Taiwan's Ministry of Digital Affairs (MODA) is completing the Taiwan-Matsu No. 4 subsea cable and rolling out new microwave backup stations across all four Matsu townships, bringing the islands' subsea cable count to three and giving each township at least two non-cable fallback links. It is a rare example of a government responding to an infrastructure vulnerability with engineering rather than rhetoric.
The problem is not hypothetical. On April 29, 2026, the Taiwan-Matsu No. 3 cable suffered a core wire break roughly 2.64 kilometers off Dongyin, knocking out the Beigan-Dongyin segment and affecting around 1,500 residents until Chunghwa Telecom activated backup microwave transmission (MODA press release). That break followed a suspected act of damage: Coast Guard officers detained 11 crew members of the Chinese-flagged work barge Hai Hong Gong 66 after it allegedly severed core wires in the same cable while salvaging a grounded fishing vessel near Dongyin on March 30-31 (Focus Taiwan). It was not an isolated incident — MODA's own account of the January 2025 breaks lists core wire fractures going back to October 2023, plus near-simultaneous failures of the No. 2 and No. 3 cables on January 15 and February 16, 2025 (MODA press release).
The steelman for hardening
There is a strong case for treating this as a security problem, not just a maintenance one. Matsu sits a few kilometers off the Chinese coast, and its digital lifeline has been severed by vessels of ambiguous origin often enough that Taiwanese officials and outside researchers now describe a pattern of "gray zone" pressure rather than a string of coincidences. A population that loses banking, emergency dispatch, and government services every time a trawler drags an anchor across a cable route is not an acceptable steady state, and no amount of post-hoc repair speed substitutes for redundancy that exists before the next cut. Given that reality, spending public money on a fourth cable and permanent microwave infrastructure — rather than simply repairing and hoping — is a reasonable, arguably overdue, precaution.
What MODA actually built
What makes the Matsu program worth highlighting is its specificity. The No. 4 cable runs 303 kilometers from Dongyin to Bali in New Taipei and is being laid with metal or plastic conduit protection while routed around the busiest fishing grounds, engineering meant to reduce the odds of the next anchor strike rather than just accelerate the next repair (Taiwan News). Existing microwave links already carry 12.6 gigabits per second of capacity against Matsu's roughly 9.5 Gbps peak weekday demand, with priority routing for hospitals, banks and government agencies when cables go down; nine satellite stations built under an earlier resilience project add a third layer behind that (MODA press release). MODA has also piloted low-earth-orbit satellite connectivity as a further backstop, according to reporting on the April break (Taipei Times).
Critically, MODA paired this with a narrowly drawn legal update rather than an open-ended security mandate. Amendments to seven statutes — including the Telecommunications Management Act — took effect in January 2026, setting penalties of one to seven years' imprisonment and fines up to NT$10 million for intentional damage to subsea cables, rising to three-to-ten years and NT$50 million if national security is implicated, alongside separate, lower penalties for negligent damage (Taipei Times). That is a proportionate, offense-specific penalty schedule aimed at a defined act — cutting a cable — not a broad new surveillance or licensing regime that could be repurposed against ordinary telecom operators or foreign investment.
Why this is the right model
This is the version of "resilience policy" that free-speech and open-internet advocates should want more governments to copy. Taiwan did not respond to cable sabotage by restricting who can operate telecom infrastructure, imposing data localization, or creating a vague "critical infrastructure" designation broad enough to justify unrelated content controls — a pattern seen in other jurisdictions that use security framing to expand executive reach over networks. Instead it funded physical redundancy, wrote penalties tied to a specific harm, and published the engineering details publicly. The Telecommunications Management Act amendment applies criminal penalties to an act — deliberately or negligently damaging cables — not to speech, ownership structure, or market access, which limits the risk of scope creep.
The remaining test is whether the model scales. Matsu is a population of roughly 13,000 across four townships; underwriting three cables, microwave, satellite and now LEO backup for that community is affordable in a way it would not be for Taiwan's much larger main-island population, let alone for smaller states without Taiwan's telecom budget or geopolitical urgency. The honest caveat is that this is boutique infrastructure resilience purchased at real cost per resident — a defensible choice given the security stakes off Matsu specifically, but not a template every government can fund for every remote island. What is transferable is the sequencing: harden first, legislate narrowly second, and resist the temptation to fold cable protection into a broader speech-and-platform security agenda. Taiwan's approach shows those two goals — protecting physical network infrastructure and preserving an open, lightly regulated internet — are not in tension. Other governments citing subsea cable risk to justify unrelated content or platform restrictions should have to explain why they can't do the same.