FOR IMMEDIATE RELEASE
Date: May 29, 2026
CONTACT: LU ANNE ESPOSITO | LU@BACKWATERFORENSICS.COM | BACKWATERFORENSICS.COM
Backwater Forensics Publishes National Infrastructure Zombie Survey
RESEARCH DOCUMENTS BGP ROUTING ANOMALIES ACROSS 45 STATES; FEDERAL REMEDIATION CONFIRMED WITHIN 17 DAYS OF DISCLOSURE
NORTHEAST GEORGIA — May 29, 2026 — Backwater Forensics today published findings from INFRA-PATCH-MAPPING, a five-month national survey of BGP routing anomalies created by incomplete telecommunications carrier acquisitions. The research identified 24 Autonomous System Numbers (ASNs) in anomalous routing states across six major cable and broadband acquisition cases, documented 3,269 ZIP-level vulnerability records across 45 states, and produced a confirmed federal remediation event within 17 days of a formal FBI disclosure filing.
What Was Found
When one telecommunications carrier acquires another, the acquired IP space and routing infrastructure is supposed to be integrated or decommissioned. The research found systematic evidence that this integration is frequently incomplete. Pre-acquisition ASNs — Autonomous System Numbers that should have been retired — remain active in global BGP routing tables, announcing IP prefixes under routing authority that no longer corresponds to any publicly documented network operator. The investigation documented three distinct anomaly classes:
- Zombie ASNs — pre-acquisition ASNs still announcing live prefixes with no accountable successor operator
- Retention anomalies — pre- and post-acquisition ASNs routing in parallel, creating dual-authority conditions
- Third-party control — routing authority held by an entity with no documented relationship to the acquisition chain
A total of 24 ASNs were documented across 6 acquisition cases, including findings related to Charter/TWC, Cablevision/Altice, EarthLink/Windstream, Insight/TWC, AT&T/@Home, and Verizon/MCI succession chains.
Federal Response
All findings were disclosed to CISA, the FBI, and IC3 through established responsible disclosure channels prior to publication. A formal FBI 5.2 report and CISA supplemental filing were submitted on May 2, 2026, accompanied by a statistical analysis establishing that the probability of all documented anomalies being coincidental is approximately 1 in 578 quadrillion (P = 1.73×10⁻¹⁸).
On May 19, 2026 — 17 days after the FBI filing — four ASNs under active monitoring changed state simultaneously. One legacy transit ASN went dark and entered decommissioning. A second was formally reclaimed. Two additional anomalous entries normalized to verified carrier infrastructure. The event is correlated with INTERPOL Operation Ramz, a coordinated infrastructure action involving Team Cymru as intelligence partner.
The remediation was verified through RIPE NCC portal records and RIPEstat routing state data.
What Was Not Published
The physical infrastructure conditions that would allow an attacker to locate or exploit acquisition boundary vulnerabilities in the HFC backbone are outside the scope of this publication and have not been disclosed publicly. Those findings have been shared exclusively with CISA, the FBI, and relevant carriers through responsible disclosure. There are no current plans to publish them.
A formal notice of intended disclosure has been submitted to CISA. Backwater Forensics will remove or modify any published content upon request from CISA or other relevant federal agencies without delay.
Methodology
The national database was constructed from public carrier acquisition records — SEC merger documents, FCC franchise transfer filings, and ARIN/RDAP attribution data — before any validation data was collected. Case selection was determined a priori from acquisition histories, not from results. BGP routing state was validated via RIPEstat, bgp.tools, and ARIN RDAP. All data sources are public record.
About Backwater Forensics
Backwater Forensics is an independent digital forensics research practice specializing in infrastructure security, Apple device forensics, and forensic tooling. The practice publishes technical research and provides forensic services to investigators and legal professionals.
Contact:
Lu Anne Esposito, MS Digital Forensic Science
lu@backwaterforensics.com
backwaterforensics.com
VRF#26-04-TPWXX