Penetration testing, source code review, SAST automation, and continuous security for modern engineering teams. Results in days, not weeks.
Get a complimentary security assessment of your domain. We run automated reconnaissance and deliver a 1-page report with real findings — no strings attached.
We'll assess your external attack surface and send you a report.
End-to-end offensive security — from automated scanning to manual exploitation, incident response, and source-level code review.
Web, API, mobile, backend, frontend, and cloud penetration testing. Manual exploitation with Burp Suite, custom tooling, and validated PoCs.
AWS, GCP, and Azure security assessments. AI/ML model testing, LLM prompt injection, and cloud infrastructure misconfiguration audits.
Deep manual review of your codebase. Auth flow mapping, input-to-sink tracing, IDOR detection, and business logic analysis.
Custom Semgrep rules tailored to your stack. CI/CD integration that catches vulnerabilities in pull requests before they ship.
AI-powered Security Operations Center setup. Automated alert triage, threat correlation, and intelligent incident prioritization for your team.
Digital forensics and incident response. Breach investigation, evidence collection, root cause analysis, and containment strategy.
Proactive threat hunting across your environment. Detect active or past compromise, lateral movement, and persistent access.
Security configuration audits for servers, cloud resources, firewalls, and network devices against CIS benchmarks and best practices.
Stop vulnerabilities at the source. We build custom SAST rule sets for your exact stack and integrate them into your CI/CD pipeline — so your team catches security issues in every pull request.
See PackagesNot generic rulesets. We write Semgrep rules that match your frameworks, libraries, and coding patterns. Django, Spring, Express, Rails, FastAPI, Go — all covered.
GitHub Actions, GitLab CI, or Bitbucket Pipelines. PR blocking on high/critical findings. Inline comments on vulnerable lines. Zero developer friction.
We don't dump 500 alerts on your team. We triage the initial scan, classify false positives, and hand you a clean starting point with prioritized real findings.
SQLi, XSS, SSRF, IDOR, auth bypass, insecure deserialization, path traversal, and more. Rules mapped to OWASP categories with fix guidance.
Choose the engagement model that fits. All plans include validated findings with proof-of-concept and remediation guidance.
Scoped engagement for a specific application, network, API, or cloud environment.
Continuous security testing and monitoring.
Deep manual review of your codebase for security flaws.
Single repo, single language. Get security guardrails fast.
Up to 3 repos, 2 languages. Full OWASP Top 10 coverage.
Up to 10 repos, any languages. Quarterly updates included.
Real results from real engagements. Names anonymized to protect client confidentiality.
"GreyCore found 3 critical auth bypass vulnerabilities that our previous vendor missed completely. Their manual testing depth is on another level."
"The Semgrep package paid for itself in the first week. We caught an IDOR in a PR review that would have exposed customer PII in production."
"Fast, thorough, and the reports are actually useful — not generic scanner output. Remediation guidance was specific enough for our devs to fix same-day."
Every engagement follows a structured methodology. No black boxes — you get full visibility into what we're testing and what we find.
Define targets, constraints, and rules of engagement. Automated asset discovery, subdomain enumeration, and technology fingerprinting.
Deep enumeration of live services, endpoints, and attack surface. Automated vulnerability scanning with Nessus, Acunetix, and custom nuclei templates.
Manual testing for business logic flaws, auth bypass, IDORs, and chained vulnerabilities that scanners miss. Proof-of-concept for every finding.
Executive summary for leadership. Technical report with CVSS scores, reproduction steps, and code-level fix recommendations for your engineering team.
Our hackers are ranked on the world's top bug bounty platforms — finding real vulnerabilities in production systems every day.
Certified by OffSec, INE, and industry-recognized security bodies:
Technical deep dives on vulnerabilities, tooling, and offensive security methodology.
Most frameworks handle SQLi and XSS. But IDOR? That's still on your developers. Here are the patterns we see in nearly every engagement.
Generic SAST rulesets find generic bugs. Here's how custom rules tuned to your stack catch what automated scanners can't.
From JWT none-algorithm to OAuth redirect manipulation — the authentication tests that should be in every pentest scope.
Tell us about your application, infrastructure, or codebase. We'll scope the engagement and get back to you within 24 hours.
US-incorporated entity. NDAs and MSAs available. SOC 2 and compliance-friendly reporting.