In July 2017, global spam rate reached the highest level registered since March 2015, fueled by the emergence of malware families attempting to self-spread via email, according to Symantec.
The global spam rate last month was 54.9%, registering a 0.6 percentage point increase compared to the previous month. Driving the rate upwards was, among other factors, the appearance of malware variants that could spread via spam emails.
The surge was also mirrored in an increase in email malware rate, which reached one in 359 emails in July, up from one in 451 during the previous month.
