Tag Archives: file
The 5 Most Common Types of Viruses
Computer viruses are those malicious programs that once they infect your computer, they will start causing mass destruction to your PC. Similar to biological viruses, they can multiply in various ways and develop from one type to another. Since there are hundreds of viruses out there, here are the five basic types of viruses that people are most likely to encounter, in order to make the identifying process easier.
Trojan Virus
Worms
Macro Virus
Boot Sector Virus
File Infector Virus
Trojan Virus – This virus appears to be nothing more than an interesting computer program or file of a user who’s interested in collecting audio files. Once this virus enters your computer, it doesn’t reproduce, but instead makes your computer vulnerable to malicious intruders by allowing them to access and read your files. A Trojan horse must be sent by someone or carried by a program or software of some sort. The malicious functionality of a Trojan horse may be anything undesirable for a computer user, including data destruction or compromising a system by providing a means for another computer to gain access, thus bypassing normal access controls.
Worm A Worm is a virus program that copies and multiplies itself by using computer networks and security flaws. Worms are more complex than Trojan viruses, I should say, and usually attacks multi-user systems. It can spread over corporate networks via the circulation of emails. Once multiplied, the copied worms scan the network for further escape and will then cause errors on the network.
Macro Virus – This type of virus usually comes as part of a document or spreadsheet, more often found in an email. Many of the current macro viruses are written in this language and attached to Word documents. This capability is powerful, but allows viruses to be written and executed much more easily than by using other methods.
Boot Sector Virus – A virus which attaches itself to the first part of the hard disk that is read by the computer upon start up, which are normally spread by floppy disks. In time, they can spread to other readable disks. Booting problems and start up problems, problems with retrieving data, computer performance instability and the inability to locate hard drives are all issues that may arise due to a boot sector virus infection.
File Infector Virus As the name indicates, this type of virus was designed to avoid detection by antivirus software by changing itself internally. Upon running a program that has been corrupted by a file infector, the virus copies the malicious code and applies it to other executable applications on the computer. Files that are the most vulnerable to this type of infection have the extensions of EXE. and .COM, though any file is capable of execution can be infected.
How to fight some of these viruses is still completely a puzzle for anti-virus makers. However, knowing a little about your enemies could be an advantage to get vital information on how to defend your computer from those threats. Read on Virus Removal Help – How to Remove Viruses Easily From Your PC? in order to become more familiar with the steps on how to remove the common types of viruses from your computer.
CSV Converter Converts CSV to Other File Types with Outstanding Accuracy
We often need to move data from one format to the other. Take CSV for example. too often we need to export CSV to other file types to load that file to an application that does not support CSV, or it is just convenient for editing. But what’s a user to do? Until recently,we had to buy several specialized software packages to export to other formats, which was expensive. Also you could re-enter all data from a CSV database to a file in a new format but that would be too hard and require too many efforts. Hopefully, all of that is eliminated.
CSV Converter lets the user convert CSV to nine popular formats, such as DBF (Dbase III/IV, Visual Foxpro) , Excel (XLS,XLSX), TXT, HTML, PRG, XML, SQL, and RTF. To export a file, you just need to choose the source database, the target format and output directory. If there is anything in a CSV database that you do not want to be exported, the program allows you to set a filter by example and choose columns to exclude from the conversion, which gives flexibility in defining output database parameters. Once everything is set and configured, the next step is to start the process, which is only one click. The program intelligently parses the source database, converts all data to a li
st of data fields and saves the output to the output folder. All of this happens without requiring your attention. Also no external drivers such as ODBC or BDE are required. Claimed accuracy is around 100 %.
Advanced CSV Converter requires no learning after the installation. The user can begin your first CSV conversion right after the installation thanks to the wizard-driven interface that guides you through all the stages of the setup process in a step-by-step manner. In addition to exporting a single file, the user can also run a batch conversion of more than one file in one go. For this purpose, the user should select the folder with CSV files as the source, configure export parameters and start the conversion. Also although most people prefer to use the GUI user interface, some advanced users may prefer to do conversion from the command line, and the program provides support for this function too.
Once you try, you’re going to see that Advanced CSV Converter provides an easy and inexpensive solution to converting your data from CSV to other formats. The program runs on all versions of Windows, including Vista and Windows 7 (32/64-bit).
How to Avoid Getting a Computer Virus
Is your system running slow? Are you experiencing pops up or a blank screen with no icons and taskbar? More than likely, your system has become infected with malicious software-it can be worm, virus, trojan horse, redirectors and some form of malware. These are the common indications that your system may have been infected with these so called malware. It is an unfortunate situation to be caught in if your system locks up and you can’t do anything at all, especially If you have a bunch of important files saved to your computer. If this is the case, you might need to consider having a professional virus and spyware removal service provide immediate assistance.
There are many ways our systems can become infected. The most common culprit would be the Internet. Sometimes, the virus can disguise itself under a different website so people will think it’s the usual website that you visit and end up having infections. It can also be transferred through mail attachments or through a USB thumb drive that has infected files. What these infections do are they disable or hijack your antivirus program and do it’s subtle attacks-they tamper some settings on the registry, set restrictions and policies on our systems hence we can’t access some files and some functions/features are not working. Furthermore, these can also cause series of blue screens or loop as we log in.
The most common file extensions that viruses attack are .exe, .sys, .dll and other file extensions on Windows library… It may also delete some important Windows component that may result in your computer being unable to start up. One important file is the userinit.exe file under system32 folder, when this file is deleted it will not load the settings for a certain user and will just log off.
People think that systems are not prone to have infections once there is an antivirus program installed. This is a common misconception where in fact, there is no perfect antivirus program that can give a hundred percent protection but it still depends on what users do and how it’s being used. One way to prevent having a virus infect your computer is to limit the amount of visits to unsecured websites. Nevertheless, as users we still have the power over this to protect our systems and prevent this from happening.- we can update our antivirus online regularly, clear cache/cookies or run some cleaning tools for this. Do a scan on USB flash drives and mail attachments before we open it. Most of all, we should be careful and vigilant on things that we browse online.