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dimecres, 15 / novembre / 2006 |
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[ADSLZone] Telefónica vuelve a implantar el proxy caché en las migraciones a 3 megas. Bé, sembla que l'anunci de la migració de les ADSL de Telefonica a 3 MB tenia un regal associat: la reactivació dels proxys transparents. Als usuaris que van migran a 3 MB els hi activa el proxy...
El meu germà, per exemple, ja ha fet la migració (en 24 hores li han fet l'augment de velocitat) i justament aquest matí tenia problemes amb la navegació web, només pel port 80/tcp... i fent la prova veig que, efectivament, la seva sortida ara passa per un proxy.
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[SecurityFocus] Quantum attacks worry computer scientists
In the weird world of quantum computing, the state of computer systems networked together is so fragile that a read access to a single quantum bit, or qubit, on one machine would require a network-wide reset. It's no wonder, then, that two researchers who are working on ways of defending against the future possibility of malicious attack assume that any unauthorized access to a quantum computer constitutes a catastrophic failure.
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[The Register] Smartphones get a firewall. Trend Micro publica una versió específica per a telèfons mòbils del seu tallafocs i sistema de detecció d'intrusions. Només disponible per a Windows Mobile 5 i Symbian 9.1.
Smartphones are attracting more and more software developers, both good and bad. Nokia, for instance, has 2 million registered developers, while Windows Mobile has 650,000. "The malware community is cutting its teeth and learning how to create for these devices," he adds.
Mobile Security 3's firewall and IDS are particularly relevant when a smartphone also runs business apps over Wi-Fi, Trend says. Indeed, the company claims that the convergence of business and personal use on a single device is what makes it such an attractive target for malware, along with the multiplicity of routes that a virus can use to get onto the device, including wireless data, PC sync, memory cards and peer-to-peer Bluetooth links.
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La revista ZDNet (versió Regne Unit) es fa ressò de la publicació de l'estalvi de pantalla amb la BSOD... i com McAfee l'identifica com un virus:
Antivirus vendors are not impressed with the spoof screensaver software, which is named BlueScreen v3.2. McAfee is actively preventing users from downloading the software.
McAfee's security research team told ZDNet UK this week: "This is not a false positive. We are intentionally detecting this as Joke.Bluescreen.c as it's meant to scare people."
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De vegades Microsoft demostra un nivell d'humor digne de menció... la prova, publica un estalvi de pantalla (screen saver) que mostra pantalles blaves de la mort: BlueScreen Screen Saver v3.2
One of the most feared colors in the NT world is blue. The infamous Blue Screen of Death (BSOD) will pop up on an NT system whenever something has gone terribly wrong. Bluescreen is a screen saver that not only authentically mimics a BSOD, but will simulate startup screens seen during a system boot.
- On NT 4.0 installations it simulates chkdsk of disk drives with errors!
- On Win2K and Windows 9x it presents the Win2K startup splash screen, complete with rotating progress band and progress control updates!
- On Windows XP and Windows Server 2003 it present the XP/Server 2003 startup splash screen with progress bar!
Bluescreen cycles between different Blue Screens and simulated boots every 15 seconds or so. Virtually all the information shown on Bluescreen's BSOD and system start screen is obtained from your system configuration - its accuracy will fool even advanced NT developers. For example, the NT build number, processor revision, loaded drivers and addresses, disk drive characteristics, and memory size are all taken from the system Bluescreen is running on.
Use Bluescreen to amaze your friends and scare your enemies!
Bluescreen runs on Windows NT 4.0, Windows 2000, Windows XP, Windows Server 2003 and Windows 9x (it requires DirectX).
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The Mac OS X Threat Landscape: An Overview és una anàlisi de 29 pàgines que fa un repàs a l'estat de seguretat del Mac OS X. Fa un recull de totes les vulnerabilitats conegudes i explotables, tant a nivell local com remot. També explica quines són les principals deficiències a nivell de disseny del sistema operatiu.
També es fa una revisió del malware actualment existent per a Mac OS X, explica els virus i cucs així com l'existència de tres rookits coneguts per a Mac OS X.
La primera versió del document es va publicar a finals de juliol i ara tot just s'acaba de publicar la segona versió, amb data 13 de novembre.
Historically, the Apple Macintosh OS X operating system has received little attention in the security industry. This trend is changing; in the last few years, research targeting OS X has increased significantly and media attention regarding its security has increased as well.
This document outlines the current OS X threat landscape as observed by the DeepSight Threat Analyst Team. It gives an overview of the advisories Apple has released and the trends researchers have made in their focus of the issues. The paper also discusses past, current, and future threats, including high-profile vulnerabilities, publicly available exploits, and rootkits.
This document does not disclose new threats or techniques for the OS X platform. It was written with the intention of laying out the realistic and current threat landscape that may affect OS X by analyzing what researchers around the world have already discovered. The document also tries to discuss future possibilities that attackers may focus on and the security mechanisms that can be put in place to effectively prevent exploitation attempts. Note that these speculations are based on current threats and research, rather than on evidence from actual cutting-edge attacks.
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[InfoSecWriters] IPv6 Security Issues
Deployment of a new generation of Internet protocols is on its way. It is a process that may take several years to complete. In the meantime, the deployment raises considerable new issues, being security one of the most compelling.
This paper reviews some of the improvements associated with the new Internet Protocol version 6, with an emphasis on its security-related functionality. At the end, it concludes summarizing some of the most common security concerns the new suite of protocols creates.
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© Copyright 2000-2006 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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