Friday, August 27, 2010

Carefully use the Wi-Fi in Public Places

Internet users commonly use Wi-Fi service requested in order to be more careful. According Anitivirus company Symantec warned of the risk of the virus in a public room. "Public facilities such as wifi is in fact much more vulnerable broken into by hackers, and insert a fake Antivirus, to deceive the user," explained Symantec's senior Nick Johnston.

In fact, he confessed to finding a large terminal in the airport security system in the UK who was using a fake Antivirus aka "scareware." According to him, using scareware, fake Antivirus malware will insert a task to disable or remove the Antivirus software that is legal. So they are free to install illegal software on the PC user.

"Scareware is a type of malware or hackers can force the infected computer users to use the full version of software that can eradicate the virus fictitious," he added. Software was forcibly installed by the hackers, and they can easily steal personal information like bank accounts, email accounts, social media networking, and so forth.

So be careful when you are going to use Wi-Fi in public areas, and alert to the pitfalls of cyber criminals.

3 Hours of Mobile Phone Roaming Tariffs in Malaysia $1,100

Couples Singapore-shocked after seeing his phone bill swells to $1,100 after a trip to Johor in Malaysia. Though the couple only stopped at a restaurant in Johor about three hours. The bill came from the wife's mobile phone service. Her husband, Wong objected to the bill that his wife's cell phone. Billing details of data shows that the largest cost of data services to reach around $982.

"We arrived in Malaysia some time ago, around 20:00 pm local time, and we just had dinner at a restaurant. After three hours we went back to Singapore, but at the end of the month I was shocked after receiving the bill of $1,100 on roaming charges," said Wong. Wong was known to use the services of Singapore operator M1, wearing a roaming data tariff, to use data services when customers are overseas. Tariff data roaming services can include receiving and sending emails, browsing the Web, or accessing social networking features to use the phone.

"But, my wife's cell phone was in the bag just when we were in Malaysia, my wife's phone is a slider phone, and after the phone is closed, all functions should automatically switch off. There's no way she can not accidentally use data services," he said. In addition, he said, his wife also did not have the habit to use data services through mobile phones. "So it is highly unlikely," said Wong. M1 itself states have provided relief around $100, so that Wong must pay $1,000 to the charge.

Malware Infiltrate in the Image File

Microsoft Malware Protection Center (MMPC) has positively identified the malicious script is embedded in the image file. Malware, which is currently circulating on 4chan message board, seems to be the next stage in the evolution of a known threat 4chan.js first appeared in 2008. Not surprisingly, the latest iteration 4chan.js depend on user trust and unfamiliarity image file format using the format HTA. "Infection is the image format PNG storing data in a compressed format is quite dangerous," said researcher Michael Johnson MMPC.

"Users can follow the instructions inside. PNG and save the file as a bitmap (BMP) with HTA extension. This is by performing decompression of files containing images, some JavaScript, and one or more files that can be executed," said Michael. According to Johnson, the above method allows the malware to repackage themselves, defeating the CAPTCHA mechanism from 4Chan.

In this method, we see, the bitmap is created with a random variable at a time. Of course, most users tend to believe the image format. They may not realize that the same image file may contain malicious scripts that are embedded. For that MMPC recommend that users do not have to follow the instructions you see a random picture, especially if the instruction involves changing the file in any way and then run it.

Monday, August 23, 2010

Frog Eggs used for Odor and Gas Detector

Researchers in Japan have created an accurate sensors capable of detecting odors and gases by using frog eggs that have been genetically engineered.  In a journal published in the Proceedings of the National Academy of Science, the scientists hope the discovery could design a better machine, to detect polluting gases like carbon dioxide. "This discovery is important for the environment" said Shoji Takeuchi of the Institute of Industrial Science, University of Tokyo.

Takeuchi and his colleagues injected DNA from three insects such as silk moths, gnats and fruit flies gold back, into the eggs of the African frog. The merger of the three DNA can be used for detecting insects and the smell of gas.  "We inject the DNA into frog eggs, then we can use a sensor that is cheap and useful." Takeuchi said. The eggs that have been genetically modified is placed in a special cartridge, where so they can detect different chemicals and odors.

"We use three kinds of pheromones and one odorant (four of them are chemically the same) and these eggs could clearly detect the type of chemical smell and different." Takeuchi added. The team is hoping to use the same method to detect gases such as carbon dioxide in the future. "When you think like a mosquito, it's easy to find because the carbon dioxide humans are humans. So mosquitoes have CO2 sensors recipients. Thus we can extract DNA from the mosquito into the eggs of frogs in order to detect CO2." Takeuchi clear.