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??!?
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…