When the "Swen" virus infected someone's system, it made significant changes to the registry that caused it to be extremely difficult to be removed. What were all the registry changes and why did those changes make it so difficult to remove?
The Microsoft Windows® Registry is a very powerful and logically designed computer database that controls virtually every facet of your computer's operation and is found on all Microsoft Windows® installations.
While the computer's microprocessor [ is the brain of the hardware, the Registry is the brain of the Operating System. Most people are unfamiliar with the Registry and with good reason.
A deleted or corrupted Registry entry could render an application or even the entire operating system completely unusable.
However, with the advent of spam, poorly written software rushed to production, and any number of spyware agents available to corrupt one's computer, not knowing what the Registry does or how to navigate its basic structure could compromise your computer as easily as any piece of malware waiting to infiltrate its every file.
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