Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Your WiFi Can See You

mrereports.substack.com

Post reply on HN
Print view View original

81–90 of 93 posts

Re: Your WiFi Can See You

#81

Post by psd1 »

nomilk wrote: post #43
srejk wrote: post #38

Earlier quoted context omitted.

Look up TR-069. Always use your ISP-supplied router in bridge/modem mode only.

IIUC: - 'TR-069' is the name of a protocol by which (most) ISPs operate - It gives ISPs the rights/ability to interact with your devices remotely (under the guise of maintenance and remote troubleshooting) - This isn't something that's going to happen one day far in the future; it already applies to most(/all?) routers currently in use in countries whose ISPs abide by the protocol So ISPs can already see inside custo…

Fucking TR-069. BT used to reboot my router every day at 03:00, right when I was trying to read reddit.

To your point. ISPs send out the shittiest cheapest routers. I doubt they are physically capable of imaging to any reasonable degree. If you pay extra for a higher-grade WiFi router in your Internet package, then maybe.

Best to own your own device. I presume such a thing would not accept TR-069 commands, but that is worth checking.

Re: Your WiFi Can See You

#83

Post by red-iron-pine »

dang wrote: post #65

Recent and related: WiFi can read through walls - https://news.ycombinator.com/item?id=37469920 - Sept 2023 (171 comments)

more like "Wifi can read big metal Home Depot sign letters through walls from reasonably close"

good proof of concept tho, and a cool video

Re: Your WiFi Can See You

#84

Post by yoru-sulfur »

system2 wrote: post #28
yoru-sulfur wrote: post #8

A number of years ago I worked for a company that developed a home security product using this kind of tech: https://www.cognitivesystems.com/

Does it work as advertised?

I haven't worked there for years, so not sure what has changed since I was there but at least at the time it was decent. It could reliably detect movement, but was getting triggered by pets and such. They were working on solutions to that when I left.

Re: Your WiFi Can See You

#85

Post by red-iron-pine »

t0bia_s wrote: post #68
matheusmoreira wrote: post #26

Earlier quoted context omitted.

Even if you committed a crime, police should not be able to find out about it through illegal means. Police should not be allowed to run SIGINT operations on citizens. They should not even have that capability. Why is it normal for police to have these literal spy movie technologies?

Because people generally wants rulers above them. It is a state doctrine that tells you it is for your protection. But if someone stole your bike, usually police wont find it.

the police absolutely found my bike. it had a tracker on it and very distinctive paint.

if you go to them and say "my bike is gone" they'll ask what details you can provide. if the answer is "none" then they're not going to try that hard. hundreds of other missing goods cases too, and many of those could be more than your bike, and have actual leads.

Re: Your WiFi Can See You

#86

Post by scrps »

cperciva wrote: post #70
scrps wrote: post #63

Earlier quoted context omitted.

Here is where it gets interesting... No mesh, it is lath and plaster. I've had to cut into it in a few rooms and if there is a mesh I have yet to see it. I am wondering what was used in the plaster at this point.

Huh. I know lime plaster can contain significant levels of iron impurities, but I think even in the worst case those would be low enough to have an insignificant effect. Now I'm really curious too.

This is an interesting read:

https://blog.ibwave.com/a-closer-look-at-attenuation-across-...

I am tempted to disolve a bit of the plaster and run a conductivity test on it for fun. It is like living in a leaky faraday cage.

Re: Your WiFi Can See You

#87

Post by gloosx »

SergeAx wrote: post #78
gloosx wrote: post #72

I don't understand, why the author's concern is focused around surveillance through wifi. The routers are private devices, so if secured properly, what kind of backdoor a third party could use to take imagery of your house insides? Law enforcement for decades has used commercial cellular networks to spy on people, and with the modern 5g technologies these surveillance suites are very well developed and able to see EV…

Amazon Alexa, Google Nest. BTW, every smatphone has a WiFi.

every smartphone can report your exact location anyway, for me 5g is a much bigger privacy concern than wifi could ever be.

Re: Your WiFi Can See You

#88

Post by jxj »

est wrote: post #52
newhouseb wrote: post #32

I'm a little skeptical of the paper in question: https://arxiv.org/pdf/2301.00250.pdf If you look at the training and test set info: > We report results on two protocols: (1) Same layout: We train on the training set in all 16 spatial layouts, and test on remaining frames. Following [31], we randomly select 80% of the samples to be our training set, and the rest to be our testing set. The training and testing samples…

Also > It should be noted that many WiFi routers, such as TP-Link AC1750, come with 3 antennas, so our method only requires 2 of these routers. > WiFi-based perception is based on the Channel-state-information (CSI) that represents the ratio between the transmitted signal wave and the received signal wave. The CSIs are complex decimal sequences that do not have spatial correspondence to spatial locations AFAIK, acces…

We do even further. If we use openwifi as a router in home, it can fuzz the CSI and destroy those sensing method: https://github.com/open-sdr/openwifi/blob/master/doc/app_not...

Re: Your WiFi Can See You

#89

Post by SergeAx »

gloosx wrote: post #87
SergeAx wrote: post #78

Earlier quoted context omitted.

Amazon Alexa, Google Nest. BTW, every smatphone has a WiFi.

every smartphone can report your exact location anyway, for me 5g is a much bigger privacy concern than wifi could ever be.

Smartphone cannot report your location inside the room with 10cm precision. Or so we thought not long ago.

Re: Your WiFi Can See You

#90

Post by gloosx »

SergeAx wrote: post #89
gloosx wrote: post #87

Earlier quoted context omitted.

every smartphone can report your exact location anyway, for me 5g is a much bigger privacy concern than wifi could ever be.

Smartphone cannot report your location inside the room with 10cm precision. Or so we thought not long ago.

This year technology around 5g allows indoor tracking with <1m precision. A lot of work is ongoing to adopt this massively, as the demand is colossal.
Post reply on HN