{"id":50007,"date":"2026-11-04T17:00:14","date_gmt":"2026-11-04T11:30:14","guid":{"rendered":"https:\/\/www.getastra.com\/blog\/?p=50007"},"modified":"2026-11-04T17:00:17","modified_gmt":"2026-11-04T11:30:17","slug":"vibe-coding-prompts","status":"publish","type":"post","link":"https:\/\/www.getastra.com\/blog\/ai-security\/vibe-coding-prompts\/","title":{"rendered":"Vibe Coding Prompts: What Makes Them More Secure"},"content":{"rendered":"\n

Analyzing secure vibe coding prompts is crucial as AI adoption grows. In our vibe coding security risk study<\/a>, Emergent, Replit, Lovable, and Base44 each built a working app from the same vibe coding prompt, and Astra’s autonomous pentest agents confirmed 137 vulnerabilities across the four of them, with the same nine weak points giving out again and again.<\/p>\n\n\n\n

If these tools build what you ask for, the obvious follow-up is what happens when you ask for something different. Section 9 of the report is that different ask: a hardened build prompt rewritten line by line against the findings. <\/p>\n\n\n\n

This post covers how the hardened version differs, which findings the study’s own data traces back to the prompt, and where vibe coding prompts stop helping you achieve secure vibe coding.<\/p>\n\n\n\n

<\/span>What the original prompt asked for<\/span><\/h2>\n\n\n\n

The original prompt was not naive. It named real controls, including bcrypt hashing with a cost factor of at least 12, 15-minute access tokens, and parameterized queries only. When the prompt was that specific, the builds largely held, and SQL injection didn’t appear among the nine shared weak points.<\/p>\n\n\n\n

Other lines stayed general, and those are the ones that gave out. “CORS enabled for mobile clients” says nothing about which origins to allow, and “rate limiting on auth endpoints” names a mechanism without a threshold. The report found that each of the five weak points in all four apps traces to a security requirement missing from the prompt or stated only in general terms. <\/p>\n\n\n\n

The tools read those lines as feature requests and built the feature, which is why the report warns against assuming a platform knows what “secure login” means.<\/p>\n\n\n\n

<\/span>Writing secure vibe coding prompts: What we changed<\/span><\/h2>\n\n\n\n

The rewrite followed one rule, which was to replace every adjective with a number or a named control. Vibe coding prompt engineering here came down to editing. A good vibe coding prompt template<\/a> reads like a spec, and each line names something a tester can check.<\/p>\n\n\n\n

Here are three vibe coding prompt examples, before and after, condensed from the report.<\/p>\n\n\n\n