How to recover to earlier working condition on the Google Nexus S

 We show you how to recover to earlier working condition on Google Nexus S

The Google Nexus S is highly customizable and you have been hard at work tweaking it to your liking, but now the fun is over and you want to return it to its factory settings again.
Here, we show you how to hard reset the Google Nexus S with step by step instructions.
Please note that all data will be deleted from the Google Nexus S as a result of this procedure. This process may or may not delete data stored on the microSD card. We recommend backing up all of your personal data before proceeding.

First, try this: (This resets to factory settings)

1. From the main home screen, tap menu
2. Tap Settings, then Privacy
3. Tap Factory data reset
4. Tap Reset phone
5. Enter your password if required, then tap Erase everything to confirm

If that doesn't work, or if your phone is frozen:

1. Turn the power off. If your Nexus S is frozen, pull the battery out and reinsert it
2. Hold the Volume Up button
3. Press and release the Power button
4. Fastboot mode screen appears with an Android symbol and some options.  
5. 
   
6. Reboot bootloader, Reboot, Recovery, and Power Off
7. Select Recovery by pressing the Volume Down button
8. Press and release the Power button
9. You then need to confirm on the android-with-exclamation-point screen. Now simply confirm your decision: Volume Up for YES and Volume Down for NO.

All data including third-party applications could be deleted from the Google Nexus S. Once the recovery to last working condition is complete, the phone will reboot to normal state

SMS Trojans: all around the world

How SMS trojans works and how it affect our smart phones. Lets take a look.

I like researching and get knowledge about technology. Good and Bad parts of it and I found a strange thing about Android Device's Malware.

I found a good article about an SMS trojan at SecureList.com

There is an Application named "SuiConFo". Actually its a good application but someone has created the bogus app with same name which is popular in market. It looks like after installing.



There are 2 main malicious classes of this Trojan: ‘MagicSMSActivity.class' and ‘SMSReceiver.class'. The first is mainly responsible for sending SMS messages, while the second is used to hide incoming messages from specific numbers. As mentioned above, after launching this app shows an ‘Android version is not compatible' error message:



Right after displaying this message the Trojan will call the public method getSimCountryIso in theTelephonyManager class in order to retrieve the ISO country code of the SIM card:



After that, the malware defines the variables ‘s1' (SMS number) and ‘s2' (SMS text):



The list of countries consists of 8 options: France (81001 SMS number), Belgium (9903 SMS number), Switzerland (543 SMS number), Luxembourg (64747 SMS number), Canada (60999 SMS number), Germany (63000 SMS number), Spain (35064 SMS number), and the UK (60999 SMS number).
It looks like the virus writers made a mistake in the code. The Trojan will send an SMS message using the SmsManager class with the sendTextMessage method:
smsmanager.sendTextMessage(s1, null, s2, pendingintent, pendingintent1)
where ‘s1' is a number and ‘s2' is a text. These variables are defined correctly for all countries except Canada:

if(s.equals("ca"))
{
s1 = "SP";
s2 = "60999";

After defining the country and, therefore, the number and message text, the Trojan will send 4 SMS messages with the help of the sendTextMessage method as mentioned above.

SMSReceiver.class is responsible for hiding incoming SMS messages from particular numbers. If there is an incoming SMS message from one of the following numbers: 81001, 35064, 63000, 9903, 60999, 543, 64747, then the Trojan will try to hide it using the abortBroadcast method. The number itself is retrieved from the SMS message with the help of getDisplayOriginatingAddress.

There is another interesting thing lurking inside this malware. If you look at this part of the code:

you may notice that after hiding the incoming message (abortBroadcast) this Trojan will send one more SMS to a French cell phone number with the text stored in the ‘s' variable. And that ‘s' variable is defined with the help of the getMessageBody method when an incoming SMS message arrives.

In other words, the Trojan will send an SMS message to a French cell phone number with the text taken from a reply from a premium rate number. This may help the cybercriminals find out how many premium SMS messages have been sent.

Unfortunately, today SMS Trojans are one the easiest ways for cybercriminals to make easy money fast. 

Only advise is do not to install any application just for try. Install only popular application from "Google Play Market" only. Do not install application directly i.e "APK" files.