Computer scientists prevent data theft on smartphones and tablet computers

Feb 27, 2013
Some mobile applications on web-enabled mobile phones and tablet computers spy on personal data. Computer scientists from Saarbrücken prevent this through a new approach. The freely available app attacks the program code of the digital spies. Credit: Bellhäuser - das bilderwerk

Some mobile applications on web-enabled mobile phones and tablet computers spy on personal data. Computer scientists from Saarbrücken prevent this through a new approach. Its chief attraction: For the protection to work, it is not necessary to identify the suspicious programs in advance, nor must the operating system be changed. Instead, the freely available app attacks the program code of the digital spies. The researchers present the app at Cebit 2013 in Hanover.

"Malicious Android apps are becoming a mass plague" is the headline of a study published by a German software company for anti-virus programs in recent days. That this is not just a is confirmed by the analysis of the governmental supported "Stiftung Warentest" . In May last year, it categorized 37 popular apps as "critical" for the user's privacy.

"I am not surprised. My smartphone knows everything about me, starting with my name, my phone number, my e-mail address, my interests, up to my current location," explains computer science professor Michael Backes, who manages the Center for IT-Security, Privacy and Accountability at Saarland University.

To prevent smartphones and tablets turning into digital spies the researchers have developed a new method which works for the Android operating system. "Similar to a screening line, the method scans every selected app installed on the smartphone and indicates its real behavior: Accessing your private contacts, establishing a connection to the internet and checking your position", Backes explains. The user can now revoke or grant privileges to the respective app at any time. A company founded by Backes used the published method to develop an app named "SRT Appguard". It runs problem-free on Android 2.0 and higher. It is also now guaranteed that the guarded apps receive updates from the Play Store.

For their approach, the Saarbrücken researchers use the fact that the Android apps, written in the programming language Java, run in a so-called virtual machine. Compared to other smartphone operating systems, a running app can access the storage of Android's virtual machine. That's when SRT Appguard comes into play. Before the suspicious app starts, Appguard scans the storage of the virtual machine to detect security-critical functions – identified by the IT-security experts from Saarbrücken. It does not manipulate the bytecode anymore. Instead, it directs the function call within the virtual machine to the security monitor, which observes the suspicious method calls and can even block them.

Explore further: Encryption made easier: Just talk like a parent

More information: Michael Backes, Sebastian Gerling, Christian Hammer, Matteo Maffei and Philipp von Styp-Rekowsky: The Android Monitor – Real-time policy enforcement for third-party applications
www.infsec.cs.uni-saarland.de/projects/android-monitor/android-monitor.pdf

Download of SRT Appguard from the software register Heise.de
www.heise.de/download/srt-appguard-1187469.html

Related Stories

Yahoo! helps find smartphone 'apps'

Jun 16, 2011

Yahoo! has begun helping people navigate the sea of applications available for Apple iPhones or mobile gadgets powered by Google-backed Android software.

Android users get malware with their apps

Mar 02, 2011

(PhysOrg.com) -- As new platforms make their way into the market there will always someone who is looking to exploit them for illegal or unethical ends. More proof of that fact has come today when Google was ...

Recommended for you

Solar Impulse 2 pilot becomes aviation legend

20 hours ago

At 62 years of age, Swiss Solar Impulse 2 pilot Andre Borschberg has made aviation history with a record breaking solo flight across the Pacific that he has called "an interior journey".

Facegloria: Facebook for Brazil's Evangelicals

21 hours ago

Fluffy clouds waft across a blue sky as you log in and while you chat with friends, Gospel music rings out: welcome to Facegloria, the social network for Brazilian Evangelicals.

Mexico City proposes regulations for Uber

21 hours ago

Mexico City is proposing regulations that would allow Uber and other smartphone-based ride-sharing apps to operate, while requiring drivers and cars to be registered, the city's Office of Legal and Legislative Studies said ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.