Post #664
203
Look ma, no PCB!
https://wz.ax/see-through-arduino-aiowbbwk
https://wz.ax/see-through-arduino-aiowbbwk
Channel Public Channel
LI Linkstream
@linkstream
Various links I find interesting. Mostly hardcore tech :) // by @oleksandr_now. See @notatky for the personal stuff
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Post #663
219
CROSStalk — one more data-leak vulnerability in Intel CPUs, this time working across physical cores and SGX (secure enclaves), especially useful for leaking encryption keys
https://wz.ax/intel-crosstalk-dpkyaoun
VUSec CROSSTalk - VUSec For the first time, we show that speculative execution enables attackers to leak sensitive information also across cores on many Intel CPUs, bypassing all the existing intra-core mitigations against prior speculative (or transient) execution attacks such… https://wz.ax/intel-crosstalk-dpkyaoun
Post #662
214
Gorgeous automatic diagramming (still WIP but, but!)
https://wz.ax/penrose.ink-gorgeous-automatic-diagramming-beactfyd
https://wz.ax/penrose.ink-gorgeous-automatic-diagramming-beactfyd
Post #661
219
Universal Relation between Corrections to Entropy and Extremality
> Perturbative corrections to general relativity alter the expressions for both the entropy of black holes and
their extremality bounds. We prove a universal relation between the leading corrections to these quantities.
The derivation is purely thermodynamic and the result also applies beyond the realm of gravitational
systems.
https://wz.ax/10.1103/PhysRevLett.124.101103/sfokuvfd
> Perturbative corrections to general relativity alter the expressions for both the entropy of black holes and
their extremality bounds. We prove a universal relation between the leading corrections to these quantities.
The derivation is purely thermodynamic and the result also applies beyond the realm of gravitational
systems.
https://wz.ax/10.1103/PhysRevLett.124.101103/sfokuvfd
Post #660
237
an underappreciated piece of history
https://wz.ax/dshr-death-of-corporate-research-labs
https://wz.ax/dshr-death-of-corporate-research-labs
Post #659
268
Post #658
260
whoa, potentially a new chip tech which looks practical this time!
https://www.nature.com/articles/s41467-020-16105-y
https://www.nature.com/articles/s41467-020-16105-y
Post #657
220
ASAP: As Static As Possible memory management (Proust'17)
"Long story short, this is an attempt to see if we really can have unrestrictive compile-time garbage collection."
#to_read_later via @olegkovalov
https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-908.pdf
"Long story short, this is an attempt to see if we really can have unrestrictive compile-time garbage collection."
#to_read_later via @olegkovalov
https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-908.pdf
Post #656
240
Post #655
226
XML is the gift that keeps on giving!
https://wojciechregula.blog/post/stealing-your-sms-messages-with-ios-0day/
wojciechregula.blog Stealing your SMS messages with iOS 0day This is a special post because I fully based on another researcher, s1guza’s 0day. All of this story began from the following tweet:
Siguza told us that his 0day was patched in the iOS 13.5 beta3. So this is actually a sandbox escape 0day for the newest,… https://wojciechregula.blog/post/stealing-your-sms-messages-with-ios-0day/
Post #654
243
Finally, temporal dimension comes to the mainstream machine learning
https://link.medium.com/9H82wmMe25
https://link.medium.com/9H82wmMe25
Post #653
230
Post #652
240
TLDR: CME testing negative prices for commodity futures contracts.
I wonder if this will eventually come to equities as well. Is there a niche where it makes economic sense? Public unlimited companies maybe?
https://www.cmegroup.com/notices/clearing/2020/04/Chadv20-160.html#pageNumber=1 #finance
Cmegroup Testing Opportunities in CME's Use the search tool to access all Notices for CME Group exchanges, CME, CBOT, NYMEX, and COMEX. I wonder if this will eventually come to equities as well. Is there a niche where it makes economic sense? Public unlimited companies maybe?
https://www.cmegroup.com/notices/clearing/2020/04/Chadv20-160.html#pageNumber=1 #finance
Post #651
227
more ancient stuff: https://www.youtube.com/watch?v=2XLZ4Z8LpEE (skip to 10:20 for action) via @kurumpa
comments > Reminds me of something I read about the Three Mile Island incident: the computer was printing out alarms on a paper log (as well as showing them via more immediate means) but there were so many events and the printer was so slow that it was several minutes before the significant event appeared on paper
YouTube Using a 1930 Teletype as a Linux Terminal Commenters requested that we use our restored vintage 1930 Model 15 Teletype as a terminal for Linux. Hooking up a 5-bit mechanical contraption that predates computers by eons to a modern OS, even one that is terminal friendly, is not without some challenges.… comments > Reminds me of something I read about the Three Mile Island incident: the computer was printing out alarms on a paper log (as well as showing them via more immediate means) but there were so many events and the printer was so slow that it was several minutes before the significant event appeared on paper
Post #650
199
this is gotta be a year of 'reality is stranger than fiction'. I discussed COBOL on AWS Lambda for laughs just weeks ago, and now this:
https://blog.cloudflare.com/cloudflare-workers-now-support-cobol/
The Cloudflare Blog Cloudflare Workers Now Support COBOL COBOL is often a source of amusement for programmers because it is seen as old, verbose, clunky, and difficult to maintain. COBOL can now be used to write code for Cloudflare’s serverless platform Workers. https://blog.cloudflare.com/cloudflare-workers-now-support-cobol/
Post #649
178
Post #648
335
aww, AES-ECB in 2020! niiiiice! (TLDR: if it's really ECB - get yourself some traffic dumps and have fun, you can decrypt that at home!)
https://citizenlab.ca/2020/04/move-fast-roll-your-own-crypto-a-quick-look-at-the-confidentiality-of-zoom-meetings/
https://citizenlab.ca/2020/04/move-fast-roll-your-own-crypto-a-quick-look-at-the-confidentiality-of-zoom-meetings/
Post #647
193
hmm, I think I know what I want to learn and experiment with, besides FPGAs...
Deep Molecular Programming:
A Natural Implementation of Binary-Weight ReLU Neural Networks
> Embedding computation in molecular contexts incompatible with traditional electronics is expected to have wide ranging impact in synthetic biology, medicine, nanofabrication and other fields. A key remaining challenge lies in developing programming paradigms for molecular computation that are well-aligned with the underlying chemical hardware and do not attempt to shoehorn ill-fitting electronics paradigms.
https://arxiv.org/abs/2003.13720
Deep Molecular Programming:
A Natural Implementation of Binary-Weight ReLU Neural Networks
> Embedding computation in molecular contexts incompatible with traditional electronics is expected to have wide ranging impact in synthetic biology, medicine, nanofabrication and other fields. A key remaining challenge lies in developing programming paradigms for molecular computation that are well-aligned with the underlying chemical hardware and do not attempt to shoehorn ill-fitting electronics paradigms.
https://arxiv.org/abs/2003.13720
Post #646
261
I rarely consider videos a preferred format for lectures, but... this one is great
https://www.youtube.com/watch?v=h_7d-m1ehoY&feature=youtu.be&t=3m
YouTube #170: Basics of IQ Signals and IQ modulation & demodulation - A tutorial This video presents an introductory tutorial on IQ signals - their definition, and some of the ways that they are used to both create / generate modulated RF signals, and demodulate / analyze RF signals. IQ signals are most often used in the transmit and… https://www.youtube.com/watch?v=h_7d-m1ehoY&feature=youtu.be&t=3m
Post #645
283
correlations are not causations, but removing (or maintaining) correlations can be helpful
https://blog.acolyer.org/2020/03/13/correlation-x-2/
https://blog.acolyer.org/2020/03/13/correlation-x-2/