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Salt Security

API security platform and threat protection

Overview

Salt Security protects organizations by securing APIs with a cloud-based security platform that discovers, monitors, and protects API traffic. It continuously inventories all APIs (including shadow and zombie APIs), identifies vulnerabilities, blocks attackers, and speeds up incident response. It differentiates itself with continuous API discovery, a focus on data exposure, and Salt Labs, an in-house API security research team. Its goal is to enable secure API-driven software by preventing attacks and giving organizations a clear view of all their APIs and associated risks.

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About Salt Security

Simplify's Rating
Why Salt Security is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Enterprise SoftwareCybersecurity

Company Size

201-500

Company Stage

Series D

Total Funding

$270.1M

Headquarters

Palo Alto, CA

Founded

2018

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What believers are saying

  • October 28, 2026 Autonomous Defense automates blocking, revocation, and remediation across customer stacks.
  • September 22, 2026 native AI-DR targets prompt injection, jailbreaks, and downstream API attacks.
  • October 13, 2026 research found 49.8% unauthorized agent actions, sharpening budget justification.

What critics are saying

  • AWS, CrowdStrike, and API gateways can bundle Salt's core capabilities by 2027.
  • Salt's October 2026 expansion into agentic AI broadens scope beyond API security competence.
  • If agentic-security hype cools, Salt loses narrative leverage and buyer urgency quickly.

What makes Salt Security unique

  • Salt Security unified API, agentic, and LLM protection across models, MCP, and APIs.
  • Salt Labs telemetry from hundreds of customer environments strengthens threat context and product credibility.
  • AWS partner integration spans API Gateway, WAF, Bedrock, Lambda, EKS, and CloudTrail.

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Funding

Total Funding

$270.1M

Above

Industry Average

Funded Over

6 Rounds

Notable Investors:
Series D funding is typically for companies that are already well-established but need more funding to continue their growth. This round is often used to stabilize the company or prepare for an IPO.
Series D Funding Comparison
Above Average

Industry standards

$77M
$70M
$80M
$100M
$140M

Benefits

  • Company Equity
  • Wellness Program
  • Remote Work Options
  • Professional Development Budget

Growth & Insights and Company News

6 month growth

0%

1 year growth

0%

2 year growth

0%
Business Wire
Oct 31st, 2026
Salt Security Closes $20 Million Series A Funding Round Led by Tenaya Capital

Salt Security announces it has raised $20 million in Series A funding led by Tenaya Capital.

PR Newswire
Oct 28th, 2026
Salt Security launches Autonomous Defense to block threats and revoke risky access automatically

Salt Security has launched Autonomous Defense for its Agentic Security Platform, expanding its Salt Workflows tool to act on threats instead of stopping at an alert or ticket. The Palo Alto company announced the feature on October 28, 2026. The system can block malicious activity, revoke risky access to AI agents and MCP tools, and start fixes across systems customers already use. Customers decide which findings trigger immediate action and which need approval, and an audit trail is kept. Workflows include a drag-and-drop builder and more than 200 connectors. Salt Workflows is available to customers now. "An alert doesn't stop an attack. Action does," said chief executive officer Roey Eliyahu.

PR Newswire
Sep 22nd, 2026
Salt Security extends its Agentic Security Platform with Native AI Detection and Response.

Salt Security extends its Agentic Security Platform with Native AI Detection and Response. Sep 22, 2026, 08:00 ET New LLM runtime protection connects prompt injection to downstream MCP and API attacks, while helping enterprises close gaps in existing AI protection PALO ALTO, Calif., Sept. 22, 2026 /PRNewswire/ - Salt Security, the leader in agentic and API security, today announced native AI Detection and Response (AI-DR) capabilities within the Salt Agentic Security Platform. The new capabilities provide real-time LLM protection against direct and indirect prompt injection, jailbreak attempts, unsafe model behavior, and other runtime threats. Prompt injection is the top ranked risk in the OWASP Top 10 for LLM Applications 2026, and it takes two forms, direct and indirect, both of which the new capabilities detect in real time. Salt also brings the AI guardrails and gateways enterprises already use into one security view, helping teams apply consistent protection across models, agents, MCP servers, tools, and downstream APIs. Protecting the full agentic path AI agents connect models to tools and business systems. An attack that starts with a malicious prompt can expose those connections and lead to unauthorized access or actions downstream. This is not hypothetical: in Salt Security's 2H 2026 State of Agentic AI and API Security survey, nearly half of organizations (49.8%) confirmed or suspected that an AI agent took an action they did not intend, expect, or authorize in the past year, and only 12.5% can consistently trace an agent's full path from the initial prompt through the MCP servers and APIs it reaches. Security teams need to see how an attack moves across these layers to understand what is at risk. AI-DR is built into Salt Agentic Detection and Response (AG-DR), extending its runtime protection to the LLM layer. The Salt Agentic Security Graph connects agents to their models, Model Context Protocol (MCP) servers, tools, and downstream APIs. With native AI-DR, teams can connect an attack against the model to subsequent MCP and API attacks in the same platform. AG-DR and Agentic Security Posture Management (AG-SPM) form the Salt Agentic Security Platform. AG-SPM helps teams understand their agents and security gaps, while AG-DR detects and connects attacks across those agents and the systems they use. Seeing how AI attacks reach business systems For example, an attacker could trick a billing agent into revealing information about a refund tool on an MCP server and the API behind it. The attacker could then exploit that API - directly or through the agent to attempt unauthorized refunds. What began as a malicious prompt has become an attack on a payment system. Salt shows these steps together, from the prompt injection through the MCP server to the API attack. Security teams can see how the attack started, what it targeted, and which business systems are at risk, even when the attacker moves beyond the agent to attack an API directly. Unified Visibility Across AI Guardrails and Native Protection Where Coverage Is Missing Enterprises use AI guardrails across cloud platforms, endpoint and SASE solutions, AI gateways, and managed AI services. Each control protects the interactions it covers, leaving teams to identify inconsistencies and gaps across environments. Through AG-SPM and the Agentic Security Graph, Salt gives teams one view of these guardrail configurations and the agents they protect. Where protection is missing, including in homegrown agents running in Kubernetes, Salt can fill the gap with native AI-DR within AG-DR. Customers can establish more consistent protection while keeping their existing gateways and security products. "An attack on an AI model can become an attack on the systems that run the business," said Roey Eliyahu, co-founder and CEO of Salt Security. "Our native AI-DR protects LLM interactions and connects what happens at the model to the tools and APIs downstream. Teams can see the full attack, understand what is at risk, and fill protection gaps while keeping the guardrails they already use." Availability Native AI-DR capabilities are available within Salt AG-DR as part of the Salt Agentic Security Platform. Visit salt.security/demo-request for more information. About Salt Security Salt Security is the leader in agentic and API security, protecting the world's most innovative enterprises from AI agent and API attacks. AI is shifting from chatbots that answer to agents that act, and Salt secures the entire agentic path, from AI-generated code to runtime, across models, MCP servers, tools, and downstream APIs. Founded in 2016, Salt Security is backed by Sequoia Capital, S Capital, Tenaya Capital, Salesforce Ventures, Advent International, and other leading investors. For more information, visit salt.security. SOURCE Salt Security

Salt Security
Sep 17th, 2026
Salt Security Raises $70 million in Series C Funding

Salt Security secures $70 million in Series C funding, led by Advent International with participation from Alkeon Capital and DFJ Growth. Learn more.

PR Newswire
Aug 4th, 2026
Salt Security launches first AWS WAF managed ruleset for AI agent and API protection

Salt Security has launched the first AWS WAF managed ruleset designed to protect both APIs and AI agents. Announced at Black Hat USA 2026, the ruleset is available through the AWS WAF Partner Managed Rules programme in AWS Marketplace. The Salt Managed Rules feature industry-first Model Context Protocol awareness, identifying traffic from MCP endpoints and blocking unauthenticated access. The ruleset also includes advanced API threat detection, blocking attack vectors such as credential brute force, excessive GraphQL queries, and JWT-based anomalies. AWS WAF customers can attach the ruleset to existing web ACLs directly from the AWS console, with deployment taking minutes and requiring no additional infrastructure. The ruleset is available now in AWS Marketplace across all commercial AWS Regions and globally via Amazon CloudFront.

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