<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Differential analysis · Diary of a Lost Honeypot</title><link>https://blog.efespain.com/en/tags/differential-analysis/</link><description>A honeypot in some corner of the network. Every infection, a story worth telling.</description><generator>Hugo</generator><language>en</language><managingEditor>eFeSpain</managingEditor><webMaster>eFeSpain</webMaster><copyright>2026 eFeSpain</copyright><lastBuildDate>Tue, 01 Sep 2026 12:00:00 +0000</lastBuildDate><atom:link href="https://blog.efespain.com/en/tags/differential-analysis/index.xml" rel="self" type="application/rss+xml"/><item><title>The twin I was missing</title><link>https://blog.efespain.com/en/chapter-22/</link><pubDate>Tue, 01 Sep 2026 12:00:00 +0000</pubDate><guid>https://blog.efespain.com/en/chapter-22/</guid><description>A bot of the Mirai school carries the address of whoever gives it orders. I looked for this one's by four different routes and found it by none — and along the way I published a theory of my own that turned out to be false. What finally worked wasn't a better tool: it was realising that somewhere out there sat another binary, compiled from the same code, whose command centre somebody had already published. With both in front of me, the difference between them is one thousand one hundred and thirty bytes.</description></item></channel></rss>