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ng55QPSK | 3 years ago | on: Has the CIA Done More Harm Than Good?

At home we use a phrase from an interview with a EU politician that was done BEFORE the ukraine war and asked about the US/CIA warnings of an upcomming war and he said "Always remember, the CIA was the agency that told US presidents for years the vietnam war would be over next week" ...

ng55QPSK | 3 years ago | on: Poorly configured cloud technology makes 5G networks worryingly hackable

So you have ID41323 and ID53242 over night (or at daytime) in the same location, how do you map this back to names?

It's not impossible, but you need data that exists (like house-to-name mapping) from databases outside of the reach of the operators.

And the location information in the network is only as precise as needed. Most of the time this is a cell area, so 100s of m2.

ng55QPSK | 3 years ago | on: Poorly configured cloud technology makes 5G networks worryingly hackable

i'd recommend to watch the presentation https://media.ccc.de/v/mch2022-273-openran-5g-hacking-just-g... in which it's made clearer, that the telco part wasn't the issue. 5G systems can be operated rather secure, but operators or subcontractors that build these cloud installation have strange ideas about trust and config.

On the topic of 'telcos don't take security seriously', CoryD recently wrote some wise words in https://pluralistic.net/2022/08/12/regulatory-uncapture/#con...

"The public-private surveillance partnership is very old, and it's key to monopolists' strategy. It took 69 years to break up AT&T, because every time trustbusters came close, America's cops and spies and military would spring into action, insisting that the Bell System was America's "national champion," needed to defend it from foreign enemies. The Pentagon rescued Ma Bell from breakup in the 50s by claiming that the Korean War couldn't be won without AT&T's help"

I know some people in designing 5G, that were rather frustrated by outside influence on "can we have another unsafe option also, just in case we need it?"

ng55QPSK | 3 years ago | on: The importance of exponentially more computing power

"weather models" "better" - how do you actually rate weather models? Exact prediction or prediction of outliers like catastrophic events? Is there more value in knowing tomorrow's temperature to be 24C or a thunderstorm happening at 15:00 ?

ng55QPSK | 3 years ago | on: The importance of exponentially more computing power

Just wrong. The more correct input you have and the more correct your model of the real world is, the more accurate your predictions are.

We already see helpless activities to be better with AI (and a lot of computing) then classical optimisation theory (think solving PDEs) and failing.

Just more computing power will not help (except people whose business model relies on selling you computing power)

ng55QPSK | 3 years ago | on: Detecting Fake 4G Base Stations in Real Time (2020) [pdf]

as explained in the pdf: There is a part of the connection setup, that will happen before any mutual authentification: The telephone offers the IMEI/IMSI to get an initial connection. The network learns this number and it's the counterpart of a MAC address in Wifi networks.

ng55QPSK | 3 years ago | on: Write documentation first, then build

"You can't see all of the issues and all of the problems and how your design really doesn't work until you actually try to build it." - assuming you build something, nobody has tried to build before.

In the 95% of other cases, use a library solutions, read about solutions that exist, try to learn from similar solutions. Don't reinvent the wheel.

It's not wrong to do experiments, learn from that and apply the know-how to production code.

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