Common Issues security

My Users' Passwords Might Be Exposed

You just realized — or someone told you — that your app might not be storing user passwords safely. Maybe passwords are saved as plain text in the database, visible in logs, or sent without encryption. If anyone gets access to your database, they can see every user's actual password.

This is one of the most serious security problems an app can have. People reuse passwords across many sites, so if their password is exposed on your app, hackers can try it on their email, bank, and social media accounts too.

Even if no one has exploited this yet, you need to fix it before they do. The longer passwords sit unprotected, the greater the risk.

Error Messages You Might See

No obvious error — you discover this by checking your database or logs Security audit warning: passwords stored in plaintext SSL certificate missing Mixed content warning
No obvious error — you discover this by checking your database or logsSecurity audit warning: passwords stored in plaintextSSL certificate missingMixed content warning

Common Causes

  • Passwords stored as plain text — The app saves the actual password instead of a scrambled (hashed) version that can't be read back
  • Passwords visible in database — You can open your database and read users' passwords in a column, which means they're not encrypted
  • Passwords sent over unencrypted connections — Your login page uses HTTP instead of HTTPS, so passwords travel over the internet unprotected
  • Passwords logged in server logs — The app accidentally writes passwords to log files that might be accessible to others
  • Using homemade encryption — Instead of using proven security methods, the AI used a custom approach that isn't actually secure

How to Fix It

  1. Check how passwords are stored — Look in your database. If you can read the actual passwords, they're not properly protected
  2. Implement proper password hashing — Have a developer add bcrypt or Argon2 hashing so passwords are scrambled before storage
  3. Force all users to reset their passwords — Once proper hashing is in place, require everyone to create a new password
  4. Make sure your site uses HTTPS — Check that your website URL starts with https:// and that your hosting has an SSL certificate
  5. Check server logs — Search your logs for any password data and configure logging to exclude sensitive information
  6. Consider using a trusted auth service — Services like Supabase Auth, Firebase Auth, or Auth0 handle password security properly so you don't have to

Real developers can help you.

Jaime Orts-Caroff Jaime Orts-Caroff I'm a Senior Android developer, open to work in various fields ISHANTDEEP SINGH ISHANTDEEP SINGH Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems. Kingsley Omage Kingsley Omage Fullstack software engineer passionate about AI Agents, blockchain, LLMs. rayush33 rayush33 JavaScript (React.js, React Native, Node.js) Developer with demonstrated industry experience of 4+ years, actively looking for opportunities to hone my skills as well as help small-scale business owners with solutions to technical problems hanson1014 hanson1014 Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround. Omar Faruk Omar Faruk As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience. My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture. I played a key role in creating a scalable and maintainable platform to support educators and learners globally. I'm enthusiastic about embracing new challenges and making meaningful contributions. Krishna Sai Kuncha Krishna Sai Kuncha Experienced Professional Full stack Developer with 8+ years of experience across react, python, js, ts, golang and react-native. Developed inhouse websearch tooling for AI before websearch was solved : ) Yovel Cohen Yovel Cohen I got a lot of experience in building Long-horizon AI Agents in production, Backend apps that scale to millions of users and frontend knowledge as well. Matthew Jordan Matthew Jordan I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job. Dor Yaloz Dor Yaloz SW engineer with 6+ years of experience, I worked with React/Node/Python did projects with React+Capacitor.js for ios Supabase expert

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Frequently Asked Questions

How can I tell if passwords are stored securely?

Look at your database. If you can read the actual passwords (like 'mypassword123'), they're NOT secure. Properly hashed passwords look like long random strings of characters (like '$2b$10$xJ3...') that are impossible to read back.

Should I tell my users about this?

Yes. Be honest and transparent. Tell them you discovered a security issue, that you've fixed it, and ask them to change their password on your app AND on any other site where they used the same password.

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