Calgary Virus Removal
okComputer’s Calgary Virus Removal service will clean your PC or Laptop from any virus infection that has gotten onto your machine. A PC virus infection can debilitate your machine and leave it unusable.
We will heal your Computer without losing your important data files, pictures, music etc.
If your machine has become unbootable due to a virus infection we can put the machines hard drive in an external reader and rescue your files onto a backup drive or DVD.
We have successfully removed virus infections in hundreds of computers in Calgary.
Computer virus ‘es are constantly evolving and emerging from casual hackers who create them for their own amusement and challenge through to criminal gangs who want to steal sensitive information for their own gain.
If you feel you have a virus infection it is important to have it dealt with as otherwise you may be sharing everthing you do online with the author of the virus.
Here is my list (part 1) of the typical types of machine infection
1. Boot Sector Virus
These are loaded into the Machines RAM upon startup (or bootup). Originally spread through the use of floppy discs. They can now occur in the MBR or Master Boot Record and will spread to any non write protected drive attached to the PC such as USB sticks and external storage drives.
They are considered an older type of infection today.
2. Browser Hijacker
If you ever find your web browser jumping to a page that you didnt requestthen you most probably have a hijacker on your system. Commonly your home page will be altered and new favourites will be added that point to sites of dubious content. Often, the hijacker will make changers to the registry of your system, so even if you manually fix the homepage back to your choice it will revert to the hijack page.
The usual route to infection is often by inadvertently allowing the infection to install itself, usually via a popup that requests permission whenever you are on a particular site
There are a lot of such viruses, and often will have “search” included somewhere in their description.
CoolWebSearch is a widely seen variant of this infection, but others are equally as common.
3. Direct Action Virus
The main purpose of this virus is to replicate and only comes into action when the file containing the virus is executed. The payload is delivered and then the virus becomes dormant unless an infected file is executed again.
When it goes into action it will infect files in the directory or folder that it is in and in directories that are specified by the AUTOEXEC.BAT file PATH. This batch file is always located in the root directory of the
hard disk and carries out certain operations when the computer is booted.
Not a particularly common computer infection any longer. The Vienna virus, which came to prominence in the late 80′s, is its most well known example.
4. File Infector Virus
This is the virus type that is seen most often today. It infects programs and executable files (.EXE or .COM extension). When these programs run, either directly or indirectly, the virus becomes activated, causing the damaging effects it was designed to do.
The virus may completely destroy the file it infects by overwriting all or part of it or it may also leave the file intact but spread the infection whenever the file is opened or executed.
5. Macro Virus
Programs such as Microsofts Excel provide support for Macros – these are special actions programmed into a document using a specific macro programming language to enhance the functionality of the document. Macros are mini-programs that automate a series of operations into one single action, saving the user from having to carry them out one by one. This makes it possible for a virus writer to hide malicious code inside a seemingly benign document.
Well known macro viruses: Melissa.A, Relax, Bablas and O97M/Y2K.
Macro viruses vary widely in terms of payload. The Melissa Macro, is a Word document which purported to contain passwords for pornographic websites. The virus exploited Word’s link to Microsoft Outlook in order to email copies of itself to everyone stored in the users address book.
