Daily Archives: January 3, 2015

Bitcoin skyrockets to $900 amid Senate scrutiny RT NEWS – Video

Posted: January 3, 2015 at 6:46 am


Bitcoin skyrockets to $900 amid Senate scrutiny RT NEWS
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Bitcoin Transactions Not Yet Entirely Anonymous

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A group of researchers in Luxembourg say they have found a way to uncover the identities of Bitcoin users. So how anonymous is the vaunted crypto-currency?

Bitcoin has been having some difficulty persuading consumers to use it for online transactions, but the virtual currency is nevertheless slowly starting to win people over. Bitcoin is a peer-to-peer system, which means there is no centralisation or control, and payments can be made rapidly across the world free of charge. Every users identity is hidden behind an encrypted pseudonym and an address, both of which can be changed on a regular basis to protect confidentiality. Against this background, a team of cryptographic experts working at the University of Luxembourg have been carrying out research in order to find out whether the system really guarantees anonymous transactions. Now the researchers, Alex Biryukov, Dmitri Khovratovich and Ivan Pustogarov, have just published a paper entitled Deanonymisation of clients in Bitcoin P2P network, in which they claim to have discovered a means of identifying users IP addresses.

The three cryptographers describe their method of finding out by whom or at least from which IP address a given transaction was being made. Focusing on the Tor security network used by many Bitcoin aficionados to protect their identity, they managed to disable Tor access to the users client by using deliberately malformed messages and were then able to get the Bitcoin server to reveal the IP address that was connecting to the Bitcoin entry nodes. Using this method, the researchers claim to have managed to de-anonymise up to 60% of all users targeted. They say a hacker could discover the identity of a Bitcoin user by spending just under 1,500 on an attack involving several computers, which means that most ordinary Internet users would not be able to exploit this weak point and only the most experienced and best equipped hackers will be able to get in through the loophole. Nevertheless, the aim of the Luxembourg team is not simply to point out deficiencies in the system but to help rectify the situation, and they are now working with the Bitcoin developers on new software designed to render transactions really secure and anonymous.

It will come as no surprise however to learn that people closely involved with the virtual currency are aware of potential privacy issues. Bitcoin is often perceived as an anonymous payment network. But in reality, Bitcoin is probably the most transparent payment network in the world, points out one of the first sites dedicated to the currency. For this reason a number of tools such as Darkwallet have already been developed with a view to enhancing the confidentiality of Bitcoin financial transactions. The Luxembourg research project is one of the very first efforts to test the limits of the crypto-currency but, given the obvious attractions of having an anonymous cash-like system for worldwide online transfers, it will doubtless not be the last. Meanwhile the revelations might well make people hesitate before embarking on such innovative ideas as preserving their DNA via the Bitcoin network, or even simply making micro-payments over the social networks, where a degree of confidentiality is a major requirement.

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Astronaut Releases Time Lapse From 166 Days Spent At International Space Station – Video

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Astronaut Releases Time Lapse From 166 Days Spent At International Space Station
The six minute video is made up from 2500 images that European Space Agency astronaut Alexander Gerst took while working at the ISS. (12/29/14)

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Happy New Year – International Space Station Message – Video

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Happy New Year - International Space Station Message
Expedition 42 New Year #39;s Message.

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Video: NASA astronaut assembles robonaut humanoid robot – Video

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Video: NASA astronaut assembles robonaut humanoid robot
NASA astronaut Terry Virts is shown setting up Robonaut, a humanoid robot developed by the Robotics Laboratory at NASA????s Johnson Space Center, on board the International Space Station....

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Alien Isolation (Nightmare) Part 2 – Video

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Alien Isolation (Nightmare) Part 2
PSN = acowboy11 Twitch.tv/acowboy11 Alien Isolation is set in 2137, 15 years after the events of Alien and 42 years prior to Aliens. The game follows Amanda Ripley, who is investigating the...

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Alien Isolation (Nightmare) Part 3 – Video

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Alien Isolation (Nightmare) Part 3
PSN = acowboy11 Twitch.tv/acowboy11 Alien Isolation is set in 2137, 15 years after the events of Alien and 42 years prior to Aliens. The game follows Amanda Ripley, who is investigating the...

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Alien Isolation (Nightmare) Part 3 - Video

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Earth From Space – January 2nd-3rd 2015 – Live Views From the International Space Station – Video

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Earth From Space - January 2nd-3rd 2015 - Live Views From the International Space Station
Earth From Space - January 2nd-3rd 2015 - Live Views From the International Space Station.

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Boris Morukov, Veteran Cosmonaut Who Led Mock Mars Mission, Dies at 64

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Russian cosmonaut Boris Morukov, a physician who visited the International Space Station and led a 520-day simulated Mars mission, died Thursday (Jan 1). He was 64.

Boris Morukov's death was reported by the Russian Academy of Sciences Institute for Biomedical Problems (IBMP), where he served as the deputy director of science since 2006. A cause of death was not given.

"Morukov will forever remain in our hearts as a talented scientist, brilliant organizer and kind, sympathetic person," IBMP officials said in a statement.

Selected in January 1989 with the fifth group of Russian doctors to train as research cosmonauts, Morukov made his only spaceflight in September 2000 onboard the U.S. space shuttle Atlantis. As an STS-106 mission specialist, Morukov helped to outfit the International Space Station's Russian-built Zvezda service module in preparation for the arrival of the outpost's first expedition crew later that same year.

During the flight, Morukov was tasked with unloading more than 1,300 lbs. (600 kilograms) of supplies that were earlier launched onboard a Russian Progress cargo ship. He also assisted with moving equipment from the shuttle Atlantis to the space station. [Giant Leaps: Biggest Milestones of Human Spaceflight]

As part of that work, Morukov and NASA astronaut Daniel Burbank resorted to using a hammer and chisel to remove some rivets holding a floor bracket in the Russian Zarya functional cargo block (FGB). Finally freeing the panel, the cosmonaut and astronaut were then able to replace a unit controlling the flow of current from one of the module's six batteries.

One of only two flown Russian cosmonauts to never fly on a Russian spacecraft, Morukov logged a total of 11 days, 19 hours and 10 minutes in space. He remained an active cosmonaut for seven years after returning to Earth, retiring from the corps in November 2007.

Boris Vladimirovich Morukov was born on Oct. 1, 1950 in Moscow. He received his doctorate of medicine from the Second Moscow Medical Institute (now Moscow Medical University) in 1973, he received a Ph.D. in space, aviation and naval medicine six years later.

Morokuv joined the IBMP as a researcher in 1978, where he provided medical support for crewed space missions. From 1979 to 1980, he worked as a staff member in the TsUP Mission Control Center, supporting the cosmonauts working onboard the Russian space station Salyut 6.

Morukov's medical research at IBMP primarily focused on the crew members' metabolic changes in the microgravity environment of space. To that end, he organized a series of experiments, including a 370-day study dedicated to the testing of an experimental countermeasure to the negative effects of spaceflight.

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Scalpel. Check. Robot. Check. NASA bots, one day, may operate in space

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NASA wants a humanoid robot that can perform CPR, draw blood and operate on astronauts aboard the International Space Station or en route to Mars.

A doctor at the Houston Methodist Research Institute is working to make that happen.

The humanoid robot, Robonaut, developed by NASA, is in training at the Houston Methodist Research Institute to perform medical procedures in space -- someday. (Photo: NASA)

"We're trying to get the best care for our astronauts, who are risking their lives to push the boundaries in space," said Dr. Zsolt Garami, an instructor at the Houston Methodist Research Institute, an arm of Houston Methodist Hospital. "Our motivation was really when we saw astronauts perform ultrasounds on each other or on themselves. They just could use an extra hand.... Why not have a robot help? There's already a robot up in the space station, and he's already shown that he can switch buttons reliably. Why not make him a nurse or a physician?"

Garami is working with NASA to teach robots how to perform medical procedures. He said the robots are quick learners -- much quicker than his human students.

Robonaut, the robot Garami is working with, learned in two hours what humans take a week to learn. That hasn't been a popular observation with his colleagues.

"Robonaut is learning extremely fast," he told Computerworld. "His motions, without shaky hands, are very precise and gentle. There were no sudden motions."

The humanoid robot that Garami is working with is a twin to Robonaut 2, or R2, which was brought to the space station early in 2011.

It took about 11 years to build the 300-lb. robot, which runs on 38 PowerPC processors, including 36 embedded chips that control its joints. Each of the embedded processors communicates with the main chip in the robot.

Garami said he hasn't yet worked with Robonaut 2 on the space station, but he is confident that the space-dwelling robot won't have any trouble. His work with Robonaut on the ground has gone extremely well.

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Scalpel. Check. Robot. Check. NASA bots, one day, may operate in space

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