11:37:11pjbyou can imagine than for stuff running on the same hardware, anything is trivial.
11:38:05frodefpjb: that's a thing, too, in data-centers?
11:38:51pjbfrodef: I'm sure those exploits can be used in data-center to spy to other servers…
11:39:30pjbLook at that for example: https://www.securityweek.com/ram-generated-wi-fi-signals-allow-data-exfiltration-air-gapped-systems
11:39:39frodefare there other ways to extract information that timing?
11:40:10pjbThere's a GSM version: https://dl.acm.org/doi/10.5555/2831143.2831197
11:44:29frodefpjb: That seems like a force that could be used for good: Implement wifi without wifi hardware :)
11:59:22pjbfrodef: theorically. But in practice, there's energy management problems. It's good when you have receiver hardware that can detect low power (RAM level) wifi…
12:00:47pjbThe thing in this use case, is to be able to transmit data even weakly, using any (limited) resource at hand, but it doesn't restrict the resources you can use to listen to it. You can have a truck of instruments in the road near the building…
12:01:38frodefpjb: so you can have a special device in your pocket, run your "special program" on location, and have everything downloading without plugging in a pendrive or anything. Or a truck outside..