The Angry Spark APT Mystery: A Year-Long Backdoor, One Victim, Zero Attribution

From Three Buddy Problem by Security Conversations

April 18, 2026 · 2h 35m

About this episode

The episode discusses a mysterious backdoor that evaded detection for a year, connecting it to elite-level APT intrusions and various cybersecurity topics.

( Presented by TLPBLACK : A cybersecurity intelligence platform focused on sharing curated, high-sensitivity threat insights and research with trusted security professionals. ) Three Buddy Problem - Episode 94 : We discuss a mysterious, VM-obfuscated backdoor that lived undetected on a single U.K. machine for a year before disappearing, finding clues pointing to an elite-level APT intrusion that still evades broader industry coverage. Plus, connecting the dots across AI-driven vulnerability discovery, Microsoft’s massive Patch Tuesday, Jensen Huang talks cybersecurity, Mythos dangers and Chinese chips, and the quiet erosion of CVE enrichment at NIST. Cast: Juan Andres Guerrero-Saade , Ryan Naraine and Costin Raiu . Timestamps: 0:00 – Intros + AI news whiplash 5:10 – Patch Tuesday breakdown: Microsoft's second-largest CVE release ever 7:32 – AI accelerating vulnerability discovery at record pace 10:00 – Frontier lab cyber models, fine-tuning, guardrail removal & KYC 12:37 – FreeBSD NFS bug: Opus 4.6 was already finding critical vulns 14:26 – Anthropic's infrastructure strain: Is Opus being nerfed? 21:05 – OpenAI's Trusted Access for Cyber vs. Anthropic's Mythos cabal 28:45 –…

People in this episode

Hosts: Juan Andres Guerrero-Saade, Ryan Naraine, Costin Raiu

Topics covered

cybersecurity
APT intrusion
vulnerability discovery
Microsoft Patch Tuesday
threat intelligence
malware

Keywords

APT
backdoor
cybersecurity
vulnerability
Microsoft
threat intel
malware
Adobe Acrobat
ZionSiphon

Mentioned in this episode

Organizations: Microsoft, OpenAI, Anthropic, NIST

Products: Adobe Acrobat, ZionSiphon, Opus, Mythos

Places: U.K.