CISO Tribune

Vendor comparison · 2 companies

Prompt Security vs Wallarm

Prompt Security offers protection for both employee use of AI tools and the apps an organization builds. Wallarm is an AI security and API security platform that discovers AI workloads, monitors runtime behavior, enforces policy inline, and generates continuous compliance evidence. CISO Tribune files both under AI model and agent 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.

Change the companies

Up to four companies side by side.

  • Prompt Security
  • Wallarm
Prompt Security vs Wallarm: Products, Customers and Funding Compared
Prompt SecurityPrompt Security offers protection for both employee use of AI tools and the apps an organization builds.prompt.securityWallarmWallarm is an AI security and API security platform that discovers AI workloads, monitors runtime behavior, enforces policy inline, and generates continuous compliance evidence.wallarm.com
What it sells
  • Prompt Fuzzer[4]An open source tool for AI vulnerability assessment.
  • AI Hypervisor[2][7][9]Provides kernel-level runtime enforcement for AI.
Categories
Headquarters
Not stated on its pagesAustin, United States[1]
Founded
2023[1]Not stated on its pages
Ownership and funding
Owned by SentinelOne since 2025[3][7][8][10]Privately held[4][5][11]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • June 4, 2026Wallarm announced general availability of its AI Control Platform, which is available on AWS Marketplace.[17]
  • February 17, 2026Wallarm released its 2026 API ThreatStats Report, an analysis of API attack telemetry, published vulnerabilities, and API-related breaches disclosed in 2025.[18]
G2 and Gartner Peer Insights
  • G2: listed, seen November 10, 2026[10]
  • Gartner Peer Insights: Not stated on its pages
  • G2: listed, seen November 4, 2026[4]
  • Gartner Peer Insights: listed, seen November 4, 2026[5]
Who it fits
Not written yetNot written yet
Last verified
September 27, 2026September 27, 2026

Where they overlap

  • Prompt Security and Wallarm are both filed under AI model and agent security.

Where they differ, field by field

  • Prompt Security's primary category is AI firewalls and guardrails; Wallarm's is API security.
  • Prompt Security is also filed under Workforce AI usage security. Wallarm is also filed under WAF and WAAP.
  • Prompt Security lists Prompt Fuzzer. Wallarm lists AI Hypervisor.
  • Wallarm is headquartered in Austin, United States.
  • Prompt Security was founded in 2023.
  • Prompt Security is owned by SentinelOne, since 2025. Wallarm is privately held.

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.

What it sells: Wallarm

What AI Hypervisor does[2][7][9]
AI Hypervisor is the runtime enforcement layer for enterprise AI agents. AI Hypervisor deploys as a Kubernetes DaemonSet on EKS and instruments every labeled pod at the kernel using eBPF analysis. AI Hypervisor finds every model provider, MCP tool and agent framework running in a cluster, including ones nobody approved.

Questions about Prompt Security and Wallarm

What do Prompt Security and Wallarm sell?
Prompt Security sells Prompt Fuzzer. Wallarm sells AI Hypervisor.
Are Prompt Security and Wallarm in the same category?
They share AI model and agent security. Prompt Security's primary category is AI firewalls and guardrails and Wallarm's is API security.
Where are Prompt Security and Wallarm headquartered?
Wallarm is headquartered in Austin, United States.
When were Prompt Security and Wallarm founded?
Prompt Security was founded in 2023.
Who owns Prompt Security and Wallarm?
Prompt Security is owned by SentinelOne, since 2025. Wallarm is privately held.
What have Prompt Security and Wallarm announced recently?
June 4, 2026: Wallarm announced general availability of its AI Control Platform, which is available on AWS Marketplace.

About Prompt Security

Prompt Security offers protection for both employee use of AI tools and the apps an organization builds. Prompt Security continuously tracks prompts per day in organizations of 500 to 1,000 employees.[4][5]

Prompt Security holds that securing agentic AI is fundamentally different from securing traditional software. Prompt Security states that agents act autonomously, call tools and reason over untrusted input, so prompt injection, identity and runtime behavior have to be governed in real time and not only at the perimeter.

Prompt Security provides a security skill suite for OpenClaw, NanoClaw and Hermes agents.[6]

Prompt Security provides a tool that tracks and analyzes OpenClaw deployments across an organization. Prompt Security provides a tool that tests and hardens a system prompt against dynamic LLM-based attacks.[4][9]

Prompt Security publishes news, research, tools and analysis for security teams responding to AI threats. Prompt Security describes an AI gateway as a centralized layer between an organization's users or applications and the AI models or services they call. An AI gateway, as Prompt Security describes it, lets security teams monitor, control and secure that traffic from one place instead of instrumenting every application separately.[4]

Prompt Security curates an interactive, continuously updated directory of 471 companies building security for agentic AI, organized across 14 functional categories. Both pure-play startups and dedicated AI-security lines from larger vendors are in scope for the Prompt Security directory. Entries in the Prompt Security directory are compiled from vendor websites, product documentation, funding announcements, public company registries and analyst coverage. Placement in the Prompt Security directory reflects publicly stated capabilities, not vendor marketing tiers. Category definitions and threat coverage in the Prompt Security directory are mapped against established, independent frameworks for AI and LLM security. The full dataset behind the Prompt Security directory is open and machine-readable.[2][4][5][6][9]

Prompt Security on the record

Sources

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

Wallarm full record

  1. [1]CompanyWallarm · wallarm.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]wallarm.comWallarm · wallarm.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]Wallarm announces 55 million in series c to transform api security for the ai era 302516432Wallarm via PR Newswire · prnewswire.com · published July 31, 2025 · Tier A
  4. [4]Wallarm API Security Platform Reviews & Product Details - G2G2 · undated page, accessed October 30, 2026 · Tier C
  5. [5]Wallarm Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed October 30, 2026 · Tier C
  6. [6]Wallarm | IntegrationsWallarm · undated page, accessed November 4, 2026 · Tier A
  7. [7]Wallarm | Unified WAAP Platform for APIs, AI, and Web AppsWallarm · undated page, accessed November 4, 2026 · Tier A
  8. [8]AI Control Platform | Wallarm — AI Security for AWSWallarm · undated page, accessed November 4, 2026 · Tier A
  9. [9]AI Hypervisor | Wallarm — Kernel-Level AI EnforcementWallarm · undated page, accessed November 4, 2026 · Tier A
  10. [10]Infrastructure Discovery | Wallarm — AWS AI Asset DiscoveryWallarm · undated page, accessed November 4, 2026 · Tier A
  11. [11]Kubernetes API Security: Ingress, Sidecar & eBPF | WallarmWallarm · undated page, accessed November 4, 2026 · Tier A
  12. [12]API Security for Google Cloud (GCP) | WallarmWallarm · undated page, accessed November 4, 2026 · Tier A
  13. [13]Wallarm | Protect all your Azure assetsWallarm · undated page, accessed November 4, 2026 · Tier A
  14. [14]API Security and management with Wallarm and KongWallarm · undated page, accessed November 4, 2026 · Tier A
  15. [15]Wallarm For MuleSoftWallarm · undated page, accessed November 4, 2026 · Tier A
  16. [16]Protect Agentic AIWallarm · undated page, accessed November 4, 2026 · Tier A
  17. [17]Wallarm Launches AI Control Platform Bringing Runtime Visibility and Enforcement to Enterprise AIWallarm · published June 4, 2026 · Tier A
  18. [18]New Research Reveals APIs are the Single Most Exploited Attack SurfaceBusiness Wire · published February 17, 2026 · Tier A

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