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Thursday, January 19, 2006
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Then and Now: Brain.A vs Bagle.AG Posted by Gergo @ 16:28 GMT

Time flies, it seems. The first PC virus was found exactly two decades ago. F-Secure's press release has a rundown on how viruses have changed over the years. It is probably not a surprise that viruses have also gotten more complex in the process.

The following is a structural comparison of Boot/Brain.A (1986) and W32/Bagle.AG@mm (2004):

Boot/Brain.A

W32/Bagle.AG@mm

Can anyone spot the five small differences between these two pictures?

Brain.A fits into a few sectors and consists of around a dozen functions. Bagle.AG weighs over 100 KiB unpacked and it is built from more than a hundred functions. For people interested in history, we still have a description of Brain.A.

brain floppy






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