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diumenge, 22 / abril / 2007 |
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«A friend of mine asked me today what all the recent talk about "Web 2.0" was about. Knowing that he was familiar with linux, my response was "chmod 777 web". He understood.
(...)
The web is becoming more hackable.. in the good sense. People are starting to realize that the web is more than just a publishing medium. It's a place where you can (or should be able to) actually do stuff. Web sites that let you do stuff are more important than web sites that only let you read stuff.
James Snell
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  | 18:44 (# Enllaç permanent) | Comentaris: | Trackback:
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[The Guardian] Operation Ore flawed by fraud parla d'una gegantina operació realitzada al Regne Unit contra suposats consumidors de pornografia infantil... però pel que sembla la majoria d'incriminats en realitat eren víctimes d'un frau: s'havia utilitzat la seva targeta de crèdit per pagar per la pornografia, però aquestes dades havien estat robades.
Operation Ore has become embedded in public consciousness as the landmark police operation that tracked down people - almost always men - who allegedly paid to access child pornography via computer. In all, 7,272 British residents were on its target lists, more than 2,000 of whom have never been investigated; and 39 men have killed themselves under the pressure of the investigations. Ore has dragged big names into the spotlight - such as the musicians Pete Townshend, the Who guitarist, and Robert del Naja of Massive Attack, both falsely accused of accessing child pornography.
(...)
New evidence I have gathered for my work as an expert witness in defence cases shows that thousands of cases under Operation Ore have been built on the shakiest of foundations - the use of credit card details to sign up for pornography websites. In many cases, the card details were stolen; the sites contained nothing or legal material only; and the people who allegedly signed up to visit the sites never went there.
Un informe més detallat és Sex, lies and the missing tape.
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| 18:16 (# Enllaç permanent) | Comentaris: | Trackback:
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Diumenge passat no vaig anar al Mercat de Sant Antoni (vaig haver de treballar tot el cap de setmana), però avui sí que hi he tornat. He adquirit 10 números dels «Episodis de la història», així com un exemplar de la primera edició de la Història de Núria de Fortià Solà (edició limitada a 375 exemplars impresos en paper de fil Guarro):
Aquest exemplar va pertanyer a un Doctor R. Martí Martí de Barcelona.
També he adquirit el volum amb tots els fascicles de la Història, una sèrie col·leccionable publicada als anys 20 a Barcelona.
M'ha fet gràcia trobar aquesta fotografia de l'església de Sant Miquel de Terrassa anterior a l'actuació de Puig i Cadafalch:
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| 16:24 (# Enllaç permanent) | Comentaris: | Trackback:
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[Via Slashdot] Un article de New Scientist, Seeing through walls, explica com és possible la visualització remota d'allò que mostra una pantalla tot escoltant les emissions de radiofreqüència. Fins ara es sabia que això es podia fer amb les pantalles de tub (les CRT), però semblava que ambles pantalles LCD no era possible. Però es veu que sí!
Back in 1985, Wim Van Eck proved it was possible to tune into the radio emissions produced by electromagentic coils in a CRT display and then reconstruct the image. The practice became known as Van Eck Phreaking, and NATO spent a fortune making its systems invulnerable to it. It was a major part of Neal Stephenson's novel Cryptonomicon.
CRTs are now well on the way to being history. But Kuhn has shown that eavesdropping is possible on flat panel displays too. It works slightly differently. With a flat panel display the aim is to tune into the radio emissions produced by the cables sending a signal to the monitor. The on-screen image is fed through the cable one pixel at a time. Because they come through in order you just have to stack them up. And Kuhn has worked out how to decode the colour of each pixel from its particular wave form.
If everything is just right, you can pick up signals from some distance. "I was able to eavesdrop certain laptops through three walls," says Kuhn. "At the CEBIT conference, in 2006, I was able to see the Powerpoint presentation from a stand 25 metres away." Here's the image he managed to get:
Això, com indiquen, recorda molt al TEMPEST, una aplicació dels serveis d'intel·ligència nord-americans per veure de forma remota allò que es visualitza a la pantalla d'un ordinador. Hi ha, fins i tot, un TEMPEST de codi obert anomenat EckBox.
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| 16:12 (# Enllaç permanent) | Comentaris: | Trackback:
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© Copyright 1996-2007 Xavier Caballe.  . Si no s'indica expressament el contrari, el material publicat en aquest weblog es distribueix d'acord amb la llicència Creative Commons. El contingut és responsabilitat única i exclusivament del seu autor i no té cap relació amb les seves activitats professionals.
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