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Serhat Doğan

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Joined on Apr 1, 2026

Apr 6

The Refund State Machine That Saved Our SMS Reseller from Bleeding Money

#showdev #postgres #architecture #backend

5 min read

Apr 6

Building a Privacy-First Phone Verification Architecture: Lessons from 6 Months in Production

#showdev #privacy #architecture #webdev

5 min read

Apr 4

I Analyzed 10,000 SMS Verifications Across 50 Countries — Here's What the Data Shows

#privacy #data #security #webdev

3 min read

Apr 2

I Tested 8 SMS Verification Services After SMS-Activate Shut Down — Honest Results

#webdev #api #security #review

4 min read

Apr 2

Your Phone Number Is More Dangerous Than Your SSN — Here's the Data to Prove It

#privacy #security #cybersecurity #webdev

4 min read

Apr 1

How SMS Verification Actually Works: Architecture, Failures, and Why 30% of Codes Never Arrive

#webdev #security #architecture #tutorial

4 min read

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