LG washing machine sending 3.7GB of data a day

Post by gravypod » Sun, Jan 14, 2024, 2:20 AM UTC

hsuduebc2 wrote: post #163

kragen wrote: post #149

Earlier quoted context omitted.

a program running on a 480 megahertz microcontroller can quite reasonably crash a million times a second; even a single 80-character error log line would be 80 megabytes per second or 7 terabytes per day. and it would be reasonable to record more telemetry from a crash than a single line

Really megabytes or it's just a typo? If so. How 80 characters could possibly generate so much data?

    freq = 480 megahertz                            // 480000000 Hz
    size = 80 * 1 byte                              // 80 bytes
    cycles_per_write = 400                          // 100 to print, 300 to fail
    writes_per_sec = freq / cycles_per_write        // 120mHz
    duration = 24 hr
    (writes_per_sec * size * duration) to terabytes // 8.2 tb

Post by kragen » Sun, Jan 14, 2024, 2:31 AM UTC

jacquesm wrote: post #172

kragen wrote: post #169

Earlier quoted context omitted.

it's not a tumor. i mean a typo. 80 bytes multiplied by one million times per second equals 80 million bytes (also known as 80 megabytes) per second

Uplinks are usually somewhat restricted.

Post by Kranar » Sun, Jan 14, 2024, 2:40 AM UTC

ParetoOptimal wrote: post #19

monospaced wrote: post #2

> In a follow-up post a day after his initial Tweet, Johnie noted “inaccuracy in the ASUS router tool.” Other LG smart washing machine users showed device data use from their apps. It turns out that these appliances more typically use less than 1MB per day.

Other users having low data usage doesn't prove they also have low usage? Are people so uncomfortable saying "we don't know" that they use such loose reasoning to "get the answer"? I'll re-read the article/tweets, maybe I missed something.

Post by cyclotron3k » Sun, Jan 14, 2024, 2:46 AM UTC

kiririn wrote: post #147

cyclotron3k wrote: post #137

Earlier quoted context omitted.

Most people in the reddit thread I saw seemed to assume botnet. I'm not convinced though. That would assume that the washing machine was opening an external port on the user's router, which seems unlikely. I looked up a manual for one of the the washers which has the "ThinQ" feature and there's no mention of UPnP.

Don’t need an open port to be a useful part of a botnet

Post by svnt » Sun, Jan 14, 2024, 2:54 AM UTC

kragen wrote: post #149

jacquesm wrote: post #118

Earlier quoted context omitted.

Does it matter? It shouldn't be hogging bandwidth like this, that's a failure by itself regardless of whether there another failure state at play. Also, I'd have to question any washing machine that can generate 'massive amounts of error logs'. 3.7 G / Day is an insane amount of data.

a program running on a 480 megahertz microcontroller can quite reasonably crash a million times a second; even a single 80-character error log line would be 80 megabytes per second or 7 terabytes per day. and it would be reasonable to record more telemetry from a crash than a single line