WINDSURF VS CURSOR SECURITY COMPARISON (2026) | VIBEEVAL

The bottom line

Neither Windsurf nor Cursor is inherently more secure. Both send your code to external servers, both generate code with similar vulnerability patterns, and both require you to review generated code for security issues. The real risk is in the code they produce, not the IDE itself.

Data Privacy

Code Generation Security

Extension & Plugin Security

Enterprise Security

Security risks unique to each

Cursor-specific risks

• Multi-model routing: Code may be sent to OpenAI, Anthropic, or Google depending on settings. More vendors = more attack surface.
• Composer agent: Can create/modify files and run terminal commands autonomously. A compromised prompt could execute arbitrary code.
• .cursorrules injection: Malicious repos can include .cursorrules files that alter code generation behavior when cloned.

Windsurf-specific risks

• Cascade persistence: Cascade maintains context across sessions. A prompt injection in one session could affect future sessions.
• Codeium telemetry: Windsurf collects usage data for model improvement. Review their data processing agreement for your compliance needs.
• Supercomplete feature: Proactively suggests code changes that may introduce security issues if accepted without review.

How to secure code from either IDE

Run automated security scans on every commit, regardless of which IDE generated the code

Use .cursorrules or .windsurfrules to enforce security patterns (e.g., “always use parameterized queries”)

Review all generated authentication and authorization code manually before deployment

Check that suggested npm packages actually exist and are maintained

Enable Supabase RLS or Firebase security rules – both IDEs skip this by default

Related Comparisons

Is Cursor Safe?

Full safety analysis of Cursor AI

Is Windsurf Safe?

Full safety analysis of Windsurf IDE

How to Secure Cursor

Step-by-step guide to securing Cursor projects

How to Secure Windsurf

Step-by-step guide to securing Windsurf projects

Secure code from any AI IDE

VibeEval scans the output of Cursor, Windsurf, and every other AI coding tool. It does not matter which IDE you use – what matters is catching vulnerabilities before deployment.