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Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

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Re: Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

#71

Post by daemonologist »

XorNot wrote: post #49
yread wrote: post #39

Earlier quoted context omitted.

Isnt the weakness here that there was nothing encrypting the actual key? On a laptop luks key stored in a tpm would usually be encrypted using your passphrase

The NTSB report noted that if the TrustZone secure enclave system was being used, then yeah this data would be toast. But it speaks more to Oceangstrs negligence that this situation even existed: why wasn't any potential encryption keys escrowed ashore to ensure they could be recovered later? This shouldn't have even been an issue.

It seems the manufacturer of the camera didn't even know (at least in the part of the org communicating with the NTSB) that their storage was encrypted. In any case the media recovered were from testing/non-dive environments, and during an actual dive footage would presumably be recorded directly to the onboard computers (which were irrecoverably destroyed).

Oceangate should take the blame for a lot of things but probably not this.

Re: Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

#72

Post by trenchpilgrim »

nxobject wrote: post #52
RandomBK wrote: post #48

I see a lot of discussion in this thread stemming from some confusion+not reading the actual report[0]. Some key points: 1. The Camera+Card was encased in a separate enclosure made of titanium+sapphire, and did not seem to be exposed to extreme pressures. 2. The encryption was done via a variant of LUKS/dm-crypt, with the key stored on the NVRAM of a chip (Edited; not in TrustZone). 3. The recovery was done by transp…

If the encryption was that easy to bypass, was it worth it at all?

Stealing a camera is much harder than stealing an SD card out of a camera.

Re: Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

#73

Post by withinboredom »

dmix wrote: post #43

Since not everyone reads articles: > Somewhat disappointingly, the images and videos shared in the report were taken in the vicinity of the ROV shop at the Marine Institute, also in Newfoundland. The location was the logistical base for Titanic dive missions. No deep-sea shenanigans around the Titanic wreck were revealed.

Wouldn’t it have been streaming it to disk without creating the file? Kinda like how if your camera dies while it’s recording, there is no recording. You have to manually recreate the file.

Re: Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

#74

Post by Aurornis »

amelius wrote: post #10
gruez wrote: post #8

Earlier quoted context omitted.

It's a solid piece of silicon encased in epoxy, so there's nothing really to get crushed. Contrast this to something like a cellphone that's made of hundreds of separate parts and has void space that will get crushed.

Why isn't a cellphone filled with epoxy?

The heavy components on a cell phone PCB are reinforced with spot applications of adhesive to the PCB.

Filling the entire cell phone with epoxy wouldn’t help. The parts that break on drops are external like the screen.

This SD card was enclosed in a sealed metal container so it wasn’t exposed to water.

Re: Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

#75

Post by Y_Y »

trenchpilgrim wrote: post #72
nxobject wrote: post #52

Earlier quoted context omitted.

If the encryption was that easy to bypass, was it worth it at all?

Stealing a camera is much harder than stealing an SD card out of a camera.

Citation needed. It might be slightly easier, but most cases where you can get part of the camera, you can get the whole camera. This isn't a little point-and-click with a handy spring-loaded slot either.

Re: Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

#76

Post by trenchpilgrim »

Y_Y wrote: post #75
trenchpilgrim wrote: post #72

Earlier quoted context omitted.

Stealing a camera is much harder than stealing an SD card out of a camera.

Citation needed. It might be slightly easier, but most cases where you can get part of the camera, you can get the whole camera. This isn't a little point-and-click with a handy spring-loaded slot either.

Yeah but the Camera's owner is much more likely to notice "my camera is missing" than "the SD card is blank for some reason... the SD card must have failed"

EDIT: The linked PDF has a photo, the camera literally opens up to access the SD card.

Re: Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

#77

Post by [deleted] »

firesteelrain wrote: post #59
squigz wrote: post #35

Earlier quoted context omitted.

Firefox on mobile supports uBlock Origin

On iOS, every browser is required by Apple to use WebKit. I just tried it again myself and FireFox on iPhone has no ublock Origin add on possibility. Firefox Focus does work as an alternative. Apple created a special system-level API for Safari Content Blockers. Apps like Firefox Focus, AdGuard, 1Blocker, Wipr can register filtering rules with Safari using this API. That’s why Focus can block ads/trackers inside Safa…

[deleted]

Re: Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

#78

Post by amelius »

estimator7292 wrote: post #58
amelius wrote: post #40

Earlier quoted context omitted.

There is very little empty space in a phone, so conformal coating is practically the same as filling it. Anyway, I wasn't disagreeing, just reasoning a bit further.

No, conformal coating and potting are extremely different things done for different reasons.

I'm not talking about which methods are being used, I'm talking about which methods could be used. Further, potting, where you let the epoxy drip off, gives you a conformal coating.

Re: Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

#79

Post by dotancohen »

NuclearPM wrote: post #54
dotancohen wrote: post #26

Earlier quoted context omitted.

> Why isn't a cellphone filled with epoxy? Added cost and weight are two things that would put off consumers. The phone would also be neigh irreparable, but consumers don't seem to care for that other than replacing their screen.

Neigh?

I didn't notice that, I was dictating to Gboard. If that's what was heard, then I should probably go eat some hay and get my tail brushed.

Re: Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site

#80

Post by phire »

nxobject wrote: post #52
RandomBK wrote: post #48

I see a lot of discussion in this thread stemming from some confusion+not reading the actual report[0]. Some key points: 1. The Camera+Card was encased in a separate enclosure made of titanium+sapphire, and did not seem to be exposed to extreme pressures. 2. The encryption was done via a variant of LUKS/dm-crypt, with the key stored on the NVRAM of a chip (Edited; not in TrustZone). 3. The recovery was done by transp…

If the encryption was that easy to bypass, was it worth it at all?

The manufacturer didn’t even know encryption was enabled, because as long as the camera was working, it would just provide all files over USB without any encryption.

It was basically enabled by accident, and the only thing it prevented was recovery of files directly from the SD card when the camera was damaged.

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