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Twitter India celebrates rising women achievers. Pixabay

In a bid to highlight security flaws in Twitter, Britain-based Insinia Security temporarily hijacked several celebrity and journalist accounts active on the micro-blogging site.

According to a report in The Telegraph, messages appeared on several celebrity and journalist accounts on Thursday with the words: “This account has been temporarily hijacked by INSINIA SECURITY.”


To take control of the accounts, the researchers at the company used fake SMS verification that made it appear as if they belonged to the account owners, said the report.

Insinia said it successfully hijacked the accounts of a number of celebrities, including Eamonn Holmes, Louis Theroux, Simon Calder and Saira Khan among others.


Twitter on a smartphone device. Pixabay

A simple method allowed it to send tweets, direct messages, retweet and like tweets, follow and unfollow people, according to the company which warned that the vulnerability could be easily exploited by nation states, hackers and organised crime groups.

The vulnerability could be used to “spread fake news and disinformation via influential celebrities and journalists”, Insinia warned in a blog post.

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While Twitter has not yet officially reacted to the threat, Insinia recommended that users should meanwhile remove their phone number from the Twitter account.

“Twitter should completely remove this functionality (SMS verification) as users rely on their phone added to account for two-factor authentication,” Insinia said. (IANS)


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Milky Way galaxy as seen from Chitkul Valley

NASA's Chandra X-ray Observatory has for the first time spotted signs of a planet transiting a star outside of the Milky Way galaxy, opening up a new avenue to search for exoplanets at greater distances than ever before.

The possible exoplanet -- or planets outside of our Solar System -- candidate is located in the spiral galaxy Messier 51 (M51), also called the Whirlpool Galaxy because of its distinctive profile, NASA said in a statement.

Astronomers have, so far, found all other known exoplanets and exoplanet candidates in the Milky Way galaxy, almost all of them less than about 3,000 light-years from Earth.

An exoplanet in M51 would be about 28 million light-years away, meaning it would be thousands of times farther away than those in the Milky Way, NASA said.

"We are trying to open up a whole new arena for finding other worlds by searching for planet candidates at X-ray wavelengths, a strategy that makes it possible to discover them in other galaxies," said Rosanne Di Stefano of the Center for Astrophysics at Harvard and Smithsonian (CfA) in Cambridge, Massachusetts, who led the study.

The findings are published in the journal Nature Astronomy.

The exoplanet candidate was spotted in a binary system called M51-ULS-1, located in M51. This binary system contains a black hole or neutron star orbiting a companion star with a mass about 20 times that of the Sun. The X-ray transit they found using Chandra data lasted about three hours, during which the X-ray emission decreased to zero.

Based on this and other information, the team estimates the exoplanet candidate in M51-ULS-1 would be roughly the size of Saturn and orbit the neutron star or black hole at about twice the distance of Saturn from the Sun.

The team looked for X-ray transits in three galaxies beyond the Milky Way galaxy, using both Chandra and the European Space Agency's XMM-Newton. Their search covered 55 systems in M51, 64 systems in Messier 101 (the "Pinwheel" galaxy), and 119 systems in Messier 104 (the "Sombrero" galaxy).

However, more data would be needed to verify the interpretation as an extragalactic exoplanet. One challenge is that the planet candidate's large orbit means it would not cross in front of its binary partner again for about 70 years, thwarting any attempts for a confirming observation for decades, NASA said.

Named in honor of the late Indian-American Nobel laureate, Subrahmanyan Chandrasekhar, the Chandra X-ray Observatory is the world's most powerful X-ray telescope. It has eight times greater resolution and is able to detect sources more than 20-times fainter than any previous X-ray telescope.

Known to the world as Chandra (which means "moon" or "luminous" in Sanskrit), Chandrasekhar was widely regarded as one of the foremost astrophysicists of the twentieth century. (IANS/JB)


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