Fast rules, now inside the agent. Your business rules are the difference.
Semgrep is fast, its cross-file taint analysis follows data between files, and Semgrep Guardian scans every file an AI agent writes in Claude Code, Cursor and Windsurf. CybeDefend works at the same moment and also checks the change against the business rules your team wrote.
What Semgrep does well
Extremely fast SAST with cross-file taint analysis, a large rule library plus Pro rules maintained by its research team, approachable custom rule authoring, Supply Chain with reachability, secrets detection, AI detection of IDOR and broken authorization, and Guardian, which scans every file an AI agent writes and blocks malicious dependencies.
But:
Semgrep checks code against security rules, its own or ones you write in its syntax; nothing it announces checks a change against the business rules your team wrote. Its AI detection of logic flaws runs as credit-based scans, not on every agent write. No container image scanning, and AI autofix is still in public beta.
CybeDefend vs Semgrep
| Feature | CybeDefend | Semgrep |
|---|---|---|
Detection× 10 | ||
| Agent-time scanning | ✓ | ✓ |
| SAST | ✓ | ✓ |
| SCA | ✓ | ✓ |
| IaC scanning | ✓ | ~ |
| Container scanning | ✓ | ✗ |
| Secret detection | ✓ | ✓ |
| Business logic flaws | ✓ | ✓ |
| Reachability analysis | ✓ | ✓ |
| AI-BOM: AI component inventory (EU AI Act + NIST AI RMF) | ✓ | ~ |
| Prompt injection & LLM-misuse scanner (OWASP LLM Top 10) | ✓ | ✓ |
AI & Agent× 7 | ||
| Agent-time (Claude Code, Cursor, Windsurf…) | ✓ | ✓ |
| IDE security copilot | ✓ | ~ |
| AI-generated verified patches | ✓ | ~ |
| Auto-fix → ready-to-merge PR | ✓ | ~ |
| Security Code Knowledge Graph | ✓ | ✗ |
| VibeDefend: security rules distributed to AI coding agents | ✓ | ✗ |
| Coding agent sandbox policy (allow/deny/warn before every write) | ✓ | ~ |
Operations× 5 | ||
| CI/CD pipeline gate | ✓ | ✓ |
| Low false-positive rate | ✓ | ✓ |
| Setup under 5 minutes | ✓ | ✓ |
| CybeRisk Score: 0-100 score + AI-generated weekly Top 10 brief | ✓ | ✗ |
| EU/US sovereign deployment | ✓ | ✗ |
✓ = Yes - ✗ = No - ~ = Partial
Rules and graphs
Semgrep's Pro engine follows tainted data across files, and its Pro rules come with sources and sinks already defined, while a custom taint rule still asks you to declare them. CybeDefend builds a knowledge graph of your codebase, with its data flows, owners and business rules, and applies checks against that model rather than against a pattern alone.
Shared rules vs rules mined from your code
Semgrep's rule library, community and Pro, is one of the best in the industry, and you can write your own rules in its syntax. CybeDefend adds rules mined from your own codebase: patterns specific to your auth system, your data model and your business logic, the kind a shared rule library cannot know about.
Same moment, different rule books
Semgrep Guardian hooks into Claude Code, Cursor and Windsurf, scans each file the agent writes with Code, Supply Chain and Secrets, and prompts the agent to regenerate until the scan is clean. CybeDefend works at the same moment. The difference is the rule book: vulnerability rules on one side, vulnerability rules plus your business rules on the other.
Agent writes code
CybeDefend scans
PR opens clean
Both check the agent's code as it is written. Semgrep asks whether it matches a security rule; CybeDefend also asks whether it breaks a rule of your business.
Pricing at a glance
Transparent pricing is a core CybeDefend value. See how we compare.
CybeDefend
- Developer€204/year
- Team · 5-10 users€2,148/year - €3,348/year
- Scale · 15-25 users€6,588/year - €8,988/year
- EnterpriseContact sales
Semgrep
- Free Edition · 10 usersFree
- Teams · 10 users$3,600/year
- EnterpriseContact sales
Competitor prices: the lowest annual list price published for the plan shown, taken from the vendor's website or its own marketplace listing and checked in September 2026. Always verify before purchasing.
Frequently Asked Questions
Does CybeDefend support custom rules like Semgrep?
Yes. CybeDefend lets you write custom rules on top of the rules it mines from your code. Semgrep rules describe code patterns and taint flows in Semgrep's syntax; CybeDefend rules can also draw on the knowledge graph, such as data flow and ownership, and on your business rules.
Can CybeDefend be used alongside Semgrep?
Yes. Semgrep for its rule library and Supply Chain, CybeDefend for business rules and agent-time checks, is a valid setup. Both can sit in the agent loop, so decide which one blocks and which one only reports, to avoid asking the agent twice.
How does false-positive rate compare?
It depends on the rules. Semgrep's own docs note that community rules can produce more false positives than its Pro rules, and Semgrep Assistant uses AI to flag likely false positives. CybeDefend adds reachability and business context from its knowledge graph and surfaces findings where the vulnerable path is actually exercised.
Install VibeDefend in 5 seconds.
One command wires every coding agent on your machine to CybeDefend: your business rules, your compliance frameworks, and guards that block destructive calls before they fire.
npx -y @cybedefend/vibedefend@latest install
Claude Code
Cursor
OpenAI Codex
Windsurf
VS Code Copilot