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
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
- Check how passwords are stored — Look in your database. If you can read the actual passwords, they're not properly protected
- Implement proper password hashing — Have a developer add bcrypt or Argon2 hashing so passwords are scrambled before storage
- Force all users to reset their passwords — Once proper hashing is in place, require everyone to create a new password
- Make sure your site uses HTTPS — Check that your website URL starts with https:// and that your hosting has an SSL certificate
- Check server logs — Search your logs for any password data and configure logging to exclude sensitive information
- 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.
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I'll fill this later
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.
Taufan
I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms.
Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact.
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
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.
Meïr Ankri
Full-stack developer specializing in React / Next.js / Node.js with 6+ years of experience. I've worked across various sectors including automotive (Reezocar/Société Générale), healthcare (Medical Link SaaS), and e-commerce (Glasman). I build web apps end-to-end, from architecture to production, with a focus on scalability, performance, and code quality. I also mentor junior developers and contribute to technical decisions and code reviews.
Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
Victor Denisov
Developer
Franck Plazanet
I am a Strategic Engineering Leader with over 8 years of experience building high-availability enterprise systems and scaling high-performing technical teams. My focus is on bridging the gap between complex technology and business growth.
Core Expertise:
🚀 Leadership: Managing and coaching teams of 15+ engineers, fostering a culture of accountability and continuous improvement.
🏗️ Architecture: Enterprise Core Systems, Multi-system Integration (ERP/API/ETL), and Core Database Structure.
☁️ Cloud & Scale: AWS Expert; architected systems handling 10B+ monthly requests and managing 100k+ SKUs.
📈 Business Impact: Aligning tech strategy with P&L goals to drive $70k+ in monthly recurring revenue.
I thrive on "out-of-the-box" thinking to solve complex technical bottlenecks and am always looking for ways to use automation to improve business productivity.
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.
Describe what's wrong in plain English. No technical knowledge needed.
Get HelpFrequently 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.