TDS Telecommunications LLC · Breach

Global Secret claims attack on US telecom TDS; claim unverified

Oct 29, 2026 · 1 min read

Extortion group Global Secret listed TDS Telecom, a Madison, Wisconsin-based fiber, TV and phone provider, as a victim on its leak site on Oct 29. The listing gives no details on the data allegedly taken, no samples have been verified, and TDS has not confirmed an incident. This is the second extortion claim against TDS in 2026; no breach was disclosed after the first, in May.

By HIFY Radar newsroom Updated 10/29/2026 07:14 PM Get this every day →← Back to the feed 1 source

MediumBreachNo software to update

In this article

What happened
Why it matters
What to do
For the technical team
Timeline
Sources

What happened

Extortion group Global Secret listed TDS Telecom, a US fiber, TV and phone provider, as a victim on its leak site, dated Oct 29. The claim includes no details on the data allegedly taken and no samples have been verified. TDS has not publicly confirmed an incident.

Why it matters

If genuine, a breach could expose subscriber account data and network details: TDS serves more than a million residential and business connections across the US and reports about $1.3 billion in annual revenue. This is the second extortion claim against TDS this year; no breach was disclosed after the first, in May. For now, it remains an unverified attacker claim.

What to do

Wait for an official statement from TDS and monitor the group's leak site for data samples. If TDS is a supplier or partner, review which data and services sit with the company.

For the technical team

Affected: TDS Telecommunications LLC (TDS Telecom), provedora de internet de fibra, TV e telefone sediada em Madison, Wisconsin (E · TDS Telecommunications LLC (TDS Telecom), Madison, Wisconsin-based provider of fiber internet, TV and phone services.
Exploitation: Unverified claim. Global Secret Group listed TDS on its leak site on Oct 29, 2026, with no data details; reported by Daily Dark Web. No samples verified and no confirmation from TDS or third parties.
Fix: No software to update
More details: Attributed group: Global Secret Group, an extortion crew. Per Daily Dark Web, TDS has about $1.3 billion in annual revenue and serves more than a million residential and business connections across rural and suburban US. Second extortion claim against TDS in 2026: a different group listed the company in May 2026 and no breach was ever disclosed. No intrusion vector described in the source.