the more aggressive virus

my virus experience
i got a klez & opas
the klez discarded my kaspersky ,and started to delete files

for u , the more aggressive virus???
maybe an advise from alwil team… >:(

That depends on the version of Klez and opasoft…

some Opasofts (K,L ?) maybe overwrite Bootsector or even CMOS, leaving the PC unable to boot. They are itw, but not really that widespread :wink:

no it deleted a lot of files

Which of these Viruses (Variants) delete files?