Unfortunately, also Macs can receive this kind of viruses via attached files.
I have personally experinced this, until my provider has started a system
of disinfection in all the boxes...
At present I receive from 4 to 10 warnings with virus alert directly from
the provider every day...
Maria
Maria Antonietta Fontana Angioy
Evolver srl - La Conchiglia
Rome, Italy