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Seal Security

Category: AI in Cybersecurity

An AI-powered application security remediation platform that delivers automated, production-ready patches for open-source vulnerabilities across application dependencies, Linux operating systems, and container base images without requiring version upgrades or breaking changes. Seal Security was founded in 2022. The company is led by Itamar Sher. Based in Tel Aviv, Israel. Team size: 35-50. Total funding raised: $20.0M. Latest round: Series A (Jul 2025). Key investors include ["Vertex Ventures Israel","Crew Capital","PayPal Alumni Fund","Cyber Club London","More Investment House","SBI Group","CCL"].

Founded
2022
Headquarters
Tel Aviv, Israel
Team size
35-50
Total funding
$20.0M

Value proposition

Enables security teams to fix open-source vulnerabilities autonomously within minutes/hours using human-vetted, standalone patches—eliminating dependency hell, R&D bottlenecks, and forced upgrades while maintaining version stability and meeting compliance requirements.

Products and solutions

["Seal Apps - Standalone security patches for open-source application dependencies with long-term support","Seal OS - Vulnerability-proof Linux operating system images for containers, VMs, and bare-metal environments","Seal Base Images - Pre-hardened, zero-CVE container base images with continuous updates","AppSec Remediation Agent - AI-powered autonomous vulnerability remediation system"]

Unique value

First company to leverage generative AI/LLMs for automated open-source vulnerability remediation with production-ready patches. Provides standalone, human-vetted patches that fix vulnerabilities in-place without requiring version upgrades, migrations, or breaking changes. Supports 7+ programming languages and multiple Linux distributions. Achieved 72-hour CVE remediation SLA - industry-leading turnaround time.

Target customer

Application security teams, DevOps/DevSecOps engineers, IT security teams at mid-to-large enterprises using open-source software, especially those with compliance requirements (FedRAMP, PCI DSS, DORA, NYDFS)

Industries served

["Cybersecurity","Application Security","Software Supply Chain Security","DevSecOps","Cloud Infrastructure","Financial Services (compliance-focused)","Technology/Software Development"]

Technology advantage

Combines AI-assisted patch generation with human security expert validation to deliver cryptographically signed, sealed packages. Decouples security fixes from feature upgrades, enabling centralized vulnerability management across all CI pipelines. Backports security fixes to existing versions, supporting end-of-life systems and legacy codebases. Platform covers the full stack: application dependencies (Java, Python, JavaScript, C/C++, Go, PHP, C#, Ruby), OS packages, and container images. Achieved SOC 2 Type II, ISO 27001 certifications and CVE Numbering Authority (CNA) status.

How they differentiate

AI-powered automated remediation delivering production-ready, standalone security patches without requiring version upgrades. Provides 95%+ patching capacity for critical/high vulnerabilities through centralized, developer-free remediation with human-vetted patches deployable across entire organization without R&D involvement.

Main competitors

["Snyk","Sonatype","Tidelift"]

Key partnerships

["Wiz - Integration partnership for hardened container base images (Jan 2026)","Vertex Ventures Israel - Lead investor (Seed & Series A)","Crew Capital - Strategic investor","PayPal Alumni Fund - Strategic investor","Key Customers: BigID, PayPal, Kiteworks, CENSYS (with public testimonials)","GitHub, GitLab, Azure DevOps, Docker, Snyk, JFrog - Platform integrations"]

Notable customers

["BigID","PayPal","Kiteworks","CENSYS"]

Major milestones

["February 2024: Emerged from stealth with $7.4M Seed funding led by Vertex Ventures Israel","September 2024: Achieved CVE Numbering Authority (CNA) status from CVE Program","February 2025: Won 2023 CISO Choice Award for Application Security","July 2025: Raised $13M Series A led by Vertex Ventures Israel with participation from More Investments, SBI Group, and CCL","Achieved SOC 2 Type II and ISO 27001 certifications","Published Kiteworks case study on CentOS end-of-life vulnerability remediation","Published React/Next.js CVE-2025-55182 (CVSS 10.0) patch for critical RCE vulnerability"]

Growth metrics

Doubled headcount from 35 to 35-50 employees in past year; 95%+ patching rate for critical/high vulnerabilities; 72-hour CVE remediation SLA

Market positioning

Specialized security-team-led automation platform for open-source vulnerability remediation, targeting enterprises with heavy OSS usage and compliance requirements. Positioned as the automated remediation layer that complements existing SCA tools (detection) with actual patch deployment capabilities.

Geographic focus

North America, Europe, Israel (global with emphasis on cloud-native enterprises)

Patents and IP

No registered patents disclosed as of latest update

About Itamar Sher

Former member of Israel's elite Unit 8200 intelligence unit (5 years), Head of Research at Cymmetria (first employee), worked at PayPal and Curv in cybersecurity roles, freelance vulnerability researcher. Awarded Makor Hayim intelligence corps award for special contribution to a critical project. Speaker at Black Hat USA 2015. Over 9 years of cybersecurity and vulnerability research experience.

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