first_imgmike melanson Top Reasons to Go With Managed WordPress Hosting 8 Best WordPress Hosting Solutions on the Market The long and short of it this morning is don’t go to Twitter.com. The site is currently experiencing what might be a number of security issues, with the most obvious one being a security exploit pointed out by security firm Sophos, that can execute code when you mouseover a link in your Twitter feed. The security flaw is an XSS, or cross-scripting, exploit that allows malicious Javascript to be inserted into a tweet, which can then run code on your computer.According to severalsources, the exploit has quickly changed over time this morning, and users do not even need to mouseover a link to be affected by the flaw. Update: 10:40 AM – Twitter has posted a full explanation of today’s incident. Update: 7AM – Twitter now says that the XSS attack has now been “identified and patched”.We’ve identified and are patching a XSS attack; as always, please message @safety if you have info regarding such an exploit.We expect the patch to be fully rolled out shortly and will update again when it is.Already, Favstar has seen more than 24,000 retweets of one particular implementation of the bug. A quick look at the trending topics this morning shows quite how quickly the exploit has spread, with “Exploit”, “Security Flaw”, “Mouseover”, “Onmouseover” and “XSS” taking up five of the top 10 topics. Both Mashable and TechCrunch report having seen the exploit used to open pop-up windows, redirect users to porn sites and simply do “funny, rick-rolling type stuff”, but the nature of the exploit appears to be changing quickly as the morning goes on. Goerg Wicherski, a Kaspersky Lab Expert writing on the exploit warns that users should turn off Javascript for Twitter. “It is possible to load secondary Javascript from and external URL with no user interaction, which makes this definitely wormable and dangerous,” he writes.Twitter user Judofyr noted earlier this morning that there appeared to be an “ugly XSS hole in Twitter right now” and now says that, as far as he knows, he “started the first worm” but can’t say for sure.For now, if you really need to feed the Twitter addiction, it appears that third-party clients are standing up against the attack, so go with that. But the best bet with the website (although the new Twitter.com doesn’t appear affected) is to avoid it until further notice. A Web Developer’s New Best Friend is the AI Wai…center_img Related Posts Tags:#news#web Why Tech Companies Need Simpler Terms of Servic…last_img read more

first_img Dr. Chris Berry/Cardiff University By Dennis NormileOct. 23, 2017 , 3:00 PM The world’s first trees grew by splitting their guts Peter Geisen Scientists have discovered some of the best preserved specimens of the world’s first trees in a remote region of China. At up to 12 meters tall, these spindly species were topped by a clump of erect branches vaguely resembling modern palm trees and lived a whopping 393 million to 372 million years ago. But the biggest surprise is how they got so big in the first place.Today’s trees grow through a relatively simple mechanism. The trunk is a single cylindrical shaft made up of hundreds of woody strands called xylem, which conduct water from the roots to the branches and leaves. New xylem grow in rings at the periphery of the trunk just behind the bark, adding girth so the tree can get taller.This is not how ancient trees known as cladoxylopsids grew, however. Two specimens discovered in a desert in China’s northwestern Xinjiang province in 2012 were remarkably well preserved. That’s because they underwent a process in which silica—likely emitted by a nearby volcano—saturated the tree and took on the shape of the wood’s internal structure as it decayed, preserving its 3D cellular structure.Sign up for our daily newsletterGet more great content like this delivered right to you!Country *AfghanistanAland IslandsAlbaniaAlgeriaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBolivia, Plurinational State ofBonaire, Sint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBrunei DarussalamBulgariaBurkina FasoBurundiCambodiaCameroonCanadaCape VerdeCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos (Keeling) IslandsColombiaComorosCongoCongo, The Democratic Republic of theCook IslandsCosta RicaCote D’IvoireCroatiaCubaCuraçaoCyprusCzech RepublicDenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEthiopiaFalkland Islands (Malvinas)Faroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHeard Island and Mcdonald IslandsHoly See (Vatican City State)HondurasHong KongHungaryIcelandIndiaIndonesiaIran, Islamic Republic ofIraqIrelandIsle of ManIsraelItalyJamaicaJapanJerseyJordanKazakhstanKenyaKiribatiKorea, Democratic People’s Republic ofKorea, Republic ofKuwaitKyrgyzstanLao People’s Democratic RepublicLatviaLebanonLesothoLiberiaLibyan Arab JamahiriyaLiechtensteinLithuaniaLuxembourgMacaoMacedonia, The Former Yugoslav Republic ofMadagascarMalawiMalaysiaMaldivesMaliMaltaMartiniqueMauritaniaMauritiusMayotteMexicoMoldova, Republic ofMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmarNamibiaNauruNepalNetherlandsNew CaledoniaNew ZealandNicaraguaNigerNigeriaNiueNorfolk IslandNorwayOmanPakistanPalestinianPanamaPapua New GuineaParaguayPeruPhilippinesPitcairnPolandPortugalQatarReunionRomaniaRussian FederationRWANDASaint Barthélemy Saint Helena, Ascension and Tristan da CunhaSaint Kitts and NevisSaint LuciaSaint Martin (French part)Saint Pierre and MiquelonSaint Vincent and the GrenadinesSamoaSan MarinoSao Tome and PrincipeSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSint Maarten (Dutch part)SlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth Georgia and the South Sandwich IslandsSouth SudanSpainSri LankaSudanSurinameSvalbard and Jan MayenSwazilandSwedenSwitzerlandSyrian Arab RepublicTaiwanTajikistanTanzania, United Republic ofThailandTimor-LesteTogoTokelauTongaTrinidad and TobagoTunisiaTurkeyTurkmenistanTurks and Caicos IslandsTuvaluUgandaUkraineUnited Arab EmiratesUnited KingdomUnited StatesUruguayUzbekistanVanuatuVenezuela, Bolivarian Republic ofVietnamVirgin Islands, BritishWallis and FutunaWestern SaharaYemenZambiaZimbabweI also wish to receive emails from AAAS/Science and Science advertisers, including information on products, services and special offers which may include but are not limited to news, careers information & upcoming events.Required fields are included by an asterisk(*)The fossils reveal that, unlike modern trees with a single shaft, cladoxylopsids had multiple xylem columns spaced around the perimeter of a hollow trunk. A network of crisscrossing strands connected the vertical xylem—much like a chain-link fence spreads from pole to pole—and soft tissue filled the spaces between all these strands. New growth formed in rings around each of the xylem columns while an increasing volume of soft tissue forced the strands to spread out.All of this expanded the girth of the trunk, allowing for a taller tree. But it also split apart the tree’s xylem skeleton, which required the tree to continually repair itself, the team reports today in the Proceedings of the National Academy of Sciences. The weight of the tree squeezed tissue at the base of the trunk outward. center_img An artist’s impression of a stand of cladoxylopsida trees, which formed Earth’s first forests. In the largest of the two fossil trunks, above the bulge, the xylem and soft tissue occupied a ring about 50 centimeters in diameter and 5 centimeters thick, with external roots making up the remainder of the 70-centimeter-diameter tree trunk. The scientists estimate cladoxylopsids could have been 8 to 12 meters tall.This growth strategy has not been seen in any other tree in Earth’s history, says Xu Hong-He, a paleontologist at the Nanjing Institute of Geology and Paleontology in China who discovered the fossilized tree trunks. “It’s crazy that the oldest trees also had the most complex growth strategy,” adds Christopher Berry, a plant paleontologist at Cardiff University in the United Kingdom who helped analyze the fossils.The trees are particularly important, says Berry, because they dominated Earth during the Devonian period from 419 million to 358 million years ago. They formed the first forests and played a key role in absorbing carbon dioxide from the atmosphere. They also added oxygen to the atmosphere, affecting the climate and influencing conditions that fostered the emergence of other life forms, he says. Despite their early critical role in the evolution of life on Earth, the cladoxylopsids do not have any modern descendants. They disappeared at the end of the Devonian period, perhaps because they were left in the shade of taller, more robust trees, or because changing environmental conditions may have favored Archaeopteris, the ancestors of modern trees that appeared about 385 million years ago.The new study is an important step in solving several such mysteries about early Earth, says Brigitte Meyer-Berthaud, a paleobotanist at the University of Montpellier in France who was not involved in the research. To understand the role of cladoxylopsids on our planet’s past, she says, “it is essential to know how the trees are constructed.” Fossilized slices of a 374-million-year-old tree reveal a hollow core surrounded by numerous bundles of woody strands called xylem (the larger black spots), with soft tissue (in gray) between. The smaller black dots are roots.last_img read more

first_imgThe ousted Kochi team of Indian Premier League (IPL) has challenged the Board of Control for Cricket in India’s (BCCI) decision in the Bombay High Court.The battle between Kochi Tuskers management and the BCCI entered the legal space two days after the team’s termination from the IPL.The high court was expected to pass an order on the case later on Wednesday.The BCCI had on Monday terminated the contract with Kochi Tuskers for non-payment of dues and citing violation of terms by the franchise. However, the Kochi team maintained they were unfairly treated by the BCCI.Co-owners of the Kochi Tuskers cried foul saying that the BCCI jumped the gun, especially since the deadline for payment of dues ends on September 30.Kochi Tuskers have become the third IPL franchise to take the BCCI to court after the Rajasthan Royals and Kings XI Punjab challenging the board’s order of termination late last year.last_img read more