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Even Disconnected Computers May Face Cyberthreats

Posted on December 9, 2013 by in Blog

If your computer is infected with a virus or other forms of malware, disconnecting the machine from the Internet is one of the first steps security experts say you should take. But someday, even physically separating your laptop from a network may not be enough to protect it from cyber evildoers.
German computer scientists have come up with a prototype for building “covert channels” between computers using the machines’ speakers and microphones, potentially defeating high-security measures that rely on placing an “air gap” between computers.
The scientists said their network was based on a system originally designed for underwater communication.
“We adapt the communication system to implement covert and stealthy communications by utilizing the near ultrasonic frequency range,” Michael Hanspach and Michael Goetz, of the Fraunhofer Institute for Communication, Information Processing and Ergonomics, wrote in a paper published in the November issue of the Journal of Communications.
As Dan Goodin explains in Ars Technica:
“The proof-of-concept software — or malicious trojans that adopt the same high-frequency communication methods — could prove especially adept in penetrating highly sensitive environments that routinely place an ‘air gap’ between computers and the outside world. Using nothing more than the built-in microphones and speakers of standard computers, the researchers were able to transmit passwords and other small amounts of data from distances of almost 65 feet. The software can transfer data at much greater distances by employing an acoustical mesh network made up of attacker-controlled devices that repeat the audio signals.”

And such off-network intrusions may be more than theoretical. Ars Technica reported that a mystified security researcher determined his computers, which were unplugged from networks and had their Wi-Fi and Bluetooth cards removed, were infected with malware that used high-frequency transmissions.
The idea of hackers “jumping the air gap” has military officials worried, Geoffrey Ingersoll of Business Insider reported.
“If you take a cybernetic view of what’s happening [in the Navy], right now our approach is unplug it or don’t use a thumb drive,” retired Navy Capt. Mark Hagerott, a cybersecurity professor at the U.S. Naval Academy, said at a recent defense conference. But if hackers “are able to jump the air gap, we are talking about fleets coming to a stop.”
As Ingersoll explained in his post, “Ships would find their targeting software exploited and shut down, possibly even hijacked.”
Hanspach and Goetz, the German scientists, said their concept poses dangers but added that safeguards could be implemented.
“Acoustical networking as a covert communication technology is a considerable threat to computer security,” the scientists wrote in their paper. However, they said such audio snooping could be prevented using “a software-defined lowpass filter” or a “detection guard” that analyzes audio to identify hidden messages.
But to go through the trouble of putting up such countermeasures, computer owners would have to suspect they were being snooped on first.

US, Britain Spying on Global Online Gaming World: Report

Posted on December 9, 2013 by in Security

US, Britain ‘Spying on Virtual World’: Report

WASHINGTON – US and British intelligence have been spying on the global online gaming world because they fear terrorists could use the hugely popular platform to plot attacks, a report said Monday.

Spies have created characters in the fantasy worlds of Second Life and World of Warcraft to carry out surveillance, recruit informers and collect data, The New York Times said, citing newly disclosed classified documents from fugitive US intelligence leaker Edward Snowden.

The report came as eight leading US-based technology companies called on Washington to overhaul its surveillance laws following months of revelations of online eavesdropping from the former National Security Agency (NSA) contractor.

“Fearing that terrorist or criminal networks could use the games to communicate secretly, move money or plot attacks, the documents show, intelligence operatives have entered terrain populated by digital avatars that include elves, gnomes and supermodels,” the Times said.

“The spies have created make-believe characters to snoop and to try to recruit informers, while also collecting data and contents of communications between players,” the report said.

It added: “Because militants often rely on features common to video games — fake identities, voice and text chats, a way to conduct financial transactions — American and British intelligence agencies worried that they might be operating there, according to the papers.”

The report cited a 2008 NSA paper that warned that the virtual games — played by millions of people the world over — allowed intelligence suspects “a way to hide in plain sight.”

The documents do not give any examples of success from the initiative, the report said, adding that experts and former intelligence officials said “that they knew of little evidence that terrorist groups viewed the games as havens to communicate and plot operations.”

The surveillance, which also included Microsoft’s Xbox Live, could raise privacy concerns, noted the newspaper.

Apple, Facebook, Google, Microsoft, Twitter, Yahoo, AOL and LinkedIn meanwhile wrote an open letter to President Barack Obama and the US Congress calling on Washington to lead the way in a worldwide reform of state-sponsored spying.

“We understand that governments have a duty to protect their citizens. But this summer’s revelations highlighted the urgent need to reform government surveillance practices worldwide,” the letter said.

© AFP 2013


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Fortinet to Buy Back Up to $200 Million in Stock

Posted on December 9, 2013 by in Security

Network security firm Fortinet announced on Monday that it would buy back up to $ 200 million of its stock as part of a share repurchase program expected to run through December 31, 2014.

The timing, number and value of shares repurchased under the program will be determined by Fortinet management at its discretion, with the company being able to repurchase shares from time to time in privately negotiated transactions or in open market transactions, the company said in a statement.

“The implementation of our first share repurchase program reflects Fortinet’s confidence in the long-term strength and strategy of the company, as well as our commitment to returning shareholder value,” said Ken Xie, Fortinet’s Founder, Chairman and CEO. “Though we remain focused on continuing to invest in our business to capitalize on our growth opportunities, at the same time, Fortinet’s financial performance and healthy cash flow generation allows us to be confident and opportunistic in repurchasing shares.”

While the Board of Directors has authorized the share repurchase program, the company is not obliged to repurchase any shares under the authorization, and the program may be suspended, discontinued or modified at any time, for any reason and without notice, the Fortinet said.

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Microsoft Disrupts ZeroAccess Botnet

Posted on December 9, 2013 by in Security

Late last week, Microsoft announced it had struck a blow against the ZeroAccess botnet in a joint operation with law enforcement and technology company A10 Networks.

But while the effort may have started a ten-count, some say the botnet was far from knocked out.

The takedown operation disrupted a botnet that is held responsible for infecting more than two million computers by targeting search results on Google, Bing and Yahoo search engines and costing online advertisers $ 2.7 million a month. The botnet hijacks people’s search engine results and redirects them to sites they had not intended to go to in order to commit click fraud. ZeroAccess relies on a peer-to-peer infrastructure that allows cybercriminals to control it remotely through tens of thousands of different computers.

ZeroAccess Botnet TakedownTo combat the situation, Microsoft recently filed a civil suit against the people behind the botnet and received authorization from the U.S. District Court for the Western District of Texas to simultaneously block incoming and outgoing communications between computers located in the U.S. and the 18 identified Internet Protocol (IP) addresses being used to commit fraud. In addition, Microsoft took control of 49 domains associated with ZeroAccess, while A10 Networks provided Microsoft with advanced technology to support the disruptive action.

However, Microsoft’s work comes up short. In a joint blog post, Yacin Nadji, a Ph.D. Candidate at Georgia Institute of Technology, and Damballa Chief Scientist Manos Antonakakis noted that any meaningful action against ZeroAccess must disrupt its peer-to-peer (P2P) communications channel.

“Disabling the click-fraud component is trivially countered by the botmaster by simply pushing an updated binary over the P2P channel with fresh click-fraud configurations,” they noted. “This extensive legal work can be undone in a matter of hours.”

According to a report, the operators did push out a configuration file to infected systems to bring the click fraud network back online, but the within a few hours the servers were back offline.

Fears about click fraud led to the Interactive Advertising Bureau (IAB) recently issuing a set of best practices designed to help publishers, networks and buyers reduce the risk of fraud on the Internet.

“The companies that participate in the digital advertising supply chain have been struggling with how to handle criminal enterprises intent on gaming the system,” said Steve Sullivan, vice president of advertising technology for IAB, in a statement. “These fraudsters are diluting the value of all legitimate inventory while simultaneously diminishing the integrity of the entire digital marketing industry. The introduction of these best practices is a first step in reducing the marketplace repercussions of these illegal activities.”

Brian Prince is a Contributing Writer for SecurityWeek.

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