The UK Governmtn’s National Security Cyber Centre recently released this paper on the planned contact tracing App for Covid-19.
First of all, I would like to say that I know that a contact-tracing app endorsed by the UK’s spy agency is certainly not private, at all.
Nevertheless, the paper goes into a fair amount of detail on the technicalities of the App but as I am not very well versed netsec i was hoping that someone might be able to point out if there are any glaring issues with the application as stated in the paper.
Also, I intuitvely understand why a decentralised system would be better for privacy. However, I don’t have the technological knowledge to understand why that is the case, or refute what is set out in the aforemnetioned paper as the problems of a decentralised system. I was hoping someone might be able to explain that to me since i know most european countries have gone with a decentralised system instead but I don’t understand why.
Thanks in advance!