Spamming is a worsening problem, according to a leading junk email filtering firm which says it has just had its busiest week yet.
California-based Brightmail said it intercepted 8000 to 13,000 mass mailings, each likely to contain thousands of individual emails, per day during the week ending 17 November. This is more than double the company's October figures.
Matthew Steele, director of operations at Brightmail, said: "We just ended our busiest week ever producing nearly 1000 unique rules each day to block this huge volume of spam from the 100-plus million boxes we protect. Just last month we were intercepting an average of 4900 attacks per day.
"Spammers are becoming more aggressive and sophisticated in their attempts... spam seriously affects the service providers by increasing the costs associated with delivering a satisfying email experience to their customers."
Experts say the majority of spam seen by UK surfers is sent from the US.
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