Introduction SPAM is the name given to unwanted messages that arrive by e-mail, messengers such as WhatsApp, social networks, areas of comments of blogs, and so on. The practice of SPAM is so common that it is virtually...
Introduction Even people less familiar with the technology know that the the Internet is not a “territory” free of hazards. It is for this reason that it is important to know and use the tools protection for...
Introduction One of the things that makes it secure the operating system GNU/Linux (in fact, any Unix-based system), is its requirement that each thing has the owner and permissions of use. Thus, to be possible to restrict or...
Introduction The memory is DDR (Double Data Rate) is the default, which replaced the traditional memories SDR SDRAM (further referred to as “memories SDRAM” or, still, as “memories DIMM”), being very well received by the market especially in the segment...
Introduction The messages considered to be phishing (or phishing scam) are among the biggest dangers of the Internet. These attempts of fraud arriving by e-mail, social networks, WhatsApp and the like, and may result in serious consequences to victims, especially...
Introduction The evolution of technology, the heating — or the slowdown — the economy, the increase in the supply of credit and reach new markets are among the factors that increase significantly the competitiveness of...
Introduction Operating systems based on Linux there are the mountains, with some of them being quite popular as Ubuntu or Fedora, example. There are many people that use these systems in their personal computers, but it is easier...
Introduction The name says it all: the sound cards are the devices responsible by providing the audio generated in your computer. At the beginning of the the era of PCs, this item is not existed – the...
Introduction The Internet is a medium of communication fantastic: with it, we can do shopping, meet people, study, etc. But, being so comprehensive, the “world online also can offer the dangers of various kinds. One of them is...
You enter an online store, only gives a look at a certain product, and exits. Times later, you receive an e-mail that the same store with a link to continue the purchase. Many times, the message...
Introduction DVD is the acronym for Digital Versatile Disc or The Digital Video Disc. It is a media for storage of data that is also widely used for distribution of films. In this text, you’ll learn the the main types of existing DVDs...
Introduction The permissions are one of the most important aspects of Linux (in fact, all Unix-based systems). They are used for various purposes, but serve primarily to protect the system and the files of the users. Manipulate permissions is an...
Introduction The video projectors allow the display of the screen the computer (or other device) in a manner enlarged on a wall or on a screen appropriate. In this way, it is possible to all are present...
Introduction More than simply store data, solutions storage should provide access to information efficiently, in a timely manner and, depending on the case, offering some kind of protection against failures. Is at this point that the systems RAID (Redundant Array of Independent...
Introduction Bogus offers of employment are common in any season, but increase considerably in times of economic crisis, after all, the number of layoffs it makes a lot of people search for vacancies desperately. Many “rogues” take advantage in...
Introduction In this second part, about understanding and use of permissions on Linux, we will work with the command umask, chown , and chgrp. The first command allows you to manipulate the default permissions (default) the system, the second is used...
Introduction Ransomware is a type of malicious software (malware) created with the order to block access to files or systems only release them after the payment of a specified value. It is as if it were a kidnapping,...
Introduction Credit cards are synonymous with practicality. With them, you can pay for expenses without having to walk with cash or cheque and, in online shops, many sometimes it is possible to receive the product more quickly by...
Have you ever wondered what would happen if the system of your bank to stay hours without work? What would the consequences be if your Internet service provider Internet access lost data of their customers? Already he thought about...
Introduction Have you ever stopped to think about the amount and variety of the data that we generate and store each day? Banks, insurance companies airlines, telecom operators, search services online networks and retailers are just a few...