Estoy preparando una entrada un poco elaborada sobre semiótica y prueba informática.
Unusual quantum states may shake up quantum computing. Via arstechnica.
may 03 2010
The era of platter-free enterprises
We’ve been covering the progression of SandForce for over a year now, creator of smart SSD processors that extend the life of flash storage by better spreading writes across them, boosting performance and reliability along the way. This, according to the company, makes them reliable enough for enterprise use, and IBM has added its vote of support, configuring a 9189 Power 780 server with 56 177GB SSDs (10.5TB in all) sitting behind SandForce’s SF-1500 processor. That combination, when running the TPC-C benchmark, delivered a performance of 150,000 transactions per minute per CPU core. That’s 50 percent higher (per-core) than other entries in the TPC-C benchmark — and considerably cheaper, too. IBM’s configuration is set to be available around October of this year, perhaps ushering in a new era of the platter-free enterprise.”
Find the benchmark here.
Via Engadget, via StorageReview.
abr 17 2010
“La fase de instrucción: esa gran desconocida”
Aunque he actuado en muchos casos en vía penal, la posición del perito no es la mejor para tomar consciencia del contexto que envuelve la fase de instrucción y en general para comprender el proceso penal sin una mínima guía.
Estoy asistiendo al “Curs Bàsic de Pràctica Processal Penal” del ICAB.
Hasta ahora las sesiones son amenas y estoy aprendiendo mucho (señal de mi ignorancia anterior).
Me he animado a escribir al respecto después de las excelentes sesiones de ayer de Núria Martí Garcia-Milà y Inés Portabella Cornet, respecto a la fase de instrucción y fase intermedia respectivamente. Ambas sesiones muy sinceras, enfocadas y prácticas.
Con un poco de suerte no tendré que escribir un libro que tenía en mente: “La fase de instrucción: esa gran desconocida” :-)
mar 24 2010
Robert M. White, RIP
Major-general Robert M. White, the first person to fly a winged aircraft at four, five and six times the speed of sound and the first to reach the space by the same means, died last March 17th at the age of 85.
When I was a kid I spend many hours reading my elder brother’s book of planes. Man, X-15 was the speed itself.
Find this obituary at Los Angeles Times.
Via gizmodo.
I’d like to remember also Michael J. Adams, who died in 1967 flying another X-15 beast.
mar 07 2010
Felicitats Toni!
Avui el meu amic Toni ha completat la seva primera marató, cursa de fons per excel·lència amb els seus 42 kilòmetres i 195 metres.
Tot i que el seu origen prové de la llegendària gesta del soldat missatger Filípides, que es diu que va recórrer la distància de la Batalla de Marató a Atenes per anunciar la victòria atenenca sobre els Perses, la distància actual es va determinar als Jocs Olímpics de Londres de 1908.
Trobo que és un exemple de que el compromís i l’esforç personal donen el seu fruit.
Felicitats Toni!
dic 31 2009
image, mount, calculate hashes: examples
I wish you all the best for 2010!
I’ve been working in an article related to serving search warrants and I thought the following examples may be useful. They cover imaging, mounting imaged drives and calculating hashes for every file in a drive.
CASE_ID identifies the case, LOCATION_ID identifies the location where the media was seized, MEDIA_ID identifies the media device and PARTITION_ID identifies each partition into the media.
Image
This is an example for dcfldd imaging. The command calculates the MD5 hash on the fly.
See here for options’ reference.
ubuntu@ubuntu:~$ date; sudo dcfldd if=/dev/sdc of=/media/disk/CASE_ID/LOCATION_ID/MEDIA_ID.dd conv=sync,noerror hashwindow=0 hashlog=MEDIA_ID_md5.txt; date
Thu Nov 16 13:18:22 UTC 2009
4883968 blocks (152624Mb) written.
4884090+1 records in
4884091+0 records outThu Nov 16 15:26:34 UTC 2009
dic 15 2009
COFEE vs. DECAF
COFEE is a set of tools packaged into an USB drive oriented to ease the task of first strike computer evidence collection distributed by Microsoft through INTERPOL to law enforcement agencies worldwide.
It slowly made its way to the public, getting widespread when last month showed up on the web through Cryptome.
In an exercise of posing, a group of “hackers” two average joes have released antiforensics software called DECAF dedicated to reduce or kill COFEE’s effectivity.
“We want to promote a healthy unrestricted free flow of internet traffic and show why law enforcement should not solely rely on Microsoft to automate their intelligent evidence finding” they declared to theregister.
Not to offend, but I say it’s an exercise of posing because this action in no way “promotes healthy unrestricted free flow of internet traffic” and recognising they may have a point in the reliance in Microsoft of law enforcement in the automation of their evidence collection, the fact is that in most cases it’s in Microsoft realm where evidences live and early, easy evidence collection is better than no evidence at all.
In any case, if they have concerns relating this product, which they may perfectly have, they’d better raise them disclosing the implications so everybody can balance the convenience of using COFEE or not.
At this point, some of you may be thinking I forgot to link to DECAF.
No, I din’t forget and neither did the guys at theregister or Wired…
Via theregister.
sep 11 2009
“You deserved so much better”
After more than 30.000 people signed this petition , Mr. Gordon Brown, Prime Minister UK, says sorry to Mr. Alan Turing in an article for the Daily Telegraph. I have to say I was a bit reluctant regarding the petition because in a way it may mean that Mr. Turing deserved it more than others because of the contribution he made to his country during The War. But Mr. Brown answer does not forget all those who suffered the same treatment as Mr. Turing at that time.
It is impossible to summarize here the contribution that Mr. Turing did to Computer Science.
Most media is focusing lately in the Turing Test. I almost see this like a joke that many took seriously. I just hope that popular belief does not convert the Turing Test into a real metric.
But to name one outstanding contribution, to me the Turing Machine was the ultimate calculus model at the time, which allowed him and others to dig deeper on Computational Complexity Theory.
As Mr. Brown said, “You deserved so much better”, Mr. Turing.
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