Articles in category Case

Case

How I Helped a Company Investigate Missed Payments Using PayPal APIs and New Relic

In the fast-paced world of digital transactions, one missed payment can set off a chain of support tickets, frustrated users, and accounting inconsistencies. Recently, I was brought in to assist a company that was experiencing a troubling number of "payment not received" reports, despite successful charges on PayPal. My task? Get to the root cause, fix it, and help prevent it from happening again.

Management

Watermelon reporting

What is watermelon reporting

Management

Арбузовая отчетность (watermelon reporting)

Арбузовая отчетность (watermelon reporting)

Case

Zero-Width Space Characters: A Unicode Attack on Spam Filters

Zero-width space (ZWSP) and other invisible Unicode characters are used by spammers to bypass keyword-based spam filters. This article explains how the attack works, which characters are commonly abused, and how to defend your spam filtering pipeline against them.