avast and virii

[mantra]

how do the avast team add new virii???

they add only the start strings of a virus .. in the database?

or it's more difficult?!?

are u test every in your computer??!?

[igor]

Yes, it can be more difficult than adding a string (and definitelly not from the very start - e.g. all the exe files look mostly the same in the beginning  )  There are many polymorphic viruses having every instance different from its "parent" - so it's necessary to add a special piece of code to detect these...