CISO Tribune

Vendor comparison · 2 companies

Arexdata vs Prompt Security

Arexdata sells Arexdata DSPM, a data security posture management platform that helps identify sensitive data, who can access it, how it is used, and where the risks lie, including those associated with the use of AI. Prompt Security offers protection for both employee use of AI tools and the apps an organization builds. CISO Tribune files both under Workforce AI usage 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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  • Arexdata
  • Prompt Security
Arexdata vs Prompt Security: Products, Customers and Funding Compared
ArexdataArexdata sells Arexdata DSPM, a data security posture management platform that helps identify sensitive data, who can access it, how it is used, and where the risks lie, including those associated with the use of AI.arexdata.comPrompt SecurityPrompt Security offers protection for both employee use of AI tools and the apps an organization builds.prompt.security
What it sells
  • Arexdata DSPM[2][3]A platform for identifying sensitive data, who can access it, how it is used and where the risks lie, including those tied to AI use.
  • Prompt Fuzzer[4]An open source tool for AI vulnerability assessment.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
Not stated on its pages2023[1]
Ownership and funding
Not stated on its pagesOwned by SentinelOne since 2025[3][7][8][10]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pagesNot stated on its pages
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 10, 2026[10]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetNot written yet
Last verified
October 23, 2026September 27, 2026

Where they overlap

  • Arexdata and Prompt Security are both filed under Workforce AI usage security.

Where they differ, field by field

  • Arexdata's primary category is Data security posture management; Prompt Security's is AI firewalls and guardrails.
  • Prompt Security is also filed under AI model and agent security.
  • Arexdata lists Arexdata DSPM. Prompt Security lists Prompt Fuzzer.
  • Prompt Security was founded in 2023.
  • Prompt Security is owned by SentinelOne, since 2025.

What it sells: Arexdata

What Arexdata DSPM does[2][3]
Arexdata DSPM is one platform built for end-to-end visibility across data, users, permissions, activity, and AI. Arexdata DSPM protects information in the cloud, SaaS, on-premises, and on endpoints.

What it sells: Prompt Security

What Prompt Fuzzer does[4]
Prompt Fuzzer is listed under AI Security Tools on the Prompt Security site. The site describes it as an open source tool for AI vulnerability assessment.

Questions about Arexdata and Prompt Security

What do Arexdata and Prompt Security sell?
Arexdata sells Arexdata DSPM. Prompt Security sells Prompt Fuzzer.
Are Arexdata and Prompt Security in the same category?
They share Workforce AI usage security. Arexdata's primary category is Data security posture management and Prompt Security's is AI firewalls and guardrails.
When were Arexdata and Prompt Security founded?
Prompt Security was founded in 2023.
Who owns Arexdata and Prompt Security?
Prompt Security is owned by SentinelOne, since 2025.

About Arexdata

Arexdata sells Arexdata DSPM, a data security posture management platform that helps identify sensitive data, who can access it, how it is used, and where the risks lie, including those associated with the use of AI. Arexdata DSPM is one platform built for end-to-end visibility across data, users, permissions, activity, and AI. Arexdata DSPM brings data, users, permissions, activity, AI and endpoints together in a single platform.[2][3]

Arexdata DSPM identifies and classifies sensitive information so that customers know what they have, where it is, and what level of protection it requires. Arexdata DSPM locates PII, PCI, PHI, intellectual property and other regulated data, and classifies it automatically using rules and tagging. Arexdata DSPM identifies sensitive data, access points, and risks across an entire infrastructure.[2][3]

Arexdata DSPM shows who can access each piece of data and helps identify excessive, inherited, or redundant permissions. Arexdata DSPM allows customers to apply the principle of least privilege. Arexdata DSPM applies Zero-Trust and least-privilege principles with traceability.[1][2][3]

Arexdata DSPM monitors accesses, changes, and actions so customers can track who did what, when, and to which data, without relying on ad hoc audits. Arexdata DSPM monitors accesses, changes, movements and data use to investigate incidents, detect risky behavior and generate evidence.[2][3]

Arexdata DSPM can revoke permissions, launch workflows, generate alerts or run actions through a customer's SIEM, SOAR and DLP tools. Arexdata DSPM allows customers to alert, escalate, or resolve each situation, either immediately or on a set schedule. Arexdata DSPM selectively mitigates exposures, automates where appropriate, and maintains oversight of critical actions.[2][3]

Arexdata DSPM detects Shadow AI, sensitive information exposed in prompts, anomalous behavior, and activity from users, agents, and non-human entities. Arexdata DSPM monitors which AI tools are used, what data they consume, and how users and agents interact with sensitive information. Arexdata detects the presence of sensitive data in chats and alerts administrators and users to prevent data exfiltration. Arexdata DSPM runs its AI risk analytics locally, and no data leaves the customer's infrastructure.[1][2][3]

Arexdata DSPM protects information in the cloud, SaaS, on-premises, and on endpoints. Arexdata DSPM analyzes information locally so that data does not have to leave a customer's infrastructure. Arexdata DSPM adds context to each exposure according to sensitivity, access and impact.[1][2][3]

Arexdata on the record

Sources

Arexdata full record

  1. [1]arexdata.comArexdata · arexdata.com · undated page, accessed October 23, 2026 · Tier A
  2. [2]The DSPM Platform \ Data & AI Security \ ArexdataArexdata · undated page, accessed November 10, 2026 · Tier A
  3. [3]Plataforma de Seguridad del Dato y la IA \ Arexdata DSPMArexdata · undated page, accessed November 10, 2026 · Tier A

Prompt Security full record

  1. [1]Prompt security partners with f5 to secure genai applications with a firewall for ai 302131373Prompt Security via PR Newswire · prnewswire.com · published April 30, 2024 · Tier A
  2. [2]Securing ai promptSentinelOne · sentinelone.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]Sentinelone completes acquisition of prompt securitySentinelOne via The Globe and Mail · theglobeandmail.com · published September 5, 2025 · Tier A
  4. [4]Prompt Security | From SentinelOnePrompt Security · undated page, accessed October 27, 2026 · Tier A
  5. [5]AI Security | AI Glossary | Prompt SecurityPrompt Security · undated page, accessed October 27, 2026 · Tier A
  6. [6]ClawSec: A Security Skill Suite for OpenClaw AgentsPrompt Security · undated page, accessed October 27, 2026 · Tier A
  7. [7]AI Security Startups Map — Agentic AI Vendors by CategoryPrompt Security · undated page, accessed October 27, 2026 · Tier A
  8. [8]About this Map & Methodology — AI Security Startups MapPrompt Security · undated page, accessed October 27, 2026 · Tier A
  9. [9]OneClaw DashboardPrompt Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]Prompt Security Pros and Cons | User Likes & DislikesG2 · undated page, accessed November 10, 2026 · Tier C

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