Two new vulnerabilities in MS Excel and symantec products

Two new vulnerabilities in MS Excel and symantec products

Posted by tech master  |  at  6:56 PM

The problem

1. A vulnerability has been reported in several editions of Microsoft Excel. It can be exploited to take control of a user's system. Memory could be corrupted and arbitrary code executed.

2. Various Symantec products, including Norton Antivirus 2006, Internet security 2005 and 2006, SystemWorks 2006, and Antispyware edition 2005 have vulnerabilities that can be exploited to compromise a user's system. They are caused due to errors in certain ActiveX controls under certain conditions.



What to Do

Microsoft has released patches for various editions of Excel. Find them at
www.microsoft.com/technet/security/Bulletin/MS07-044.mspx
Symantec Security response has released Bloodhound.Exploit.148 to detect and block attempts to exploit the aforementioned vulnerability. Get fix at http://tinyurl.com/4kwu

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Touchscreen - All things you ever wanted to know about it

Touchscreen - All things you ever wanted to know about it

Posted by tech master  |  at  2:25 PM

Today everyone must be familiar of what a touchscreen is.
In simple words, a touchscreen is a screen which you can operate using your finger.

Today, we see touchscreens in mobiles, computers and many other devices and you all must be willing to know how touchscreen works.
Here i am going to tell you how a touchscreen works and about different types of touchscreens.


Components of touchscreen

A touchscreen consists of three major components. They are :-

1. Touch sensitive surface - It is a glass panel which is put over the viewable screen. Electric current or charge or ultrasonic waves are passed through it. When it is touched, there is a change in the current or charge or frequency of ultrasonic waves.

2. Controller - It can also be termed as CPU of touch screen. When touch sensitive surface is touched, the controller only records the change in the current or charge or frequency of ultrasonic waves and identifies the point where you have touched.

3. Software driver - Controller identifies the point of touch and then sends it to the machine in the form of signal. But the signal which is sent by the controller cannot be understand by the machine. Therefore the software driver converts the signal in to signal which is understandable by the machine and then the machine opens that thing which you have touched.



Different types of touchscreens

1. Resistive touchscreen - This type of touchscreen consists of two glass layers. One layer is coated with the conductive material and other is coated with the resistive material. Electric current is passed through the conductive material. When the pressure is applied on the screen, both the glass layers collide and change in current is recorded by the controller and it is sent to the machine by means of software driver. Resistive screens offer limited clarity na dcan be easily damaged by sharp objects.

2. Capacitive touchscreen - This type of touchscreen is consits of a glass panel coated with charge storing material. When the screen is touched, a small amount of charge is drawn to the point of contact which is registered by the controller and sent to the machine by means of software driver. They cannot be easily damaged and clarity is much better than resistive screens.

3. Acoustic touchscreen - In this type of touchscreen, ultrasonic waves are passed over the glass panel. When the screen is touched, change in frequency of ultrasonic waves is recorded by the controller and sent to machine by means of software driver.

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Nokia 7900

Nokia 7900

Posted by tech master  |  at  7:01 PM

The Nokia design department has gone extreme with the introduction of their new 7900 - and its little brother, the 7500. The 7900 has jagged edges and cuts everywhere, which give it a unique look. The surface has been etched, and you should be able to choose from 49 different colours that can be used to light up the keypad. There's a whole gigabyte of space on this OLED screen to preview your dear photos on. Perks include wallpapers that change their appearance as time passes by, and with changes in battery and signal strength. The phone should be out by the final quarter of the year, with a rumoured price of around $550.

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Opera Hacks

Opera Hacks

Posted by tech master  |  at  5:05 PM

1. Fighting Ads using Opera's Filter

Ads are everywhere on almost any site you visit. Firefox may have Adblock Plus, but Opera has its own ad blocking system in place. The file urlfilter.ini in
C:\Documents and settings\Your_username\Application Data\Opera\profile
(where C:\ is the drive in which Windows is installed) contains a list of sites to be blocked. Add site addresses and wildcards such as "*" (the star) to block sites. There are several such lists available on the Internet ready for download. One such good list can be found at www.fanboy.co.nz/adblock/. Just download the Opera list and copy the file to the given location or its contents to the file that already exists.


2. Modifiying Tab width range

Tabbed browsing is a boon, but the use of too many tabs in Opera causes the names to be cropped off. In Opera, you can set a limit to how small and how wide a tab can be allowed to be. Extract the skin.ini from skin.zip from
C:\Program Files\Opera\skin (where C:\ is the drive in which you have installed Opera)
Open skin.ini in Notrepad and modify these lines

Pagebar max button width =
Pagebar min button width =

to suitable values. If the lines aren't present, create them and then save the file.Add the edited file back to the skin's ZIP file. Restart Opera and select skin from Tools > Appearance.


3. Adding shortcuts to execute programs

Keyboard shortucuts can be used in Opera to quickly start programs to go to a particular site. The trick is to add shortucuts to the shortcut.ini file located at C:\Documents and settings\Your_username\Application Data\ Opera\Opera\profile\keyboard. Open it in Notepad. Creating shortcuts is done in manner similar to this:G, G="Execute program, "c:\WINDOWS\Notepad.exe"

Here, typing [ G] [ G] will start Notepad. In similar manner, the path of the program can be replaced with a site url, for example, ="Execute program, "www.myproblog.blogspot.com". Opera will load the site when you use the shortcuts.

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Falcon Northwest DRX

Falcon Northwest DRX

Posted by tech master  |  at  5:19 PM

Now, most of us believe gaming isn't something you do on laptops. They're meant for general office work - Word, Excel, e-mail, etc.
Falcon Northwest is out to prove us wrong. The DRX has two 7950GTX cards in SLI, and the processor driving them is a Core 2 Duo X6800 @2.93 GHz. Shocked yet? The rest of the specs go thus: the 17-inch screen does a resolution of 1920 x 1200, something you normally find on 24-inch monitors. Three hard drives are provided - a 100 GB 7200 rpm for performance, and two 160 GB 5400 rpm ones for mass storage. A TV-Tuner and four speakers are built in as well. Surely all this must be really expensive - well over the $3000 mark? Actually, it's close to more than twice that: $7687.

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Instant messengers tricks

Instant messengers tricks

Posted by tech master  |  at  4:51 PM

Yahoo messenger trick

If you ever think that someone is avoiding you by signing in as invisible. There is a way to find out whether a person is online or not.

You can find it by using Doodle IMvironment. Start an offline conversation with the contact and send them a dummy message. If they're actually online, this should open a conversation window on their machine.

Now, select the Doodle IMvironment from IMvironment > See All IMvironments > Yahoo Tools. If your contact is really offline, you'll see "Waiting for friend to load Doodle" for a really long time. If, however, your contact is online, the IMvironment should load in less than a minute and let you draw.



Google talk trick

1.Run google talk with multiple email addresses

To run google talk with multiple email addresses, first create one copy of google talk shortcut on your desktop - leave the original intact. Right click on this shortucut and select Properties. The Target text box will show you the path of the EXE for Google talk - something like
"C:\ProgramFiles\Google\GoogleTalk\googletalk.exe"

Change this to
"C:\ProgramFiles\Google\GoogleTalk\googletalk.exe" /nomutex

You're done. Now you can run google talk with multiple email addresses.

You can also run yahoo messenger with multiple email addresses. I have posted this trick - how to run yahoo messenger with multiple with multiple email addresses in my earlier posts. Click here to read it.

2. Formatting text in Google talk

To type in bold, enclose the text within asterisks (*hi* = hi), to type in italics, enclose the text within underscores (_hi_ = hi)

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