Nintendo has been ramping up its anti-piracy measures ever since a Switch hacking team discovered a vulnerability that allow people to run arbitrary code on all current consoles. In fact, it already gave the Switch hardware an overhaul to get rid of the flaw. While the updated console (codenamed "Mariko") hasn't hit the market yet, the gaming giant might have released patched units in the interim. According to Switch hardware hacker SciresM, some retail units already come with Nvidia Tegra chips that are protected against the security exploit called fusée gelée or "frozen rocket."
Source: SciresM (Twitter)