September total of spam comprised 89.4% of all email, down from 92.5% in August. September total was the lowest level since 2008, when rogue ISP McColo was shut down. Phishing attacks jumped by 52% in September from the month before. Most-used phishing schemes involved fake prize redemption, poker, porn or free cell phone airtime, according to Symantec. One possible explanation for the decline in spam is “the shutdown of spamit.com,” as well as string of Zeus arrests.”]
Source: https://www.darkreading.com/attacks-breaches/phishing-attacks-rise-sharply-but-spam-emails-decline