# Facts | How do cloud antivirus?




# Facts | How do cloud antivirus?

Computers have long been in the everyday reality. Long gone the days when computer-sufficient in itself was cause for admiration. But the joy of the possibility of such a wonderful thing to use is accompanied by concerns. The most important of these troubles is to protect your computer from malicious viruses. On the anti-virus software today knows almost everyone. Among the users became particularly popular debate about what kind of applications it is better to perform its tasks and to a lesser extent, “straining” the computer. Over time, more and more services move from the local hard disk to a remote server. So today we’ll talk about the “anti-cloud.” These services protect your computer while sometimes thousands of miles away.

The principles of cloud antivirus

Thanks to the efforts of Stephanie Crawford (Stephanie Crawford) on the resource HowStuffWorks appeared fairly detailed overview of cloud-based anti-virus solutions. This review fully deserves attention and detailed consideration, as it addresses all the main features of this relatively new category of services.

First, some terminology. Virus is a program that is installed on the computer itself and makes the data contained on it undesirable changes. The main source of viruses in the current reality is the internet.

To protect your data from malicious code, people use anti-virus software. Today, you can use not only to be installed in your computer anti-virus applications, but also cloud antivirus tools. Processes of this software mostly occur on a remote web server, rather than on the hard disk of a computer.

Cloud Antivirus is a set of client applications and Web services. Both parts of the anti-virus work together. The client – a small program that runs on the user’s computer and scans the system, checking whether it is infected with malicious code. It is known that traditional anti-virus programs installed on the computer are “hogs”, but client programs cloud antivirus require much less computing power.

Web Services Cloud Antivirus is located on the Internet, on one or more servers. Most of the data-processing tasks he performs it, so the user’s computer does not have any process or store large amounts of information. At regular intervals, the client program scans your computer. The essence of the scan is to look for malicious code whose information is in a database Web service.

Now we list the advantages enjoyed by cloud antivirus compared to the traditional:

The client program has access to the most recent data on malicious code after only a few minutes after the issue has “learned” a web service. No need to constantly update your antivirus software.
The client program is very small and is satisfied with little computational power. Consequently, it does not distract from the other computer its mission.
Cloud Antivirus free. However, upgrades, tools and support offered for the money.

Now that we have learned that represents a cloud antivirus software, consider those functions that the typical cloud antivirus.
Functions cloud antivirus

The user interface of cloud antivirus will not cause serious problems, none of those who have used the traditional antivirus programs. And the work he does the same: it scans your computer, detects and cleans malicious code from it the system.

We list the main features available in the user interface Cloud Antivirus:

Scan your entire computer or individual folders.
Ability to customize the automatic scan mode, indicating the files that should be included in the scan.
View a detailed report on what the malicious code was detected during scanning.
Steps to remove or restore quarantined or files that have been disposed of in some way.

These basic functions Unlike traditional anti-virus is not observed. But there are some possibilities that are inherent in cloud-based anti-virus services exclusively. As we have said, cloud antivirus distributes its tasks between the user’s computer (the client program) and a remote web server (or multiple servers), which can be accessed via the Internet.

Thus, the portion of the resources is a “common” to all users. It is not only the computing power of servers, but also a central database containing information on malicious code.

This database is compiled in different ways. Each product is characterized by its methods of recruitment. For example, Panda Cloud Antivirus is receiving data from the set of sources, which the developers call “Collective Intelligence”: from the IT and software resources of the host-traps (computers, especially left as bait for viruses), as well as the users themselves.

Immunet Free Antivirus gets its data from the user community (Immunet Cloud) and in this way its developers become aware of the potential dangers. Servers that host cloud antivirus, work with algorithms, able to classify viruses according to various criteria, including the degree of danger.

Cloud databases are not only methods of gathering information. The real advantage of cloud antivirus is the speed with which they are able to provide protection against new threats.

In the Cloud Antivirus provides the ability to cache database on the computer for future use in offline mode. Of course, in this case, the database will contain data at the moment of its preservation. This cache can be updated at the time of a computer to the Internet. But it does not contain a complete list of information about malicious code, just about the most common threats.

But as long as enough of the pure theory. Let us consider the cloud antivirus software on the example of one of the most famous products of this category – Panda Cloud Antivirus.
Addressing the opportunities of cloud antivirus for example, Panda Cloud Antivirus

Облачные антивирусы

Panda Cloud Antivirus created by Panda Security. Available in two versions Free (free) and Pro (professional). Focuses on the security of operating systems Windows 7, Vista and XP (Service Pack 2 or later). After installing the client software Panda Cloud Antivirus tray logo appears with the head of the panda, which indicates that the software is loaded. A click on the panda-logo opens the user interface of the antivirus client software. Right clicking on it gives access to a number of options, including enabling and disabling the software.

The user interface displays the status screen, indicating whether there are any errors in the system or it’s all right. If at the moment you are scanning, the user sees a green stripe running “waves” in the line processes. If the scan is not performed, the user can launch it from the icon “Scan» («Scan»). This icon looks like a magnifying glass.

The user can customize some scanning options:

Optimized scanning: scanning certain by the program folders and files by Windows. Those folders and files that are most vulnerable to the existing malicious code.
Full scan: scanning of Windows entirely. In that case, if the user’s hard drive much data, it may take much time.
Custom Scan: the user chooses the folders that it would check for the presence of malicious code.

When the scan is completed, Panda Cloud Antivirus informs the user about the problems that were found on his computer. The program does not list all of these problems at once. It shows the user all “okay” or not all “okay.” If the system is wrong, the user can click the message, which indicates how many problems were found during the scan.

Or click on the icon of the report, which is similar to a pie chart. This way you can get information about the types of malicious code that were found on the computer. In this report, a link to the full “statement of events” that contains information about all that the program has done during the scanning of all detected malware files and the fact that they did antivirus.

Like other anti-virus applications, Panda Cloud Antivirus to quarantine suspicious files, some of which the program is not sure whether they are harmful or not. In Panda Cloud Antivirus quarantine is called “basket”. This means that the data files are inactivated by renaming them in such a way that it was not easy to find. Since anti-virus service gives the user the ability to recover a suspicious file.

Every cloud antivirus has as its default settings, and allows the user to change them. If you click on the appropriate icon in the lower right corner of the program, a window configuration. You can configure the following things:

Configure the connection through a proxy server. Home users that is rarely necessary, and often found in offices.
Enable or disable the automatic scanning.
Enable or disable the pre-scan USB-drives. This kind of “vaccination”, which makes it difficult to viruses able to “jump” from a flash drive to the hard drive of your computer. But this possibility is only in version Pro.
To carry out the advanced settings relating to the scanning process, the basket and the report.

Who needs antivirus?

Historically, the glory of the main object for viruses inherited the operating systems Windows. It is believed that this is due to the vulnerabilities that open cracks in the system for malicious code. Therefore, developers of antivirus software have focused on their decisions for Windows.

With this Mac and PCs running Linux, contrary to popular belief, are not completely immune to malicious code. For these platforms are also anti-virus software with which users can protect their computers.
What criticize cloud antivirus?

Облачные антивирусы

The number of available cloud-based antivirus software is growing. Some of them are worth listing:

Panda Cloud Antivirus. About him we have talked in more detail. The Pro version costs 29 dollars 99 cents U.S., and differs from its free (Free) analogue of the technical support and the ability to scan the devices connected to the computer via USB.
Immunet. This antivirus product is set up by the former leading member of Symantec and is quite powerful. Free version is a minor and is designed to gather information about virus threats. Thanks to this service is formed around a large community. Immunet Plus offer $ 24 95 cents. The paid version provides protection in offline mode, advanced scanning and removal functions.
HitMan Pro. This antivirus is free and its auxiliary task. It is designed to provide extra protection for your computer is already running anti-virus software. HitMan Pro provides a sort of second opinion on the state of the system.

Some people do not trust the Cloud Antivirus, believing that they lack a number of important components responsible for security and performance. A concern, and the fact that these services collect information from users’ computers. Panda assures people that their files never leave your computer by anti-virus service. An exception is made for certain executables. Thus, from the list passed to the “cloud” of excluded files that may potentially contain personal information. Experts recommend: Before use Cloud Antivirus, you should find out which files can become part of the database service.

Not everyone is enthusiastic and in terms of performance antivirus software that are on the user’s computer only partially. Cloud antivirus programs can increase the time it takes to load and off the computer. Furthermore, they may slow down other applications.

The slowdown of the computer may be small, but noticeable. But while traditional antivirus programs also reduce system performance. So this is not a quality feature of cloud antivirus and generally inherent product that protects your computer from malicious code.

It remains an open question as to whether cloud antivirus inferior to traditional users, or simply correct the habit? The habit is sometimes stronger than any logical arguments. For example, in the U.S. people for centuries do not want to use the metric system, despite repeatedly taken the decision to move to a system of units adopted in most countries of the world.

It also happens that the new technology for decades have not attracted much attention. But at one point, it becomes extremely popular. Such was the history of mobile communications, which is invisible to most people in the world came back in 1947 , but until relatively recently, was not popular among the masses.

According to the materials computer.howstuffworks.com
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