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Yanir Tsarimi Profile picture
Yanir Tsarimi
@Yanir_
Hacker. I try to write about security in ways most can understand. Microsoft Most Valuable Researcher & Google Top Bug Hunter ‘22. @breachproof
May 7 • 8 tweets • 2 min read
I hacked Microsoft's AI bot for healthcare on a Friday night

Within hours I could access data of multiple healthcare organizations, but it didn't stop there

Microsoft fixed the issue, and then I did it again, and again, and again..

Here's the story of Lethal Injection: 💉 Image I started looking into the Azure Health Bot service, which lets healthcare organizations build chat bots for their patients

I was completely unfamiliar with the service, but the fact that it had access to potentially sensitive information made it an interesting target 🎯
Mar 7, 2022 • 10 tweets • 3 min read
I found a vulnerability in #Azure allowing me to access Azure accounts of companies worth billions

We all know vulnerabilities exist. This isn't an injection, XSS, or RCE.

But the crazy thing about it?
It took 2 hours to discover. 🤯

Here's the story of #AutoWarp👇 (1/10) Scrolling through the endless list of Azure services, I’m looking for a new target

So I click “Automation Accounts” not really knowing what it even means. I quickly realized that this is basically a service for running Python & PowerShell scripts. 🧐 (2/10)