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Your Supabase Storage bucket is public - signed URLs will not save you

Problem You are generating private B2B images with Sharp in a Next.js API route and storing the derivatives in Supabase Storage.

  • Supabase Storage buckets can be public, exposing sensitive images.
  • Turn off public flag to require authentication for access.
  • Use signed URLs with expiration to safeguard against unauthorized access.

Hello World!

Hello everyone! 👋 Happy to be joining the DEV community. I’m a Computer Engineering student based in Italy. My main focus is Cybersecurity, but I strongly believe you have to know how to build a…

Security news weekly round-up - 28th August 2026

When you go online, staying safe should be your priority. You watch the links that you click, you be careful of the apps that you download and where you download them from, and so on like that.

  • Users warned to be cautious with links, downloads, and personal info online
  • AI used to piece together private data, AI brands impersonated to spread malware
  • Android malware ToxicPanda blocks Google Play, targets financial and crypto apps

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