Let's Know Things

This week we talk about modems, WiFi, and kinda sorta bribes.We also discuss Huawei, government subsidies, and the FCC.Recommended Book: Replaceable You by Mary RoachTranscriptMany homes, those with WiFi connections to the internet, have two different devices they use to make that connectivity happen.The first is a modem, which is what connects directly to your internet service provider, often via an ethernet jack in the wall that connects to a series of cables webbed throughout your city.The second is a router, which plugs into the modem and then spreads that signal, derived from that network of city-wide cables around your home, either by splitting that single ethernet jack into multiple ethernet jacks, allowing multiple devices to plug into that network, or by creating a wireless signal, WiFi, that multiple devices can connect to wirelessly in the same way. Many routers will have both options, though in most homes and for most modern devices, WiFi tends to be the more common access point because of its convenience, these days.That WiFi signal, and the connection provided via those additional ethernet ports on the router, create what’s called a Local Area Network of devices, or LAN. This local area network allow these devices—your phone and your laptop, for instance—to connect to each other directly, but its primary role for most people is using that connection to the modem to grant these devices access the wider internet.In addition to providing that internet access and creating the Local Area Network, connecting devices on that network to each other, routers also usually provide a layer of security to those devices. This can be done via firewalls and with encryption, which is important as unprotected networks can leave the devices plugged into them vulnerable to outside attack. That means if the router is breached or in some other way exploited, a whole company’s worth of computers, or all your local devices at home, could be made part of a botnet, could be held hostage by ransomware, or could be keylogged until you provide login information for your banks or other seemingly secure accounts to whomever broke into that insufficiently protected LAN.What I’d like to talk about today is a recently announced ban on some types of routers in the US, the reasoning behind this ban, and what might happen next.—On March 23, 2026, the US Federal Communications Commission announced a ban on the import of all new consumer-grade routers not made in the United States.This ban does not impact routers that are already on the market and in homes, so if you have one already, you’re fine. And if you’re buying an existing model, that should be fine, too.It will apply to new routers, though, and the rationale provided by the FCC with the announcement is that imported routers are a “severe cybersecurity risk that could be leveraged to immediately and severely disrupt US critical infrastructure.”They also cited recent, major hacks like Salt Typhoon, saying that routers brought into the US provided a means of entry for some components of those attacks.This stated concern is similar to the one that was at the center of the Trump administration’s 2019 ban of products made by Chinese tech company Huawei in the United States. Huawei made, and still makes, all kinds of products, including consumer-grade smartphones, and high-end 5G equipment sold to telecommunications companies around the world for use in their infrastructure.The concern was that a company like Huawei might leverage its far better prices, which were partly possible because of backing from the Chinese government, to put foreign competitors out of business. From there, they could dominate these industries, while also getting their equipment deep in the telecommunications infrastructure of the US and US allies. Then, it would be relatively easy to insert spy equipment and eavesdrop on phone calls and data transmissions from phones, or to incorporate kill-switches into these grids, so if China ever needed to, for instance, distract the US and its allies while they invaded Taiwan, they could just push a button, kill the US telecommunications grid, and that would buy them some time and fog of war to do what they wanted to do without immediate repercussions; and undoing a successful invasion would be a million times more difficult than stepping in while it’s happening to prevent it.As of 2024, Huawei still controlled about a third of the global 5G market. It controlled about 27.5% back in 2019, the year it was banned in the US and in many US allied nations, so while it’s possible they could have grown even bigger than that had the ban not been implemented, they still grew following its implementation.Chinese companies currently control about 60% of the US router market, and it’s likely the local, US market will shift, reorienting toward US makers over the next decade or so. But it’s possible these Chinese companies will grow their global footprint even further, as previous