It wasn't a database breach. It was a logic flaw. We often think hackers need complex tools to br...

It wasn't a database breach. It was a logic flaw. We often think hackers need complex tools to br...It wasn't a database breach. It was a logic flaw. We often think hackers need complex tools to br...

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Nanda Maulana

pro

• Dec 14

It wasn't a database breach. It was a logic flaw. We often think hackers need complex tools to break into an app. Sometimes, they just need to ask politely.

In a recent case study of a FinTech app, attackers didn't break encryption. They simply changed one parameter in an API call.

They changed

from_account: USER_A
//To
from_account: USER_B

Because the server never checked if the requester actually owned the account, the transfer went through. This is called Insecure Authorization (IDOR), and it is the #1 vulnerability in modern FinTech.

An attacker only needs to find one flaw. You need to find them all.

for early-stage startups or SaaS owner (mobile app based). I will perform a FREE targeted assessment of your app's core transaction logic to catch issues like IDOR before they become a headline.