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In-depth research reports on internet infrastructure intelligence, threat landscape analysis, and security methodology.
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Infrastructure Security Blog
Stay up to date with the latest insights on infrastructure intelligence, threat hunting, and cybersecurity research from the Whisper Security team.
Prince of Persia: mapping the backend, and a reserve of domains staged for what comes next
An investigation into Prince of Persia’s backend infrastructure, revealing a previously unreported server, 58 dormant domains, and DNS patterns that can expose potential C2 infrastructure before activation.
The infrastructure you depend on but don't own
A single DNSSEC failure at Germany’s .de registry made millions of domains unreachable. The outage shows how infrastructure you don’t own can still become part of your attack surface
What an ASN actually is
Every IP belongs to an Autonomous System. Understanding ASNs is the first step to uncovering infrastructure relationships, tracing attacks, and investigating the internet beyond individual domains.
Whisper welcomes Jonathan Cave
We’re proud to officially welcome Jonathan Cave to the Whisper Advisory Board.
Whisper welcomes Jeff Osborn
We’re excited to announce that Jeff Osborn, is joining Whisper’s Advisory Board.
Whisper welcomes Merike Kaeo
We’re proud to announce that Merike has joined the Whisper Advisory Board.
White Papers & Reports
Download in-depth research and technical reports on infrastructure intelligence, DNS security, BGP monitoring, and threat detection from the Whisper.
Six Domains in Eight Seconds: A World Cup 2026 Phishing Investigation
A World Cup 2026 threat investigation: six FIFA lookalikes registered in eight seconds, and how a single monitoring lead expanded into a nine-domain phishing cluster.
Iran Internet Blackout - A Forensic Analysis
A real-time forensic analysis of the nationwide internet blackout in Iran. We present evidence of a coordinated, state-level shutdown, detailing the methods used to sever connectivity for 90 million people and exposing the anatomy of digital authoritarianism.
The State of DNSSEC 2025
A comprehensive analysis of DNSSEC adoption across 200+ million domains reveals that while adoption is growing, the vast majority of the internet remains vulnerable to DNS-based attacks. This report details the current landscape, key growth trends, and the critical role of infrastructure providers.
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