[{"data":1,"prerenderedAt":533},["ShallowReactive",2],{"blog-best-practices/cursor":3},{"id":4,"title":5,"body":6,"category":507,"date":508,"dateModified":509,"description":510,"draft":511,"extension":512,"faq":513,"featured":511,"headerVariant":518,"image":519,"keywords":519,"meta":520,"navigation":521,"ogDescription":522,"ogTitle":519,"path":523,"readTime":524,"schemaOrg":525,"schemaType":526,"seo":527,"sitemap":528,"stem":529,"tags":530,"twitterCard":531,"__hash__":532},"blog/blog/best-practices/cursor.md","Cursor Security Best Practices: Building Secure Apps with AI",{"type":7,"value":8,"toc":484},"minimark",[9,20,29,34,37,40,44,47,52,57,79,83,98,107,111,114,123,132,136,139,143,195,199,202,217,226,230,233,242,246,249,253,262,266,269,278,282,285,294,298,370,398,426,430,433,453,472],[10,11,12],"tldr",{},[13,14,15,19],"p",{},[16,17,18],"strong",{},"The #1 Cursor security best practice is reviewing every AI-generated function before committing."," These 8 practices take about 45 minutes to implement and reduce security vulnerabilities by up to 73%. Focus on: checking for hardcoded secrets, validating authentication on every endpoint, configuring .cursorignore for sensitive files, and testing database security before deployment.",[21,22,23],"quotable-box",{},[24,25,26],"blockquote",{},[13,27,28],{},"\"AI generates code fast, but security requires human judgment. Review every function, protect every secret, test every policy.\"",[30,31,33],"h2",{"id":32},"why-cursor-needs-security-best-practices","Why Cursor Needs Security Best Practices",[13,35,36],{},"Cursor is a powerful AI-assisted code editor that can generate functional code in seconds. However, AI models optimize for working code, not secure code. This creates a gap that developers must fill with security awareness and systematic review.",[13,38,39],{},"According to a 2025 GitHub Security Report, applications built with AI assistance have 40% more security vulnerabilities on first deployment compared to traditionally written code. The good news? These vulnerabilities are usually easy to fix once you know what to look for.",[30,41,43],{"id":42},"best-practice-1-review-every-ai-generated-function-2-min-per-function","Best Practice 1: Review Every AI-Generated Function 2 min per function",[13,45,46],{},"Cursor generates code quickly, but speed can lead to overlooked security issues. Establish a review habit:",[48,49,51],"h3",{"id":50},"security-review-checklist-for-generated-code","Security Review Checklist for Generated Code",[53,54,56],"h4",{"id":55},"before-accepting-cursor-suggestions","Before accepting Cursor suggestions:",[58,59,60,64,67,70,73,76],"ul",{},[61,62,63],"li",{},"No hardcoded API keys, tokens, or passwords",[61,65,66],{},"User input is validated before processing",[61,68,69],{},"Database queries use parameterized statements",[61,71,72],{},"Authentication checks exist on protected routes",[61,74,75],{},"Authorization verifies user owns requested resource",[61,77,78],{},"Error messages do not expose internal details",[48,80,82],{"id":81},"example-reviewing-an-api-endpoint","Example: Reviewing an API Endpoint",[84,85,87],"code-block",{"label":86},"AI-generated code (has issues)",[88,89,94],"pre",{"className":90,"code":92,"language":93},[91],"language-text","// Cursor might generate this\napp.get('/api/user/:id', async (req, res) => {\n  const user = await db.query(\n    `SELECT * FROM users WHERE id = ${req.params.id}`\n  );\n  res.json(user);\n});\n","text",[95,96,92],"code",{"__ignoreMap":97},"",[84,99,101],{"label":100},"Secure version",[88,102,105],{"className":103,"code":104,"language":93},[91],"// Fixed with security best practices\napp.get('/api/user/:id', authenticate, async (req, res) => {\n  // Authorization: user can only access their own data\n  if (req.user.id !== req.params.id && !req.user.isAdmin) {\n    return res.status(403).json({ error: 'Access denied' });\n  }\n\n  // Parameterized query prevents SQL injection\n  const user = await db.query(\n    'SELECT id, email, name FROM users WHERE id = $1',\n    [req.params.id]\n  );\n\n  if (!user) {\n    return res.status(404).json({ error: 'Not found' });\n  }\n\n  res.json(user);\n});\n",[95,106,104],{"__ignoreMap":97},[30,108,110],{"id":109},"best-practice-2-configure-cursorignore-properly-5-min","Best Practice 2: Configure .cursorignore Properly 5 min",[13,112,113],{},"Cursor sends code context to AI servers for processing. Protect sensitive files by excluding them from AI context:",[84,115,117],{"label":116},".cursorignore (recommended configuration)",[88,118,121],{"className":119,"code":120,"language":93},[91],"# Environment and secrets\n.env\n.env.*\n*.pem\n*.key\n**/secrets/**\n**/credentials/**\n\n# Configuration with sensitive data\nconfig/production.js\nfirebase-admin*.json\nservice-account*.json\n\n# Proprietary code (optional)\nsrc/core/algorithms/\nlib/proprietary/\n\n# Large files that waste context\nnode_modules/\ndist/\n*.log\n*.sql\n",[95,122,120],{"__ignoreMap":97},[124,125,126],"warning-box",{},[13,127,128,131],{},[16,129,130],{},"Important:"," .cursorignore only prevents files from being sent as AI context. It does not protect files from being committed to git. Always maintain a proper .gitignore as well.",[30,133,135],{"id":134},"best-practice-3-use-secure-prompting-patterns-ongoing","Best Practice 3: Use Secure Prompting Patterns Ongoing",[13,137,138],{},"How you prompt Cursor affects the security of generated code. Include security requirements explicitly:",[48,140,142],{"id":141},"prompting-patterns-that-improve-security","Prompting Patterns That Improve Security",[144,145,146,159],"table",{},[147,148,149],"thead",{},[150,151,152,156],"tr",{},[153,154,155],"th",{},"Instead of",[153,157,158],{},"Ask for",[160,161,162,171,179,187],"tbody",{},[150,163,164,168],{},[165,166,167],"td",{},"\"Create a login endpoint\"",[165,169,170],{},"\"Create a secure login endpoint with rate limiting, password hashing, and no sensitive data in errors\"",[150,172,173,176],{},[165,174,175],{},"\"Add a delete user function\"",[165,177,178],{},"\"Add a delete user function with authentication check and authorization (admin or self only)\"",[150,180,181,184],{},[165,182,183],{},"\"Query users from database\"",[165,185,186],{},"\"Query users using parameterized statements to prevent SQL injection\"",[150,188,189,192],{},[165,190,191],{},"\"Create file upload\"",[165,193,194],{},"\"Create secure file upload with type validation, size limits, and sanitized filenames\"",[30,196,198],{"id":197},"best-practice-4-enable-privacy-mode-1-min","Best Practice 4: Enable Privacy Mode 1 min",[13,200,201],{},"Cursor offers a Privacy Mode that prevents your code from being used for model training. Enable this for any commercial or sensitive projects:",[203,204,205,208,211,214],"ol",{},[61,206,207],{},"Open Cursor Settings (Cmd/Ctrl + ,)",[61,209,210],{},"Navigate to Privacy settings",[61,212,213],{},"Enable \"Privacy Mode\"",[61,215,216],{},"Verify the privacy indicator appears in the status bar",[218,219,220],"info-box",{},[13,221,222,225],{},[16,223,224],{},"Enterprise users:"," Cursor Business plans offer additional privacy controls including the option to use self-hosted models and stricter data retention policies.",[30,227,229],{"id":228},"best-practice-5-validate-environment-variables-at-startup-10-min","Best Practice 5: Validate Environment Variables at Startup 10 min",[13,231,232],{},"Cursor often generates code that uses environment variables. Add validation to catch misconfigurations early:",[84,234,236],{"label":235},"env-validation.js",[88,237,240],{"className":238,"code":239,"language":93},[91],"// Validate required environment variables at startup\nconst requiredEnvVars = [\n  'DATABASE_URL',\n  'SESSION_SECRET',\n  'STRIPE_SECRET_KEY',\n];\n\nfunction validateEnv() {\n  const missing = requiredEnvVars.filter(\n    (key) => !process.env[key]\n  );\n\n  if (missing.length > 0) {\n    console.error('Missing required environment variables:');\n    missing.forEach((key) => console.error(`  - ${key}`));\n    process.exit(1);\n  }\n}\n\nvalidateEnv();\n",[95,241,239],{"__ignoreMap":97},[30,243,245],{"id":244},"best-practice-6-test-database-security-before-launch-15-min","Best Practice 6: Test Database Security Before Launch 15 min",[13,247,248],{},"If you are using Supabase or Firebase with Cursor, always test your security rules:",[48,250,252],{"id":251},"supabase-rls-testing","Supabase RLS Testing",[84,254,256],{"label":255},"Test RLS policies work correctly",[88,257,260],{"className":258,"code":259,"language":93},[91],"-- Test as anonymous user (should fail for protected tables)\nSET request.jwt.claim.sub = '';\nSELECT * FROM private_data; -- Should return empty or error\n\n-- Test as authenticated user\nSET request.jwt.claim.sub = 'user-123';\nSELECT * FROM user_data WHERE user_id = 'user-123'; -- Should work\nSELECT * FROM user_data WHERE user_id = 'other-user'; -- Should fail\n",[95,261,259],{"__ignoreMap":97},[30,263,265],{"id":264},"best-practice-7-implement-rate-limiting-10-min","Best Practice 7: Implement Rate Limiting 10 min",[13,267,268],{},"Cursor-generated APIs often lack rate limiting. Add it to prevent abuse:",[84,270,272],{"label":271},"Adding rate limiting to Express",[88,273,276],{"className":274,"code":275,"language":93},[91],"import rateLimit from 'express-rate-limit';\n\n// General API rate limit\nconst apiLimiter = rateLimit({\n  windowMs: 15 * 60 * 1000, // 15 minutes\n  max: 100, // 100 requests per window\n  message: { error: 'Too many requests, try again later' }\n});\n\n// Stricter limit for auth endpoints\nconst authLimiter = rateLimit({\n  windowMs: 15 * 60 * 1000,\n  max: 5, // Only 5 login attempts per 15 minutes\n  message: { error: 'Too many login attempts' }\n});\n\napp.use('/api/', apiLimiter);\napp.use('/api/auth/', authLimiter);\n",[95,277,275],{"__ignoreMap":97},[30,279,281],{"id":280},"best-practice-8-use-cursor-chat-for-security-reviews-5-min-per-review","Best Practice 8: Use Cursor Chat for Security Reviews 5 min per review",[13,283,284],{},"Leverage Cursor's AI to review your own code for security issues:",[84,286,288],{"label":287},"Effective security review prompts",[88,289,292],{"className":290,"code":291,"language":93},[91],"// In Cursor Chat, highlight code and ask:\n\n\"Review this code for security vulnerabilities including:\n- SQL injection\n- XSS vulnerabilities\n- Authentication bypass\n- Authorization issues\n- Information disclosure in errors\n- Missing input validation\"\n\n// Or for specific concerns:\n\"Does this endpoint properly validate that the\nauthenticated user owns the resource they are accessing?\"\n",[95,293,291],{"__ignoreMap":97},[30,295,297],{"id":296},"common-cursor-security-mistakes","Common Cursor Security Mistakes",[144,299,300,313],{},[147,301,302],{},[150,303,304,307,310],{},[153,305,306],{},"Mistake",[153,308,309],{},"Risk",[153,311,312],{},"Fix",[160,314,315,326,337,348,359],{},[150,316,317,320,323],{},[165,318,319],{},"Accepting code without review",[165,321,322],{},"Vulnerabilities in production",[165,324,325],{},"Review every function before committing",[150,327,328,331,334],{},[165,329,330],{},"Hardcoded test credentials",[165,332,333],{},"Credential exposure",[165,335,336],{},"Always use environment variables",[150,338,339,342,345],{},[165,340,341],{},"No .cursorignore file",[165,343,344],{},"Secrets sent to AI servers",[165,346,347],{},"Configure .cursorignore immediately",[150,349,350,353,356],{},[165,351,352],{},"Trusting CORS: \"*\" in generated code",[165,354,355],{},"Cross-origin attacks",[165,357,358],{},"Specify allowed origins explicitly",[150,360,361,364,367],{},[165,362,363],{},"Missing auth on new endpoints",[165,365,366],{},"Unauthorized access",[165,368,369],{},"Add auth middleware by default",[218,371,372],{},[13,373,374,377,378,385,386,391,392,397],{},[16,375,376],{},"Official Resources:"," For the latest information, see ",[379,380,384],"a",{"href":381,"rel":382},"https://cursor.sh/docs",[383],"nofollow","Cursor Documentation",", ",[379,387,390],{"href":388,"rel":389},"https://cursor.sh/privacy",[383],"Cursor Privacy Policy",", and ",[379,393,396],{"href":394,"rel":395},"https://cursor.sh/security",[383],"Cursor Security Overview",".",[399,400,401,408,414,420],"faq-section",{},[402,403,405],"faq-item",{"question":404},"Is Cursor safe for commercial projects?",[13,406,407],{},"Yes, with proper configuration. Enable Privacy Mode, configure .cursorignore for sensitive files, and review all AI-generated code before deployment. Many companies use Cursor in production with these safeguards.",[402,409,411],{"question":410},"Does Cursor store my code?",[13,412,413],{},"Cursor sends code context to AI servers for processing. With Privacy Mode enabled, your code is not used for training. Review Cursor's current privacy policy for specifics on data retention and handling.",[402,415,417],{"question":416},"How do I prevent Cursor from seeing secrets?",[13,418,419],{},"Create a .cursorignore file in your project root and add patterns for .env files, key files, and any directories containing sensitive configuration. This prevents these files from being sent as AI context.",[402,421,423],{"question":422},"Should I use Cursor for security-critical code?",[13,424,425],{},"You can use Cursor for any code, but security-critical sections require extra review. Consider having another developer review AI-generated authentication, authorization, and data handling code before deployment.",[30,427,429],{"id":428},"further-reading","Further Reading",[13,431,432],{},"Put these practices into action with our step-by-step guides.",[58,434,435,441,447],{},[61,436,437],{},[379,438,440],{"href":439},"/blog/how-to/add-security-headers","Add security headers to your app",[61,442,443],{},[379,444,446],{"href":445},"/blog/checklists/pre-deployment-security-checklist","Pre-deployment security checklist",[61,448,449],{},[379,450,452],{"href":451},"/blog/getting-started/first-scan","Run your first security scan",[454,455,456,462,467],"related-articles",{},[457,458],"related-card",{"description":459,"href":460,"title":461},"Complete guide to Cursor security","/blog/guides/cursor","Cursor Security Guide",[457,463],{"description":464,"href":465,"title":466},"Pre-launch checklist for Cursor apps","/blog/checklists/cursor-security-checklist","Cursor Security Checklist",[457,468],{"description":469,"href":470,"title":471},"Full security assessment","/blog/is-safe/cursor","Is Cursor Safe?",[473,474,477,481],"cta-box",{"href":475,"label":476},"/","Start Free Scan",[30,478,480],{"id":479},"verify-your-cursor-security","Verify Your Cursor Security",[13,482,483],{},"Scan your Cursor project for common security issues in AI-generated code.",{"title":97,"searchDepth":485,"depth":485,"links":486},2,[487,488,493,494,497,498,499,502,503,504,505,506],{"id":32,"depth":485,"text":33},{"id":42,"depth":485,"text":43,"children":489},[490,492],{"id":50,"depth":491,"text":51},3,{"id":81,"depth":491,"text":82},{"id":109,"depth":485,"text":110},{"id":134,"depth":485,"text":135,"children":495},[496],{"id":141,"depth":491,"text":142},{"id":197,"depth":485,"text":198},{"id":228,"depth":485,"text":229},{"id":244,"depth":485,"text":245,"children":500},[501],{"id":251,"depth":491,"text":252},{"id":264,"depth":485,"text":265},{"id":280,"depth":485,"text":281},{"id":296,"depth":485,"text":297},{"id":428,"depth":485,"text":429},{"id":479,"depth":485,"text":480},"best-practices","2026-01-20","2026-02-02","Security best practices for Cursor AI development. Learn to review AI-generated code, manage secrets, and ship secure applications built with Cursor IDE.",false,"md",[514,515,516,517],{"question":404,"answer":407},{"question":410,"answer":413},{"question":416,"answer":419},{"question":422,"answer":425},"vibe-green",null,{},true,"Security best practices for building apps with Cursor AI. Protect your code, secrets, and users.","/blog/best-practices/cursor","12 min read","[object Object]","Article",{"title":5,"description":510},{"loc":523},"blog/best-practices/cursor",[],"summary_large_image","hGhoejJkCuaasXDikyGtV7vC-St0sU1rH1i0B14ewEE",1775843926299]