McEntee's Subsea Warning: Ireland's Digital Backbone Under Threat BuiltBrilliant

In October 2026, the Minister for Justice warned that Ireland’s subsea network is more vulnerable than ever, in the context of escalating tensions. The warning sounds geopolitical, and it is, but its practical meaning reaches every business in the country, because almost all of Ireland’s international internet traffic travels through cables on the seabed.

What is actually at stake

Subsea cables carry the traffic that runs Irish banking, cloud services, remote work, and e-commerce. They are vulnerable to physical damage, from anchors and weather and, increasingly, deliberate action. Ireland’s geography as a transatlantic landing point makes the network both valuable and exposed.

The chain of consequences

If a cable is damaged or severed, the consequences cascade: degraded or lost connectivity, slow applications, failed payments, and disruption to everything built on the assumption of always-on internet. For a business, that looks like an outage with no fix date, and the only question is how you prepared.

The resilience moves that matter

Backups in a different location. The 3-2-1 rule with one copy off-site, ideally another region or provider.
Multi-region cloud configuration for anything where uptime is revenue, per our cloud hosting guide.
A written fallback. What does the business do if connectivity drops for a day? Write the answer before you need it.
Connectivity redundancy where offline means closed: a secondary connection is cheap insurance against a silent phone.

The full picture, including the NCSC’s role and the data centre boom, is in our Irish digital infrastructure guide.

The institutional response

The warning came with action behind it: the NCSC runs the State’s CSIRT-IE incident response team and is the National Competent Authority contact for the NIS Directive. The State treats the cables as strategic, which is your cue to treat your own connectivity the same way.