thornjm

9 ms·

31.
by thornjm 6y ago
I’m very much not an expert. I think the state of the art for measuring brain activity is the functional MRI. fMRIs have limits on their spatial, temporal and ‘activity’ resolution. I think they also measure ‘only’ blood flow and not electr
32.
by thornjm 6y ago
A bunch of app suggestions for reading reddit and watching youtube is terrible security advice and borderline dangerous. People should refrain from providing any (pseudo) security advice unless they know what they are talking about. There m
33.
by thornjm 6y ago
I actually find the intel manual on SIB bytes quite straightforward and useful. Section 2.1.5 and specifically tables 2-2 and 2-3 show really quite simply all possible values of the ModRM byte and their operands [1]. It can be quite a good
34.
by thornjm 6y ago
I wonder how hard it would be to try handle the segfault and allocate stack space on demand for these “threads”. Almost certainly stupid but a fun experiment to see if its possible... EDIT: found a nice example of this here: https:/&#
35.
by thornjm 6y ago
(Med student here with only limited knowledge). This is correct. The active form of Vitamin D (Calcitriol) can be both helpful and harmful to bone health. I think the mechanism is not fully understood but in short doses it stimulates bone g
36.
by thornjm 7y ago
Med student here - so I know some of the theory only. The most relevant "law" is Fick's Law of Diffusion ( https://d2jmvrsizmvf4x.cloudfront.net/CTU792sKR2evT2ezizQp_f... ). Doctors can increase diffusion by in
37.
by thornjm 7y ago
Avoid any low quality website willing to sell redirection or iframe based online advertising (e.g. online television, pornography websites). These can be a vector for exploitation attempts.
38.
by thornjm 7y ago
Persistent malware is more expensive and has higher risk of compromise, and so it is used sparingly. A regular restart is a surprisingly good defence technique on an iPhone.
39.
by thornjm 7y ago
In the past a USB or WIFI/Bluetooth attack would have got kernel mode execution then used the secure enclave to brute force credentials. I think what makes this statement interesting is that Apple recently introduced anti-replay counte
40.
by thornjm 8y ago
- The break down of fats for energy is called beta-oxidation and is not performed by brain cells. - The brain relies on the liver to produce ketone bodies instead. - Our cells break down carbohydrates, then proteins and then fats A diet hig
41.
by thornjm 8y ago
Med Student here so I know just about nothing... We’ve monitored hearts for a long time. It is common for a heart to skip a beat or maybe double a beat occasionally (a stethoscope on your own heart for 30 mins would demonstrate that). I don
42.
by thornjm 8y ago
A few reasons I can think of: 1. Collaborative. 2. supporting classified proprietary architectures (think missile chips or something) 3. The intermediate representation (architecture independent representation of code) can be integrated in
43.
by thornjm 8y ago
Some context for those unfamiliar; Huawei and the UK government setup the “Huawei Cyber Security Evaluation Centre” to review Huawei device inner workings and updates before deploying in the UK. Despite this, it sounds like the UK is still
44.
by thornjm 8y ago
It is probably just a consequence of Project Zero being made up of experts on different topics. The iOS experts are quite prolific.
45.
by thornjm 8y ago
The world is working on it: https://csrc.nist.gov/projects/post-quantum-cryptography You can see round one submissions on the left.
46.
by thornjm 8y ago
Complete guess but they might use multiple F/A-18s, each with their own boom in a specific formation, to mimic the non-combining booms of the X-59?
47.
by thornjm 8y ago
This is probably too late, but my favourite CS lecturer is Richard Buckland and he is somewhat famous locally for being an excellent teacher. He has some lectures on Youtube that could serve as some inspiration: https://www.youtu
48.
by thornjm 10y ago
I was actually thinking along the lines of fuzzing for exploit development. You want a unique bug that will last a long time. In which case, your fuzzing techniques are a trade secret. A lot of fuzzing advances take place behind closed door
49.
by thornjm 10y ago
I would have a look at Project Zero. P.S. I think many governments and corporations would keep their fuzzing techniques quite secret. You don't want to do the same fuzzing as anyone else.
50.
by thornjm 12y ago
Hopefully someone more knowledgable can weigh in, but as I understand the key stored on a 3G sim is more useful for authentication/identification rather than encryption. 3G/4G somehow uses random, short lived keys for encrypted co
51.
by thornjm 12y ago
Cleaning up a modern malware infection is quite a big task. You can't immediately wipe it off a single computer because you will be playing whack-a-mole forever. You have to carefully monitor and learn everything you can about the mali
52.
by thornjm 12y ago
Anyone have a neat explanation for how it works?
53.
by thornjm 12y ago
Some very knowledgable iOS security people have told me how hard it is to break iOS. You need quite a few chained exploits to do anything meaningful. Browsers are pretty much the only things with Read/Write/Execute memory. Securit
54.
by thornjm 13y ago
Perhaps because we reaching a point where our eyes can longer perceive the individual pixels that we really have reached maximum resolution. Is there any benefit from higher resolution displays?
55.
by thornjm 13y ago
I would not trust everything the article reports. Slightly off topic, but for those unfamiliar with news.com.au it is a low quality sensationalist outlet who frequently post link bait material. Some of their stories are shared from their Ne
56.
by thornjm 13y ago
There are a number of suggestions to remove the cables altogether and have the car power itself, but would it not be easier to have the cables removed and still power it through the building? Something like electromagnets, rail gun style?
57.
by thornjm 13y ago
Free divers actually avoid the decompression problem altogether. They breathe in air at surface pressure, it compresses as they dive down, and uncompresses to the same size as they rise up. The air cannot bubble out of their blood. The prob
58.
by thornjm 13y ago
Reading things like I can't help but understand why some groups of people can hate America. (I am Australian)
59.
by thornjm 14y ago
I thought it was interesting how the images used are not hosted anywhere. Instead the source contains a base64 encoded copy of the image.
60.
by thornjm 14y ago
Could someone please explain how this line: "(* p=* p) & (* q=* q);" "inform[s] the compiler that f2() will never be called with aliasing arguments." Thanks

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