Present day viruses
There are a huge number of computer viruses in the world. To establish their exact number (along with all modifications and upgrades) no one is taken. Instead, it is customary…

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How to protect your password from hacking
Today, passwords play a significant role in human life. Everywhere on the Internet, on every site, each account must have its own password in order for the user to gain…

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The allowable marginal cost of the targeted action of the visitor on the site.
Website performance is measured not by the site’s position in the TOP, and not by the number of visitors, although most often site owners track and pay for these metrics.…

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also an interesting blog

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Local Area Networks and the Internet

When a local area network is connected to the global Internet, one of the PCs, called a server, becomes a kind of conductor and connects to the Internet using a modem or in some other way, while other computers operate through it, they are also called workstations. Just like any of us has a mailing address where we receive mail letters, each computer is assigned an IP address for functioning in the Internet environment, but usually it has only a computer conductor directly connected to the Internet.

If the computer is connected through a modem, it usually receives a dynamic address from the service provider. It is assigned automatically and is valid for a specific time. While there is also a static address, a permanent address for an unlimited period of use. At least two network devices are usually connected to the gateway computer (server): a modem and a network card, so it actually has two IP addresses, real and internal, which the network card receives on the local network. Continue reading

All the information about you is … on the Internet

The fact that computers have long and reliably entered the lives of almost every person no longer surprises anyone. This “iron” makes us capable of many things: it allows us to expand our horizons, improve our skills, and receive various kinds of information without much effort.

But the more we use a computer, the more acute the problem of computer security becomes. Indeed, a computer that is not connected to the network itself can hardly be at risk of data hacking or virus infection. Is it that an inept user will forget to check for a “contagion” flash drive or other removable storage medium. That is, the main threat to computer security outside the network is viruses of all types and stripes.

Your “footprints” on the net
But with the first Internet connection, there are many more threats than ordinary viruses. You think that registration on all kinds of sites is a waste of time and does not threaten anything, that your surfing on various web resources cannot be tracked, and no one knows which pages you regularly visit. However, each registration on the forum, in chat or in the “contact”, the entrance to the online store or viewing blogs leaves its “mark” in the network space. Continue reading

If you blocked the site at work

So a person is arranged that the productivity of his activity is directly related to how often he rests, how much time he devotes to relaxation.

Any office employee during the working day gets tired more morally than physically, because conflict situations, decision making, creative manifestations and even just continuous monotonous work, you see, are unlikely to have a positive impact on labor efficiency. We all like these or those sites where we strive to look at a free time, someone prefers forums, and someone likes to chat in a chat.

All this applies to stress relievers, relaxation, stress relievers, helps to be distracted for a short time, so that we can take on the tasks and goals set by the company with renewed vigor. And, of course, all of the above applies to those cases when this is not to the detriment of the work itself. But we are increasingly faced with misunderstanding and prohibitions from our employers, which is confirmed by the emerging boom of blocking social networks for access from the workplace, in particular the most popular, such as Odnoklassniki and Vkontakte. Continue reading

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