Regarding 28nm, plenty of chips could still use 28nm, dedicated processors(e.g. quite a few camera processors should still be on 28nm), microcomputers of home appliances...in fact in the scope of phones everything should pass except the RAM, flash, the SoC and of course analogs, some of which are on specialized processes.
Quote from: Defcon on October 12, 2020, 17:38:44
Quote from: toven on October 12, 2020, 06:14:45
So 28nm and above are not security risk concern?
The security concerns were related to 5G equipment provided by Huawei 'Telecommunications', which have been found to be quite valid - considering that countries that have not spoken against Huawei, have cleverly banned it anyway like Canada , France , Japan , India and most recently Britain too. Its just the US has been the most outspoken against Huawei & China, other countries have seen the dangers & threat of Huawei too and slyly sidelined it.
Now, coming back to the "28 nm node" issue, those TSMC sanctions were put because of a different crime by Huawei - Selling prohibited technology to Islamic Repbulic of Iran for malicious purposes, despite the sanctions & also using the advanced node to develop weapons technology for military purposes using US tech. Also, all the theft by Huawei is a big reason too. I leave you with this .
Ha, don't forget Sweden who's under flak from the Chinese Foreign Ministry for this just earlier today!
You hit the nail on the head that many countries see this as an issue, just that they try to keep a low profile to avoid Chinese retaliation, which can be grossly disproportional because that's the way the current Chinese system works, to the whims of a handful of Party elites. The US just added a few Chinese state-associated media to a list of foreign actors, which only requires more registration of their activities, and does not interfere with their reportage, while China responds by expelling US reporters, talk about "fair". lol, the US explanation was pretty accurate, "China will do what it's gonna do", and US actions are just an excuse.