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Zeitgeist 2007: the most searched words on Google |
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Written by gnoma
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Tuesday, 22 January 2008 |
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At the end of each year the largest search engine of the world gives the list of the most sought words during the 12 past months. The list contains the terms more investigated on the web, those that became famous throughout 2007 and those that have lost interest. The estimate is carried out through a careful and accurate analysis of all the words searched and provides not only a numerical result, but also a portrait of today society and of its way of thinking, identifying which events, words, characters, objects have been more significant in the last 12 months. |
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Last Updated ( Tuesday, 29 January 2008 )
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Written by bluewitch
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Tuesday, 22 January 2008 |
The acronym stands for Solid State Disks and if you surf the Internet you will find that
most web definitions describe an SSD as a high-performance plug-and-play storage device that contains no moving parts. The absence of mechanical arms and spinning platters is the reason behind its reliability, its strong reduction of power consumption that makes it the ideal solution for mobile devices, such as PDAs, notebooks, etc. and its lower heat generation. |
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Written by gnoma
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Tuesday, 22 January 2008 |
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SEO stands for search engine optimization and is the process used to improve the volume and yhe quality of the traffic to a web site from search engines via “natural” (”organic” or “algorithmic”) search results for targeted keywords. The activities of optimization of a web site concern all the elements that compose it: url, Layout, graphic, markup, content, technologies of interaction. In sites of large or particularly complex dimensions, in fact, the figure of SEO remains in close contact with the team, requiring specific professionalism that is difficult to find in a single person. |
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Keyloggers are extremely dangerous |
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Written by cecco
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Tuesday, 22 January 2008 |
A keylogger is an application program designed to record what you digit on your keyboard. It is classified as a spyware because it is usually programmed to store your passwords, your credit card number and in general your private data. After a first recording phase, a keylogger will send your data out of your local computer through the internet connection, making available your records to the ones who developed that spyware.
So you must absolutely avoid keyloggers: one solution could be a firewall which is able to block outgoing network traffic. Another one could be the simple installation of spyware detection and removal programs. |
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Written by cecco
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Tuesday, 22 January 2008 |
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Phishing is an attack which tries to capture your username and password of a bank service in which you are registered. This attack works as follow. The attacker build a web site which has the same look as a well known bank transaction service, such as PayPal. Then he retrieves thousands of email addresses and sends each of them a message that seems to be sent by the bank service itself. |
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Last Updated ( Tuesday, 29 January 2008 )
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SYN Flood: definition and defense |
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Written by cecco
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Tuesday, 22 January 2008 |
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This is a kind of Denial Of Service attack which involves TCP/IP three way handshake. An attacker (A) begins a connection with a victim (B) by sending a SYN packet with the return address set to an unreachable host (C). Since the operating system of the victim allocates a chunk of memory for the half open connection with C, then if the attacker sends lots of SYN packet with different return addresses it will exhausts the memory of the victim’s operating system. So any further legitimate requests to establish a connection to the victim host will not be served because the victim has a full queue connection. The key point here is that the attacker sets return addresses of each SYN packet with an ip of an unreachable hosts, which forces the victim’s operating system to keep the connection half open until (a usually long) timeout occurs. |
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