Java: Oracle releases emergency update

The security update is to plug a hole in Java that was recently added to the Blackhole exploit tool. Despite the urgency and importance of this component of the upgrade, Oracle makes no mention about the dangerousness of the situation and the update dubbed simply "Recommended Version 7 Update 7".

Remember that this vulnerability in Java 7 allowed hackers write malware to infect a computer just by visiting a website. The problem affects both Windows and Mac

At this time, it is advised that all users who visit the Oracle website to download the update.

JAVA exploit leads to serious security hole

It has been confirmed that the vulnerability affects users of Windows, Linux and Mac OS X. The bug is present in JRE 1.7 is the latest version. Apple had decided, since the Lion version of last year that it would stop offering Java installed on their machines, that policy remained with the Mountain Lion. However, users can manually install Java on your computer.

The computer security expert Tod Beardsley also confirmed that the flaw affects Macs. Just you have this version of Java installed and visit any page that has been configured for an attack and is replaced by your computer at the mercy of hackers.

It is expected now that Oracle can release a security update for failure. For now you should keep the version 1.6 or disable Java in your browser.

Minecraft Snapshot 12w34a

So while you wait for that, here are the changes in this week’s snapshot:

• Added item frames
• Added cobblestone walls (yes, mossy too)
• Maps now align to a grid, making it easier to create adjacent maps. Maps can also be cloned
• Stairs now auto-arrange into corners. This is a test and may change based on feedback
• Mobs can travel through portals
• Leather clothes can be dyed
• Removed the “wip block” from the creative menu
• Added two new crops and associated items
• F3+P will toggle the auto-pause when the window loses focus (it’s for debugging, mainly)
• F3+H will toggle detailed item descriptions (also for debugging)
• Added arrow-sensitive wooden buttons
• Trapdoors can be placed in top-most position (based on cross-hair aim)
• Added Potion of Invisibility. 

Download the snapshot here:

• Client: Minecraft_12w34a.jar
• Server: Minecraft_Server_12w34a.jar (or EXE)

10 tips to improve our wireless network

How to improve a wireless network?
In this article I will give some tips to try to improve the quality of wireless signal in our house, in order to have a more stable network, with fewer breaks and a better debt.

1 - Place the wireless router (or access point) at the midpoint

So we can get cover more areas (bedroom, living room, kitchen, etc.) from our house, causing the signal to higher quality. If we put our access point at one end, possibly at the other end the signal strength is not the best. 

2 - Keep the router away from walls, metal objects, glass, etc.

We must try to move away our WiFi router from metals, some types of floors, glass or other surfaces that are subject to interference. Equipment such as microwaves, drills, etc are also a lot of interference sources. Make an analysis of the spectrum.

3 - Replace the antenna of the router (if possible)

The antennas that come with the router are usually omni-directional signal that is transmitted in all directions. If your router is near an outside wall, 'half' of the signal will not be passed because it will be diffused out of the house (for example). In this sense we can choose an antenna with more gain (DBIS) and also directional or sectoral, focusing the signal in a place / area specific.

Tutorial: Turn off the mouse from "waking up" the Windows 7

To activate Windows 7 only with your keyboard, disable this functionality and touch pad, the process is extremely simple.

Step 1: Click on Start and type 'Mouse'. Should be the first one

Step 2: In this window, click on the 'Hardware' tab. Select the mouse you're using, and then 'Properties'.

 

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Valve improves Games for Linux

The game Left 4 Dead 2 had a 14% higher performance on a Linux system compared to a Windows system with the same hardware configuration.

The game was tested on a machine with an Intel Core i7 3930k, Nvidia GeForce GTX 680 and 32 GB of RAM. In the system with Ubuntu 12 and Open GL, the game has a performance of 315 FPS, while the Windows 7 machine was up by 270.6 FPS. 

The research team concluded that the Valve Open GL is more efficient to process data than Direct3D technology. The Linux Valve team will still have to battle a lot, especially to get work with the graphics card manufacturers such as AMD or Nvidia. 

These tests are published days after the CEO of Valve have stated that Windows 8 was a disaster and that the company would turn over to Linux.