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Denys Zaichenko

A senior full-stack developer specialising in multi-tenant SaaS apps and AI agents.

Portugal Joined on Oct 26, 2026 https://madsalt.tech/

Denys Zaichenko for Denys

Nov 9

Supabase leaked password protection: what it blocks and what it does not

#backend #saas #security

3 min read

Denys Zaichenko for Denys

Nov 6

Supabase raw_user_meta_data: how a sign-up became Owner

#authentication #backend #database #security

3 min read

Denys Zaichenko for Denys

Nov 4

Is Supabase secure? What it covers and what you have to cover

4 min read

Denys Zaichenko for Denys

Nov 2

Supabase anon key vs service role key: what each one opens

#database #postgres #security

4 min read

Denys Zaichenko for Denys

Oct 28

Supabase exposed schemas: what the list opens up

#database #postgres #security

4 min read

Denys Zaichenko for Denys

Oct 26

Supabase 42501 permission denied is a grant problem, not RLS

#database #postgres #security #sql

4 min read

Denys Zaichenko

Oct 26

Made a free security check for Supabase projects

#supabase #vibecoding #security #ai

1 min read

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