About 50% of unwanted email is now image spam up from about 2% in September last year, according to Postini, a hosted email security provider. Over the same period, the volume of spam has risen 135%, and is no 93.6% of all email, the firm said.
These two trends combined means Postini is quarantining a whopping 5.383 terabytes of data daily, up 4.4 times from the 1.328Tb it was processing in September.
