CISO Tribune

Vendor comparison · 2 companies

Polymer vs Sentra

Polymer sells a platform to identify, analyze, and mitigate real-time security risks across AI and SaaS ecosystems. Sentra sells a platform that finds sensitive datasets across cloud, SaaS, on-prem and AI services and shows which people and AI agents can reach them. CISO Tribune files both under Data security posture 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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  • Polymer
  • Sentra
Polymer vs Sentra: Products, Customers and Funding Compared
PolymerPolymer sells a platform to identify, analyze, and mitigate real-time security risks across AI and SaaS ecosystems.polymerhq.ioSentraSentra sells a platform that finds sensitive datasets across cloud, SaaS, on-prem and AI services and shows which people and AI agents can reach them.sentra.io
What it sells
  • Polymer DSPMA platform that identifies, classifies and monitors sensitive data across SaaS and AI tools in motion and at rest.
  • Polymer DLP for AIData loss prevention controls aimed at risks introduced by AI tools and agents handling company data.
  • Polymer SecureRAG[1]A tool described as AI-powered data security for deployment of LLM agents in enterprises.
  • Shadow AI DLP[3]A module of the platform aimed at sensitive data being shared with AI applications.
Categories
Headquarters
Not stated on its pagesNew York, United States[1]
Founded
Not stated on its pages2021[1]
Ownership and funding
Not stated on its pagesPrivately held[13][15][19]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • November 4, 2026Sentra announced a $150 million strategic investment led by Capital One Ventures, with a Capital One representative joining its board of directors.[18]
  • June 2, 2026Sentra announced the launch of its Platform for Continuous AI Data Readiness and Governance.[12]
  • March 25, 2026Sentra launched a solution for securely adopting Google Workspace with Gemini.[17]
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetFrom its own pages, Sentra sells mainly to organizations that hold sensitive data across cloud, SaaS, on-prem and AI services. Sentra addresses organizations that want a safer rollout of copilots and agents. Sentra publishes offerings for financial organizations that need to limit access to financial data with least-privilege policies, for healthcare organizations that hold PHI in cloud environments, and for retailers with e-commerce systems. Sentra says scanning occurs in the customer's environment and data never leaves it, which speaks to buyers who want data to stay in their own environment.
Last verified
October 28, 2026September 27, 2026

Where they overlap

  • Data security posture management is the primary category of both Polymer and Sentra.

Where they differ, field by field

  • Polymer is also filed under Data loss prevention, SaaS security posture and Workforce AI usage security.
  • Polymer lists Polymer DSPM, Polymer DLP for AI and Polymer SecureRAG. Sentra lists Shadow AI DLP.
  • Sentra is headquartered in New York, United States.
  • Sentra was founded in 2021.
  • Sentra is privately held.

How they differ

CISO Tribune files Polymer under Data security posture management, Data loss prevention, SaaS security posture and Workforce AI usage security, with Data security posture management as its primary category. CISO Tribune files Sentra under Data security posture management only, which is also its primary category. Both companies therefore sell in the same primary category, and both address data handled by AI tools.

Polymer sells Polymer DSPM, Polymer DLP for AI and Polymer SecureRAG, the last described as AI-powered data security for deploying LLM agents in enterprises. Polymer says it remediates violations at runtime by redacting sensitive data, revoking file access and triggering custom workflows, and it generates audit logs mapped to HIPAA, SOC 2, CCPA and GDPR. Sentra sells a platform that finds sensitive datasets across cloud, SaaS, on-prem and AI services and shows which people and AI agents can reach them. It also sells Shadow AI DLP, a module aimed at sensitive data being shared with AI applications. Sentra says scanning runs inside the customer's environment. Sentra publishes offerings for financial organizations, healthcare organizations that hold PHI, and retailers.

Sentra is headquartered in New York, United States, was founded in 2021, and is privately held. On November 4, 2026, Sentra announced a $150 million strategic investment led by Capital One Ventures, with a Capital One representative joining its board of directors. Sentra also announced its Platform for Continuous AI Data Readiness and Governance on June 2, 2026, and a solution for adopting Google Workspace with Gemini on March 25, 2026.

Questions about Polymer and Sentra

What do Polymer and Sentra sell?
Polymer sells Polymer DSPM, Polymer DLP for AI and Polymer SecureRAG. Sentra sells Shadow AI DLP.
Are Polymer and Sentra in the same category?
Yes. Data security posture management is the primary category of both on CISO Tribune.
Where are Polymer and Sentra headquartered?
Sentra is headquartered in New York, United States.
When were Polymer and Sentra founded?
Sentra was founded in 2021.
Who owns Polymer and Sentra?
Sentra is privately held.
Who are Polymer and Sentra sold to?
From its own pages, Sentra sells mainly to organizations that hold sensitive data across cloud, SaaS, on-prem and AI services.
What have Polymer and Sentra announced recently?
November 4, 2026: Sentra announced a $150 million strategic investment led by Capital One Ventures, with a Capital One representative joining its board of directors.

About Polymer

Polymer sells a platform to identify, analyze, and mitigate real-time security risks across AI and SaaS ecosystems. Polymer describes the problem as one where AI agents work alongside employees in the tools they use every day.[1][2]

Polymer secures data the moment AI or humans generate or access it. Polymer lets organizations create and manage context-driven security policies tailored to their own requirements and AI usage. Polymer groups human and non-human identities to control how they can interact with data.[1][2]

Polymer monitors data in motion and at rest based on custom security policies. Polymer provides reports and risk scores that expose vulnerabilities such as shadow AI usage, insider threats, and misconfiguration. Polymer remediates violations at runtime by redacting sensitive data, revoking file access, and triggering custom workflows with or without human review.[2]

Polymer generates audit logs mapped to regulatory frameworks such as HIPAA, SOC 2, CCPA, and GDPR. Polymer includes role-based access controls (RBAC) and is SOC 2 Type II compliant.[1][2]

Polymer on the record

Sources

Polymer full record

  1. [1]polymerhq.ioPolymer · polymerhq.io · undated page, accessed October 28, 2026 · Tier A
  2. [2]Polymer Runtime Data Security | Secure AI WorkflowsPolymer · undated page, accessed November 10, 2026 · Tier A

Sentra full record

  1. [1]Sentra adds advanced data detection and response solutionSentra · sentra.io · undated page, accessed September 27, 2026 · Tier A
  2. [2]Sentra closes 50 million series b amid surging demand for securing data for ai adoptionSentra via PR Newswire · sentra.io · published April 22, 2025 · Tier A
  3. [3]Data Security Platform | Cloud Security | SentraSentra · undated page, accessed October 23, 2026 · Tier A
  4. [4]Sentra | AI Data Security & AI Data Governance PlatformSentra · undated page, accessed October 23, 2026 · Tier A
  5. [5]Solution: Financial ServicesSentra · undated page, accessed October 23, 2026 · Tier A
  6. [6]Solution HealthcareSentra · undated page, accessed October 23, 2026 · Tier A
  7. [7]Solution: RetailSentra · undated page, accessed October 23, 2026 · Tier A
  8. [8]Trust Center | SentraSentra · undated page, accessed October 23, 2026 · Tier A
  9. [9]Sentra PricingSentra · undated page, accessed October 23, 2026 · Tier A
  10. [10]About Sentra: Get to Know the Leadership TeamSentra · undated page, accessed October 23, 2026 · Tier A
  11. [11]Integrations | SentraSentra · undated page, accessed October 23, 2026 · Tier A
  12. [12]Sentra Launches Platform to Deliver the Missing Data Readiness Layer for Enterprise AISentra · published June 2, 2026 · Tier A
  13. [13]Sentra Reviews 2026: Details, Pricing, & Features - G2G2 · undated page, accessed October 23, 2026 · Tier C
  14. [14]Data Discovery and Classification | SentraSentra · undated page, accessed November 5, 2026 · Tier A
  15. [15]Automated Remediation | SentraSentra · undated page, accessed November 5, 2026 · Tier A
  16. [16]Continuous AI Compliance | SentraSentra · undated page, accessed November 5, 2026 · Tier A
  17. [17]Sentra Launches the Only Scalable Google Workspace Gemini Security to Protect Sensitive Data from AI RiskPR Newswire · published March 25, 2026 · Tier A
  18. [18]Sentra Raises $150M to Secure Data for the Agentic AI EraPR Newswire · published November 4, 2026 · Tier A
  19. [19]Sentra Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed November 5, 2026 · Tier C

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