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Engineering

What Is an SMS Pumping Attack? How to Detect and Prevent SMS Toll Fraud

SMS pumping fraud is when bots flood your OTP endpoint with fake requests to premium-rate numbers — and you foot the bill. Here's how it works, how to detect it, and how to stop it.

March 18, 2026
Engineering

Node.js Security Best Practices for Authentication

Authentication is the front door to your application — and in Node.js, getting it wrong is easier than you'd think. This guide walks through the Node.js security best practices every developer should follow when building or auditing an auth system.

March 14, 2026
Engineering

HTTP 502 Bad Gateway: What It Means and How to Fix It

A 502 Bad Gateway error means the server acting as a gateway or proxy received an invalid response from an upstream server. Here is what causes it and how to fix it.

March 14, 2026
Engineering

Webhooks vs APIs: What's the Difference?

Most products today integrate with payment platforms, identity providers, messaging services, and analytics tools. Two communication models power the majority of these integrations: APIs and webhooks.

Fung
March 14, 2026

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