[ggm]

Worked in an ISP whose bulk ordered install media for dialup config was preinfected either at the diskette factory or the bulk copyist. We'd shipped to customers before it was detected.

A lot of virus came from people in supply chain basically. Even extra goodies installed in the handy local pc shop, "he said it made my pc faster" still happens.

A lot of viruses were glued to the front of magazines