Interesting study. It seems that spam content received is constant across all industries and the majority of it is pharmaceutical related. This could mean one of two things: either very few spammers are responsible (likely); or, a lot of men fall for the v-i-AGR*A spam. Anyway, check it out:
Panda Security has just completed a 3-month long study of spam across 11 different industries, exposing that automotive industry is most heavily targeted. The study found that 99.89 percent of all e-mail received by the automotive industry is spam, with just .11 percent being legitimate messages. The automotive industry was closely followed by the electronics industry and governmental sector as the top spam targets.
When analyzing the survey, Panda found it particularly interesting that while industries are targeted in different ratios, the content of the spam they receive (the majority of which is pharmaceutical related) is constant across all industries.
View the full press release online here: http://www.pandasecurity.com/usa/homeusers/media/press-releases/viewnews?noticia=9906
Panda has posted a breakdown of how each industry is affected to its Flickr page: http://www.flickr.com/photos/panda_security/4026424134/