Seed Cybersecurity companies in San Francisco

Akto is the fastest growing AI Security platform for your teams to secure AI agents, MCPs, LLMs, Agent skills, gen AI apps in your organization. Akto's platform helps teams build their Agentic AI Security program through Shadow AI Discovery, AI Governance, AI red teaming, monitoring, and enforcing guardrails on Agents, LLMs, MCPs, Skills, Gen AI apps. 100+ Modern AI Security teams globally trust Akto for:- AI Agent Security- AI Governance- Shadow AI- Guardrails- AI RedteamingAkto is headquartered in San Francisco and backed by leading venture capital firms, including Accel Partners and Alumni Ventures, with angel and advisory from Tenable Founder, Notion Founder, Sentry CEO, Jim Manico, and Synack CTO, among others.Akto has been featured in Forbes, Nasdaq, Dark Reading, Venture Beat, and CSO Online as one of the cybersecurity startups to watch.Akto is a representative vendor in Gartner® Hype Cycle for AI Security and mentioned by Gartner 10+ times in their research in last 12 months.

• Seed
• 29 employees
• Founded 2023

Magnitude provides the world's first autonomous AI workforce to empower TPRM teams, built to defend against Mythos-scale attacks. Its AI risk analysts continuously assess vendors, products, and govern AI agents across your entire supply chain - from direct relationships to Nth-party dependencies - delivering high-confidence risk decisions and remediations using enterprise-specific reasoning that improves over time. Because autonomous offense now operates at machine scale, Magnitude replaces the entire static TPRM model with an autonomous governance and defense system for all external dependencies.

• Seed
• 27 employees
• Founded 2024

Seezo automates security design reviews before code is written, eliminating the manual bottleneck that prevents threat modeling from scaling. Built for AI-assisted development, it helps security governance keep pace with the speed of the AI-SDLC. Seezo ingests existing design artifacts, PRDs, Jira epics, Confluence pages, and Google Docs, to generate data flow diagrams, threat models, and security requirements mapped to trust boundaries, assets, and data flows. Findings flow directly into Jira, Slack, and Google Docs comments. Built API-first, Seezo integrates with upstream and downstream SDLC systems without changing existing workflows. Every security requirement maps to internal standards and compliance controls with traceable decision trees, triggered rules, and source inputs, making outputs reviewable, auditable, and defensible. No black-box reasoning. Coverage scales to every feature change, not just high-risk ones. SOC 2 audited and ISO 27001 certified.Built by former security leaders from Razorpay and Synopsys, security teams use Seezo to move from selective spot checks to 100% design-stage coverage and make confident security decisions at scale.

• Seed
• 23 employees
• Founded 2023

AIBound is the Control Plane for High-Risk AI.We help enterprise security teams detect Shadow AI, map the identities and sensitive systems behind it, score risk from A–F, and prevent High-Risk AI before it exposes data or creates compliance risk.As AI adoption spreads across every department, most organizations do not have a clear view of which AI tools, assistants, agents, apps, extensions, and MCP servers are already in use — or what those tools can access.AIBound gives security, risk, privacy, and compliance teams the visibility and control needed to secure AI adoption across browser, endpoint, network, and cloud environments.Our platform helps teams:Discover Shadow AI across the organizationMap Agentic Identities and connected systemsIdentify sensitive data exposureScore AI risk from A–FDetect unsafe app usage and policy violationsPrevent High-Risk AI in real timeSupport EU AI Act and NIST AI RMF readinessBuilt by security practitioners, for security practitioners, AIBound helps enterprises move beyond Shadow AI discovery and into real-time High-Risk AI prevention.Book a 30-minute demo and we'll map the Shadow and High Risk AI already inside your business in less than 24 hours

• Seed
• 23 employees
• Founded 2025

Identity governance has been called solved many times. Every IT team is still doing most of it by hand.Iden is complete identity governance that covers all of the apps that your business runs on. Purpose-built for growing teams who who don't want enterprise bloat or another manual ticket.Iden automates the full identity lifecycle and JML workflows. Birthright access on day one, self-serve and JIT tickets, access reviews that produce audit-ready evidence and offboarding that finishes the moment someone exits. It covers every app in your stack - SaaS, internal or legacy - including the ones without SCIM or API support, which is where every other tool stops. It governs human and non-human identities in one place, including service accounts and AI agents.Iden runs alongside Okta, Entra or Google Workspace. It deploys in days, needs no dedicated IAM admin, and starts at $7.50 per user per month.We also build Motif for enterprises already running a legacy IGA. Motif extends what you have already bought to the systems it was never able to reach.Published as an open-source project, we also maintain the SCIM Tax Index at scimtax.org, an open dataset of about 300 SaaS vendors and which of them gate automated user provisioning behind enterprise plans.Founded in 2024. Built across San Francisco, Los Angeles, Barcelona and Bangalore.Backed by Accel.

• Seed
• 22 employees
• Founded 2024