BestDefense.io
Techstars '25Clearwater, US · Founded 2024 · 14 employees on LinkedIn · 1 known investors
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BestDefense provides automated AI-powered security testing and vulnerability remediation for software deployments. The platform continuously scans code, APIs, and CI/CD pipelines for exploitable vulnerabilities, automatically generates fixes as pull requests, and verifies patches without manual intervention.
Also known as BestDefense · BestDefense.io
Founders & leadership
BestDefense.io was founded in 2024 by Dan Baddeley and Derek Foster.


Investors · 1
How we know: the Techstars portfolio · open dataset · Top 3000 Accelerator Startups (no YC) 2026-08 · Not right? Tell us
Company profile
researched Sep 2026BestDefense.io develops Vortex, a continuous security validation platform that embeds penetration testing and automated remediation into software development workflows. The system maps an application's attack surface — endpoints, APIs, authentication flows and dependencies — on every deploy, attempts live exploit chains (SQL injection, authentication bypass, SSRF, privilege escalation and business-logic flaws) against the running environment, and forwards only findings it has confirmed to be exploitable.
For each confirmed exploit, the platform generates a stack-aware patch delivered as a pull request, ticket or Slack alert, with a CI gate that blocks vulnerable builds until the issue is resolved. It then reruns the original exploit against the patched build to confirm closure and flag regressions. Each closed loop produces a timestamped evidence record mapped to compliance frameworks including SOC 2, ISO 27001, PCI DSS, NIST and CMMC, and audit bundles can be exported as signed PDFs. The company also offers a pre-commit mode that runs AI pentesting locally in the developer's editor via Docker. Techstars lists its activity areas as fully automated penetration testing at global scale with continuous monitoring, CI/CD pipeline tools, globally distributed application, infrastructure and network load testing, honeypots and network monitoring, and an AI-driven CISO copilot.
Founding story
Founder and CEO Dan Baddeley has 12+ years as a Fortune 100 engineering executive leading DevSecOps, SRE and platform teams, and architected petabyte-scale systems for NYSE, NASDAQ and FS-ISAC with solutions deployed at Worldpay, Chase Bank and Google; he founded BestDefense because existing tools could not keep pace with how software is now built. Co-founder and CTO Derek Foster has 14+ years of engineering leadership across fintech, marketing and e-commerce, overseeing global teams of more than 150 developers, with expertise in SRE, full-stack engineering, cybersecurity and solutions architecture, and leads development of the verified fix loop.
Business model
Vortex is sold as a monthly subscription, positioned against per-engagement manual penetration tests (cited at $30,000–$80,000 per engagement) and per-seat or per-repo scanner pricing. The site offers a free trial and demo requests as entry points.
Monthly subscription for the Vortex platform.
Traction
The company reports customer-observed outcomes including 90% fewer findings requiring triage, 85% faster time from discovery to merged verified fix, and 95% of fix pull requests merged without revision, with an end-to-end loop under two hours. Customer testimonials cite passing third-party security assessments, accelerating SOC 2 compliance and a 60% reduction in vulnerability detection time. The Techstars listing places headcount at 11-50.
Latest developments
Advisors listed include Ernie Bio (managing director at ForgePoint Capital and former COO of the Defense Innovation Unit), Andy Feldstein (president of ViaSpectrum), Josh Sturgeon (co-founder of EmberTribe), Dave Shor and Alex Viteri. Distribution agreements are in place with Carahsoft and Bridgepointe Technologies.
▸Full profile — market position, technology, go-to-market, geography, history
Market position
Positions itself in continuous/automated penetration testing and remediation, competing with manual pentest engagements and legacy SAST/scanner tools. Techstars categorizes the company under compliance, cybersecurity, information technology and penetration testing.
The company positions Vortex as a single continuous loop that replaces both periodic manual penetration tests and high-false-positive static scanners: it tests on every commit rather than quarterly, delivers auto-generated code-level fix pull requests rather than guidance or reports, automatically retests to confirm closure without a re-engagement fee, and maintains a continuous compliance audit log instead of point-in-time reports. Coverage spans code, APIs and CI/CD rather than source code only.
Technology
The platform performs graph-native analysis: it models code as a taint graph to guide AI-generated exploits and fixes, then applies graph-theoretical validation to prove that tainted paths from sources to SQL, command-execution and similar sinks are closed. Findings are validated by executing exploits against the real environment rather than by pattern matching, and fixes are re-tested by adversarially rerunning the original exploit. A local mode runs pre-commit AI pentesting on a developer machine using Docker.
Go-to-market
Direct self-service entry via free trial and demo requests on the company site, integrations with developer and cloud tooling (GitHub, GitLab, Bitbucket, Jira, Jenkins, SonarQube, Snyk, Slack, AWS, Azure, GCP), and channel distribution through Carahsoft for U.S. federal, state and local government markets and Bridgepointe Technologies for enterprise procurement and advisory.
Software engineering and security teams that deploy frequently, including companies pursuing third-party security audits and compliance attestations (SOC 2, ISO 27001, PCI DSS, FedRAMP, NIST, CMMC), and enterprise and government buyers reached through channel partners. Named referencing customers include BiteData.io, NCOG, Hyacinth BPO and Kindred Voice.
Geography
Listed locations are Clubhouse Estates, Clearwater, FL and Clearwater, FL, USA; channel partnerships target U.S. federal, state and local government as well as enterprise buyers.
History
The company has participated in accelerator and innovation programs including Techstars, Endless Frontier Labs at NYU Stern, Tampa Bay Wave, Google and NVIDIA innovation initiatives, and the U.S. Department of Defense Sigma/Combine dual-use innovation pipeline. The Techstars job board profile states a founding year of 2019.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Related companies · 2
Companies working in the same space as BestDefense.io.
Timeline · 3
launches, deals, and filingsCompany lists selection into Techstars, Endless Frontier Labs (NYU Stern), Tampa Bay Wave, Google and NVIDIA innovation initiatives, and the U.S. Department of Defense Sigma/Combine program.
Bridgepointe Technologies listed as a channel partner supporting enterprise adoption through strategic advisory and procurement channels.
Carahsoft listed as a distribution and channel partner enabling access to U.S. federal, state and local government markets.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 8
primary sources listed
- BestDefense.iobestdefense.io · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does BestDefense.io do?
- BestDefense.io builds Vortex, a continuous security validation platform that exploits, patches and re-verifies vulnerabilities on every deploy.
- Who founded BestDefense.io?
- BestDefense.io was founded by Dan Baddeley, Derek Foster in 2024.
- Who are BestDefense.io's investors?
- BestDefense.io's investors include Techstars.
- Where is BestDefense.io headquartered?
- BestDefense.io is headquartered in Clearwater, US.



