Prelude

Prelude

Continuous security testing platform validating defenses

Overview

Prelude Security offers a continuous security testing platform that validates and hardens defenses by running lightweight, RAM-resident probes on production endpoints to safely emulate attacker behavior. Its flagship Prelude Detect continuously tests production machines at scale to verify that security configurations are correct and defenses respond to current threats such as CVEs and advisories. The platform provides real-time security assessments and attack simulations without fear-based marketing, focusing on transparency. Prelude differentiates itself with production-level validation via ephemeral probes and integrations, like with CrowdStrike Falcon, to create a self-optimizing security loop; its goal is to keep customers' security posture accurate and up-to-date against the latest threats.

About Prelude

Simplify's Rating
Why Prelude is rated
C+
Rated C on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Enterprise Software

Cybersecurity

Company Size

N/A

Company Stage

N/A

Total Funding

N/A

Headquarters

Seattle, Washington

Founded

N/A

Simplify Jobs

Simplify's Take

What believers are saying

  • Raised $16M from Brightmind in 2026 to commercialize runtime memory protection.
  • Hired Josha Stella from Trellix as VP Cloud Security to innovate cloud features.
  • Lemonade selected Prelude Detect to validate CrowdStrike defenses in production.

What critics are saying

  • CrowdStrike's 2025 roadmap enhancements outpace Prelude's integration, eroding lock-in.
  • Cybereason's v24.1 MalOp protection diverts Prelude's $16M memory tech funds.
  • Mandiant's Q1 2026 service captures Prelude's mid-market with Google scale.

What makes Prelude unique

  • Prelude Detect deploys RAM-based Probes for continuous threat testing in production.
  • Derived from MITRE's CALDERA, Prelude emulates adversaries against latest CVEs.
  • Agentless integrations aggregate data from CrowdStrike and map to MITRE ATT&CK.

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Benefits

Health Insurance

Flexible PTO

Home Office Stipend

Company News

intelligence360
Oct 17th, 2025
Prelude Security Secures $16M Investment

Prelude Security announced an additional $16M investment led by Brightmind Partners, with Sequoia Capital and Insight Partners also participating, bringing total funding to $45M. The funds will be used to commercialize runtime memory protection technology, which detects and stops malicious code at execution, and to expand platform support. This approach addresses the challenge of in-memory cyberattacks that evade traditional detection methods.

FinSMEs
Sep 25th, 2025
Prelude Security Raises Additional $16M in Funding

Prelude Security, a NYC-based provider of an endpoint protection platform, raised additional $16M in funding.

Business Wire
Sep 25th, 2025
Prelude Security Secures $16M Investment

Prelude Security has announced an additional $16 million investment led by Brightmind Partners, with participation from Sequoia Capital and Insight Partners, bringing its total funding to $45 million. The funds will be used to commercialize their runtime memory protection technology, which detects and stops malicious code during execution, and to expand platform support and customer deployment.

Business Wire
May 23rd, 2024
Prelude Security Announces Josha Stella As Vice President Of Cloud Security

BOSTON--(BUSINESS WIRE)--Prelude Security, the company pioneering threat exposure management that enables customers to preempt cyberattacks, today announced Josha Stella as the company’s Vice President of Cloud Security. Boasting over 25 years of distributed systems expertise in the technology and cloud sector, Stella will guide the innovation and development of cloud security capabilities for Prelude as they look to create further separation as the most complete threat management solution in the world. “We are very excited to bring Josha on board,” said Spencer Thompson, Chief Executive Officer at Prelude. “His background building customer-focused cloud security products is evident from his track record of product adoption at startups and global enterprises. Prelude, and our customers, are already feeling his impact in the areas of innovation and product delivery velocity.”. Stella joins Prelude from Trellix, a global leader in extended detection and response, where he served as Chief Architect

Business Wire
May 23rd, 2024
Prelude Security Announces Josha Stella as Vice President of Cloud Security

Stella joins Prelude from Trellix, a global leader in extended detection and response, where he served as Chief Architect.

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