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CitrixAI Architect

SAD DNS Vulnerability: Explained

SAD DNS Vulnerability: Explained

This article details in length about the recently discovered Side channel AttackeD DNS exploit. This article appears on Cloudflare, and is a repost due to the critical nature of the findings. This week, at the ACM CCS 2020 conference, researchers from UC Riverside and Tsinghua University announced a new attack

Fourier Transforms: An interactive introduction

Fourier Transforms: An interactive introduction

I had to implement some rather interesting methods to get the functionalities of the Fourier Transform code to properly work!

Tracing Kernel Functions: How the illumos AMD64 FBT Provider Intercepts Function Calls

Tracing Kernel Functions: How the illumos AMD64 FBT Provider Intercepts Function Calls

For my money there is perhaps nothing more valuable than in situ kernel debugging. The ability to ask questions of any part of the kernel, on a live production system, without stopping or pausing anything, is quite frankly, amazing. One such avenue to in situ kernel debugging is the DTrace

Simulating RAM in Clojure

Simulating RAM in Clojure

Today, I wanted to take the time to dissect the statement I hear countless times: “Computers are all made out of logic gates”. From this we deduce that logic gates are very simple machines, analogous to light switches. This raises the question: how exactly do kind-of-light-switches come together to form

Why TCP Over TCP Is A Bad Idea

Why TCP Over TCP Is A Bad Idea

A frequently occurring idea for IP tunneling applications is to run a protocol like PPP, which encapsulates IP packets in a format suited for a stream transport (like a modem line), over a TCP-based connection. This would be an easy solution for encrypting tunnels by running PPP over SSH, for

China's Xi Jinping personally halted Ant's record-breaking $37 billion IPO

China's Xi Jinping personally halted Ant's record-breaking $37 billion IPO

Key Points * Chinese President Xi Jinping halted Ant Group’s historic $37 billion initial public offering after its founder, Jack Ma, criticized government leaders, The Wall Street Journal reported. * A week before the Chinese fintech was set to go public, Ma made incendiary comments that didn’t go down well

How Hackers Bled 118 Bitcoins Out of Covid Researchers in U.S.

How Hackers Bled 118 Bitcoins Out of Covid Researchers in U.S.

The negotiator entered the chatroom four days after the attack. Hackers had locked down several servers used by the epidemiology and biostatistics department at the University of California at San Francisco, and wanted a $3 million ransom to give them the keys. On Friday, June 5, at 6:50 p.