Entries with tag university of michigan.

US Researchers Release Rapid Internet Scanning Tool

University of Michigan researchers have created a tool that uses  a conventional server to conduct a scan of every Internet address in only 44 minutes. Zmap can be used by anyone with a fast internet connection. A tool called Nmap, used most notably in 2010 by the Electronic Frontier Foundation to determine the use of encryption online, conducted an Internet-wide scan in two to three months. The pace at which it works is slower because it keeps records for each outstanding request in the process. ZMap, by contrast, is a stateless process that has less overhead. The researchers say this allows packets to be sent 1,000 times faster than Nmap. It also gives them the 44-minute Internet scan. The researchers demonstrated the tool through several Internet-wide scanning experiments, including one to determine the pace at which organizations are deploying encrypted HTTPS and another that looked for host devices still using Universal Plug and Play following wide disclosure that it had a vulnerability. The researchers presented their findings at the recent Usenix security conference in Washington. (SlashDot)(The Washington Post)(ZMap)

Scientists Develop New Multilayered Superconductive Material

A group of US scientists has developed a multilayered superconducting material they say can be tailored to an application’s specific needs. The group, headed by University of Wisconsin-Madison professor Chang-Beom Eom, used an iron and nitrogen-based material called pnictide, which has a higher effective operating temperature than conventional superconducting materials such as niobium, lead, or mercury. Typically, superconductors work only in very cold conditions. This new material has 24 alternating layers of metal and oxide—pnictide and strontium titanate —placed with atomic precision to form an engineered superlattice, which could work in electronic devices, as well as in transportation, power transmission, generation and storage because they are able to transport large electrical current and produce great magnetic fields. Florida State University and University of Michigan researchers contributed to the work, which appears in the online edition of the journal Nature Materials. (EurekAlert)(University of Wisconsin-Madison)(Nature Materials)

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