By Soulskill from Slashdot's good-enough-for-an-A department
sends this report from CNET:Researchers at the University of California Riverside Bourns College of Engineering and the University of Michigan have identified a weakness they believe to exist across Android, Windows, and iOS operating systems that could allow malicious apps to obtain personal information. Although it was tested only on an Android phone, the team believes that the method could be used across all three operating systems because all three share a similar feature: all apps can access a mobile device's shared memory. "The assumption has always been that these apps can't interfere with each other easily," said Zhiyun Qian, an associate professor at UC Riverside. "We show that assumption is not correct and one app can in fact significantly impact another and result in harmful consequences for the user." To demonstrate the method of attack, first a user must download an app that appears benign, such as a wallpaper, but actually contains malicious code. Once installed, the researchers can use it to access the shared memory statistics of any process (PDF), which doesn't require any special privileges.Read Replies (0)
By Soulskill from Slashdot's in-before-correlation-!=-causation department
An anonymous reader sends word of correlation found between higher internet speeds and higher test scores
. Quoting:The numbers—first crunched by the Internet provider comparison site HSI — show a distinct trend between faster Internet and higher ACT test scores. On the high end, Massachusetts scores big with an average Internet speed of 13.1Mbps, and an average ACT test score of 24.1. Mississippi, on the other hand, has an average speed of just 7.6Mbps and an average score of 18.9.
In between those two states, the other 48 fall in a positive correlation that, while not perfect, is quite undeniable. According to HSI's Edwin Ivanauskas, the correlation is stronger than that between household income and test scores, which have long been considered to be firmly connected to each other. The ACT scores were gathered from ACT.org, which has the official rankings and averages for the 2013 test, and the speed ratings were taken from Internet analytics firm Akamai's latest report.Read Replies (0)
By samzenpus from Slashdot's biggest-heatsink department
writes with news about a study that may account for a slowdown in air temperature rises. Following rapid warming in the late 20th century, this century has so far seen surprisingly little increase in the average temperature at the Earth's surface. More than a dozen theories have now been proposed for the so-called global warming hiatus, ranging from air pollution to volcanoes to sunspots. New research from the University of Washington shows the heat absent from the surface is plunging deep in the north and south Atlantic Ocean, and is part of a naturally occurring cycle. The study is published in Science. Subsurface ocean warming explains why global average air temperatures have flatlined since 1999, despite greenhouse gases trapping more solar heat at the Earth's surface. "Every week there's a new explanation of the hiatus," said corresponding author Ka-Kit Tung, a UW professor of applied mathematics and adjunct faculty member in atmospheric sciences. "Many of the earlier papers had necessarily focused on symptoms at the surface of the Earth, where we see many different and related phenomena. We looked at observations in the ocean to try to find the underlying cause." What they found is that a slow-moving current in the Atlantic, which carries heat between the two poles, sped up earlier this century to draw heat down almost a mile (1,500 meters). Most previous studies focused on shorter-term variability or particles that could block incoming sunlight, but they could not explain the massive amount of heat missing for more than a decade.Read Replies (0)