Data Centers, Telecommunications Networks, and Space-Based Systems: Modernizing DHS’s SRMA Role for the Communications and IT Sectors

Defense Posture and Global ThreatsHomeland Security Subcommittee on Cybersecurity and Infrastructure Protection · 2026-04-29 · 119th Congress
The Homeland Security Subcommittee on Cybersecurity and Infrastructure Protection convened this hearing to examine whether DHS's Cybersecurity and Infrastructure Security Agency (CISA), acting as the sector risk management agency (SRMA) for the communications and information technology sectors, has the resources and authorities to keep pace with evolving threats — including hyperscale data centers, telecommunications networks, subsea cables, and space-based systems [0:11:55]. Begins at 0:11:24
Transcript
Highlights

Title

DHS's role protecting communications, data centers, and space systems from cyber threats

Purpose

The Homeland Security Subcommittee on Cybersecurity and Infrastructure Protection convened this hearing to examine whether DHS's Cybersecurity and Infrastructure Security Agency (CISA), acting as the sector risk management agency (SRMA) for the communications and information technology sectors, has the resources and authorities to keep pace with evolving threats — including hyperscale data centers, telecommunications networks, subsea cables, and space-based systems0:11:55. Four industry witnesses testified about workforce cuts at CISA, the disbanding of key public-private collaboration mechanisms, and supply chain risks from Chinese-made components. The hearing was interrupted midway by a floor vote series and reconvened roughly 90 minutes later. Begins at0:11:24

Who spoke

Chairman Andrew Garbarino / presiding chair0:11:24: Opened the hearing on DHS's SRMA role for communications and IT0:11:24, later questioned witnesses on designating data centers as separate critical infrastructure1:59:43 and on subsea cable threats2:25:46.

Ranking Member Bennie Thompson (D-MS), Full Committee0:12:39: Said the October 2024 Salt Typhoon breach by Chinese state-backed hackers accessed sensitive communications of high-profile Americans undetected for months0:12:590:13:27; criticized the disbanding of the Cyber Safety Review Board and CIPAC, and said CISA has lost roughly 1,000 employees, nearly a third of its staff0:14:28.

Robert Mayer, USTelecom0:22:43: Described improved government-industry intelligence sharing and CISA's cybersecurity advisories1:58:23; called for coherent supply chain policy across Commerce BIS, FCC, and CISA and cited a hardware bill of materials effort2:13:29.

Sam Visner, Space ISAC0:26:33: Said satellites in orbit could reach 30,000–60,000 by 2030 and that nearly every critical infrastructure now depends on space0:29:08; noted Russia attacked a commercial satellite communications system the day before invading Ukraine0:31:41; recommended a White House space summit and NSC coordination2:23:00.

RADM Mark Montgomery, FDD/CCTI0:32:17: Argued CISA's workforce and program cuts, including CPAC's disbandment, weaken national cyber resilience0:33:09; said subsea cables carry 95% of data flow versus 5% for satellites and are largely undefended2:26:13; endorsed making space and data centers separate critical infrastructure sectors with NASA as SRMA for space0:37:032:01:13.

Scott Algeier, IT-ISAC0:37:35: Listed steps to renew CISA including replacing CPAC, extending the Cybersecurity Information Sharing Act of 2015, and confirming a Senate-approved CISA director0:39:040:39:49; said data center providers are already integrated into IT-ISAC's threat sharing2:02:57.

Rep. Robert Garcia / Ranking Member Delia Ramirez (D-IL)2:03:47: In her first hearing as ranking member, said CISA lost nearly a third of its workforce and its Stakeholder Engagement Division lost 96 of 189 staff between January and December 20252:05:392:06:06; asked Montgomery how loss of institutional knowledge affects SRMA duties2:07:03.

Rep. James Langevin (D-RI)2:17:17: Said CISA's last acting director failed a counterintelligence polygraph and uploaded sensitive documents to ChatGPT, and the next nominee withdrew from Senate consideration2:18:41; asked witnesses if CISA staffing cuts make the country safer and pressed on Nvidia H200 chip sales to China2:19:272:20:36.

Rep. Mikie Sherrill (D-NJ)2:27:17: Described AI data centers raising utility costs up to 300% and causing pollution and water contamination, citing a Kenilworth, NJ facility facing community pushback2:27:242:27:54; touted her AI Data Center Site Selection Transparency Act of 2026 requiring 180 days' community notice2:27:54.

Key moments

Thompson said CISA has forced out roughly 1,000 employees — almost a third of its staff — and disbanded the Cyber Safety Review Board0:14:280:14:55.

Montgomery recommended designating space systems and data centers as separate critical infrastructure sectors, with NASA as the SRMA for space0:37:032:01:13.

Montgomery said in Volt Typhoon, the access vector was American-made Cisco equipment, showing risk isn't limited to foreign-made hardware0:35:42.

Montgomery stated subsea cable cuts could eliminate 95% of data flow versus 5% for satellite attacks, calling cables "generally undefended assets" targeted by Russia and China2:26:132:26:40.

Ramirez cited CISA's Stakeholder Engagement Division losing 96 of 189 staff (about half) between January and December 20252:06:06.

Langevin noted a prior CISA acting director failed a counterintelligence polygraph and uploaded sensitive government documents to ChatGPT before removal, and the next nominee withdrew from Senate consideration2:18:412:19:05.

Montgomery gave the Biden administration a "D" and the current administration an "F" on CISA performance2:20:36.

Montgomery cited an "Illuminations" study finding 180 US weapon systems contained Chinese-made parts, often two or three supply-chain levels down2:09:33.

Langevin said no witness could justify the administration's approval to sell Nvidia H200 AI chips to China, noting a bill addressing this has stalled after passing the House Foreign Affairs Committee2:21:222:21:50.

Sherrill said an AI data center in Kenilworth, NJ faced community pushback and cited utility cost increases up to 300% linked to data center growth2:27:172:27:24.

Metadata

CommitteeHomeland Security Subcommittee on Cybersecurity and Infrastructure Protection
Chamber / CongressHouse · 119th Congress
Date2026-04-29
TypeHearing
Witnesses
Mr. Robert Mayer — Senior Vice President, Cybersecurity & Innovation, USTelecom-The Boradband Association
Mr. Sam Visner — Chair, Board of Directors, Space Information Sharing and Analysis Center
Rear Admiral Upper Half Mark Montgomery — Senior Director and Senior Fellow, Center on Cyber and Technology Innovation, Foundation for Defense of Democracies
Mr. Scott Algeier — Executive Director, Information Technology-Information Sharing and Analysis Center
Videoyoutube
Transcript180 caption blocks · 10,565 words · 2:31:57 runtime
EventCongress.gov 119218