History[ edit ] In , Ash Bhat and Rohan Phadte, both undergraduates at the University of California, Berkeley , began developing online tools to help combat the spread of misinformation on the Internet. The first, NewsBot, was an app for Facebook Messenger that attempts to identify the political leanings in a news story. The second, BotCheck. It uses machine learning and natural language processing to assess the probability that a Twitter account is a bot spreading political propaganda.
|Published (Last):||2 February 2017|
|PDF File Size:||6.19 Mb|
|ePub File Size:||17.94 Mb|
|Price:||Free* [*Free Regsitration Required]|
History[ edit ] In , Ash Bhat and Rohan Phadte, both undergraduates at the University of California, Berkeley , began developing online tools to help combat the spread of misinformation on the Internet. The first, NewsBot, was an app for Facebook Messenger that attempts to identify the political leanings in a news story. The second, BotCheck.
It uses machine learning and natural language processing to assess the probability that a Twitter account is a bot spreading political propaganda. Bhat and Phadte believed that their model, which attempted to identify and differentiate between human and bot posting patterns, had achieved a But at the same time they had noticed another problem: Many of the bots were sharing altered images to support their positions, and it was hard to identify them.
The problem was compounded by the use of unaltered images that were represented as being about something other than what they depicted. With the extension enabled, a user can hover their mouse over a photograph; it will then be compared to others in a data base of hashes of all the images on every page any browser with the extension has visited and those hosted on a list of a hundred websites considered to be trusted sources.
RoBhat believes that if it can get several hundred thousand users to install SurfSafe it will, through this method, accumulate a data base of a hundred billion images within a year. It also analyzes any text on the page and compares it with text on pages where the image has also appeared. Two months later they made it available to the public. Wired noted that the underlying problem is digital literacy.
A user who had chosen to trust only those sites considered dubious, he had told The Atlantic when the extension was presented at Aspen, would eventually notice that the news from those sites conflicted with each other and might thus start to doubt their reliability.
However, he allowed, if SurfSafe started to develop a community that elevated less reliable news outlets to a position of high trust, RoBhat would update its models. However, he considered that a small problem, since the images the extension aims to spot are those that spread virally , meaning many people will be looking at them in a short period of time. Constitution it had actually been some shooting targets.
While SurfSafe easily recognized the most widely circulated copy of the first image, it did not similarly flag variants, which had also widely circulated on Facebook , that had been cropped or were screenshots of the image taken from elsewhere. Acknowledging that it was a response to a real problem, he warned that it was complex and that "this desire for a fast, simplified solution opens the door for lots of snake-oil solutions and charlatan products.
Nor did the getsurfsafe.
Introduction to Network Security (Charles River Media Networking/Security)
Batilar GB Free format text: HK Ref legal event code: EP Ref country code: The second part of the work combines the gained theoretical insight with methods for the synthesis of radiating elements to develop three specific antenna systems. Antennentechnik ABB Bad Blankenburg GmbH is a technology company in communications technology that develops solutions and products along the megatrends of the telecommunication industry and networked Industry 4. Since both antenna arrays are designed for applications in commercial sensor or wireless communication systems, the low-cost microstrip technology is chosen for the realization of the radiating elements. Builds Business. Country of ref document: US USA en Das Antennen-Set deckt extreme Frequenzbereiche von In the first case the focus is on a circular array of monopoles for mobile radio channel measurements.
INTRODUCTION TO NETWORK SECURITY NEAL KRAWETZ PDF
All of the fundamental issues needed to understand network security, including the definition of security terms, security ethics, the OSI network model, and cryptography for networks are covered in detail. Introduction to Network Security. The last part netaork the book explores the common risks for secure network design and development, including the impact of modularity on security and a summary of the general security issues. Read, highlight, and take notes, across web, tablet, and phone. The book teaches you the skills and knowledge you need to design, develop, implement, analyze, and maintain networks and network protocols.
Computer Networks and Information Security
Weaknesses within networks have led to the rapid growth of identity theft and computer virus outbreaks, so the demand for skilled and aspiring system administrators who can protect networks is growing. If you are tasked with protecting your networks from these threats, or are studying security, Introduction to Network Security will help you increase your understanding of potential threats, learn how to apply practical mitigation options, and react to attacks quickly. The book teaches you the skills and knowledge you need to design, develop, implement, analyze, and maintain networks and network protocols. It explains how these systems currently operate and the limitations that lead to security weaknesses. All of the fundamental issues needed to understand network security, including the definition of security terms, security ethics, the OSI network model, and cryptography for networks are covered in detail.