22, 2026Proofpoint announced the Proofpoint Agentic Data and AI Security system, built to secure AI and data as one connected risk.[18]
  • September 3, 2026Proofpoint introduced the SOC Analyst Agent, an AI capability that helps security teams investigate threats across Proofpoint security data, built with OpenAI models.[9]
  • August 4, 2026Proofpoint launched an OEM program that lets technology providers, security vendors and managed service providers embed its threat intelligence and detection capabilities.[10]
Not stated on its pages
G2 and Gartner Peer Insights
  • G2: listed, seen November 10, 2026[14]
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 3, 2026[4]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, Proofpoint addresses cyberattacks on organisations where people and AI agents work side by side across email, cloud and collaboration tools. The customers Proofpoint quotes include an organisation using Proofpoint for AI security for employees using AI services and tools, and for AI security in the tools and agents it is building. A quoted Proofpoint customer runs email security, DLP and insider threat management that work together, with its analyst using a single security console.Not written yet
Last verified
October 10, 2026September 27, 2026

Where they overlap

  • Email security is the primary category of both Proofpoint and Trustifi; both are also filed under Collaboration app security.

Where they differ, field by field

  • Proofpoint is also filed under Human risk management and Insider risk management. Trustifi is also filed under Data loss prevention and Security awareness training.
  • Proofpoint lists ITM / Endpoint DLP, Proofpoint Threat Intelligence Services, ET Intel and ET Pro. Trustifi lists Outbound Shield, Account Takeover Protection and Email Security Awareness Training.
  • Proofpoint is headquartered in Sunnyvale, United States.
  • Proofpoint was founded in 2002.
  • Proofpoint is owned by Thoma Bravo, since 2021. Trustifi is privately held.
  • Proofpoint publicly names Xcel Energy, Princeton University, Columbia University, Informatica and California Department of Motor Vehicles.

How they differ

CISO Tribune files both Proofpoint and Trustifi under Email security as the primary category, and both also appear under Collaboration app security. CISO Tribune files Proofpoint additionally under Human risk management and Insider risk management, while it files Trustifi additionally under Data loss prevention and Security awareness training. Proofpoint sells ITM / Endpoint DLP, endpoint software whose main features are supported on Windows, Mac and Linux. Proofpoint also sells the Proofpoint Threat Intelligence Services team's Threat Insights, along with ET Intel and ET Pro subscriptions. Trustifi sells Outbound Shield, which scans and encrypts outgoing email according to administrators' policies, and Account Takeover Protection, which monitors suspicious user email behavior using AI engines. Trustifi also sells an Email Security Awareness Training platform for staff.

Proofpoint is headquartered in Sunnyvale, United States, was founded in 2002, and has been owned by Thoma Bravo since 2021. Trustifi is privately held. Proofpoint publicly names Xcel Energy, Princeton University, Columbia University, Informatica and California Department of Motor Vehicles as customers.

On October 15, 2026, Proofpoint and Varonis announced a definitive agreement under which Proofpoint will acquire Varonis in an all-cash transaction valued at approximately $6.3 billion. On September 22, 2026, Proofpoint announced the Agentic Collaboration Security system for email, collaboration tools and the browser. On September 3, 2026, Proofpoint introduced the SOC Analyst Agent, built with OpenAI models. Trustifi describes a platform that uses AI, behavioral analysis and threat intelligence to detect phishing, business email compromise and malicious content across email, Teams, OneDrive and SharePoint.

What it sells: Proofpoint

What Proofpoint Threat Intelligence Services does[21]
Threat Insights are provided by the Proofpoint Threat Intelligence Services team. Premium Threat Intelligence Services analysts curate threat news highlights.
What ET Intel does[21]
Subscribing to ET Intel or ET Pro gives full access to all insights. Threat Insights are provided by the Proofpoint Threat Intelligence Services team.
What ET Pro does[21]
Subscribing to ET Intel or ET Pro gives full access to all insights. Threat Insights are provided by the Proofpoint Threat Intelligence Services team.

What it sells: Trustifi

What Outbound Shield does[2][3][9]
Outbound Shield automatically scans and encrypts outgoing email messages according to administrators' policies. Emails that contain sensitive information are automatically secured.
What Account Takeover Protection does[2][5][11]
Account takeover protection monitors and reports suspicious company user email behavior, using AI engines. It employs machine learning to profile typical login behavior. Security account administrators are notified automatically when compromised access to a user login account is detected.

Questions about Proofpoint and Trustifi

What do Proofpoint and Trustifi sell?
Proofpoint sells ITM / Endpoint DLP, Proofpoint Threat Intelligence Services, ET Intel and ET Pro. Trustifi sells Outbound Shield, Account Takeover Protection and Email Security Awareness Training.
Are Proofpoint and Trustifi in the same category?
Yes. Email security is the primary category of both on CISO Tribune.
Where are Proofpoint and Trustifi headquartered?
Proofpoint is headquartered in Sunnyvale, United States.
When were Proofpoint and Trustifi founded?
Proofpoint was founded in 2002.
Who owns Proofpoint and Trustifi?
Proofpoint is owned by Thoma Bravo, since 2021. Trustifi is privately held.
Which customers do Proofpoint and Trustifi name?
Proofpoint publicly names Xcel Energy, Princeton University, Columbia University, Informatica and California Department of Motor Vehicles.
Who are Proofpoint and Trustifi sold to?
From its own pages, Proofpoint addresses cyberattacks on organisations where people and AI agents work side by side across email, cloud and collaboration tools.
What have Proofpoint and Trustifi announced recently?
October 15, 2026: Proofpoint and Varonis announced a definitive agreement under which Proofpoint will acquire Varonis in an all-cash transaction valued at approximately $6.3 billion.

About Proofpoint

Proofpoint sells security that covers data and AI as one system, with access that follows intent. Proofpoint describes the problem it addresses as cyberattacks evolving as people and AI agents work side by side across email, cloud and collaboration tools. Proofpoint describes its approach as understanding intent in order to protect every interaction. Proofpoint has signed a definitive agreement to acquire Varonis.[2]

Proofpoint uses intent-based detection models and autonomous agents to stop AI-scaled threats across the attack chain.

Proofpoint covers visibility into sensitive data and every person, AI app and agent using it, including shadow AI. Proofpoint covers stopping data loss and misuse in real time across employee prompts, files and agent actions. Proofpoint covers control over who and what can reach data, with a full audit trail.

A Proofpoint customer describes using Proofpoint in two areas: AI security for employees using AI services and tools, and AI security in the tools and agents that customer is building. A Proofpoint customer describes Proofpoint email security, DLP and insider threat management working together, with its analyst using a single security console for all possible issues.[2]

ITM / Endpoint DLP features are supported on Windows, Mac and Linux, depending on the feature. ObserveIT is a division of Proofpoint. ObserveIT installation includes granting the ObserveIT Service Account user the dbcreator role on the SQL server. The service account permission is required only during the installation phase and may be removed once installation is complete. Removing that permission prevents ObserveIT from creating additional archive databases with the service account.[19][20]

Proofpoint Threat Intelligence Services provides Threat Insights. Premium Threat Intelligence Services analysts curate threat news highlights. Proofpoint offers ET Intel and ET Pro subscriptions that give full access to all insights.[21]

Proofpoint research examines how 1,600 CISOs across 16 global markets are navigating AI risk, human behavior, data security and rising business expectations. Proofpoint publishes guidance for reducing AI agent risk while supporting innovation.[2][13]

Proofpoint on the record

Sources

Proofpoint full record

  1. [1]AboutProofpoint · proofpoint.com · published April 21, 2025 · Tier A
  2. [2]ProductsProofpoint · proofpoint.com · published September 24, 2026 · Tier A
  3. [3]Thoma bravo completes acquisition of proofpointThoma Bravo · thomabravo.com · published August 31, 2021 · Tier A
  4. [4]Xcel energyProofpoint · proofpoint.com · undated page, accessed October 10, 2026 · Tier A
  5. [5]Princeton university safe with proofpoint email securityProofpoint · proofpoint.com · undated page, accessed October 10, 2026 · Tier A
  6. [6]Columbia universityProofpoint · proofpoint.com · undated page, accessed October 10, 2026 · Tier A
  7. [7]InformaticaProofpoint · proofpoint.com · undated page, accessed October 10, 2026 · Tier A
  8. [8]California department motor vehiclesProofpoint · proofpoint.com · undated page, accessed October 10, 2026 · Tier A
  9. [9]Proofpoint soc analyst agent openai daybreakProofpoint · proofpoint.com · published September 3, 2026 · Tier A
  10. [10]Proofpoint launches oem program help security providers embed trusted threatProofpoint · proofpoint.com · published August 4, 2026 · Tier A
  11. [11]Proofpoint launches dedicated msp business unit and introduces 365 totalProofpoint · proofpoint.com · published May 13, 2026 · Tier A
  12. [12]Enterprise Cybersecurity Solutions, Services & Training | Proofpoint USProofpoint · undated page, accessed October 27, 2026 · Tier A
  13. [13]Integrating ITM On-Prem (ObserveIT) with a Service Desk SystemProofpoint · undated page, accessed October 27, 2026 · Tier A
  14. [14]Proofpoint Core Email Protection Reviews & Product Details - G2G2 · undated page, accessed October 27, 2026 · Tier C
  15. [15]Proofpoint Acquires Acuvity to Deliver AI Security and Governance Across the Agentic WorkspaceProofpoint · published February 12, 2026 · Tier A
  16. [16]Proofpoint to Acquire Varonis in a $6.3 Billion TransactionProofpoint · published October 15, 2026 · Tier A
  17. [17]Proofpoint Stops the Attacks Traditional Defenses Miss in the AI EraProofpoint · published September 22, 2026 · Tier A
  18. [18]Proofpoint Breaks Down the Divide Between Data Security and AI Security with the Industry’s First Unified Agentic SystemProofpoint · published September 22, 2026 · Tier A
  19. [19]ITM / Endpoint DLP Windows / Mac / Linux SupportProofpoint · published November 9, 2026 · Tier A
  20. [20]Assigning SQL Permissions to the Service Account UserProofpoint · undated page, accessed November 10, 2026 · Tier A
  21. [21]Proofpoint: Emerging Threats IntelligenceProofpoint · published November 9, 2026 · Tier A

Trustifi full record

  1. [1]Trustifi raises 25m series a to scale ai email security platform 302471421Trustifi via PR Newswire · prnewswire.com · published June 3, 2025 · Tier A
  2. [2]ProductsTrustifi · trustifi.com · published September 15, 2026 · Tier A
  3. [3]Integrations · Trustifi DocumentationTrustifi · undated page, accessed October 29, 2026 · Tier A
  4. [4]Trustifi Email Security Reviews & Product DetailsG2 · undated page, accessed October 29, 2026 · Tier C
  5. [5]Trustifi | Better Security for Email and Microsoft Office 365Trustifi · undated page, accessed November 3, 2026 · Tier A
  6. [6]Email Anti Spoofing | Security SoftwareTrustifi · undated page, accessed November 3, 2026 · Tier A
  7. [7]Email Security Services for Companies | AI-Powered Solutions | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A
  8. [8]Products and Features | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A
  9. [9]Outbound Email Security | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A
  10. [10]Collaboration Shield | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A
  11. [11]Account Takeover Protection | Compromised Account DetectionTrustifi · undated page, accessed November 3, 2026 · Tier A
  12. [12]Email Security Awareness Training | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A
  13. [13]Advanced Cloud Email Archiving | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A

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