Worm activity fell last month by over 80 per cent, according to research released today.
A study by managed email provider Frontbridge Technologies found that 319 million of the emails it handled in May were infected with some kind of internet worm, but that the figure dropped to 36 million in June.
"Despite a lull in activity last month, we still warn companies that the danger of viruses remains ever present," said Charles McColgan, chief technology officer at Frontbridge.
"We continue to see new virus strains transmitted across our network on a daily basis."
One particularly nasty variant, Fantibag Trojan, blocks access to a range of security websites.
Cotton seedling freezes to death as Chang'e-4 shuts down for the Moon's 14-day lunar night
Fortnite easily out-earns PUBG, Assassin's Creed Odyssey and Red Dead Redemption 2 in 2018
Meteor showers as a service will be visible for about 100 kilometres in all directions
Saturn's rings only formed in the past 100 million years, suggests analysis of Cassini space probe data
New findings contradict conventional belief that Saturn's rings were formed along with the planet about 4.5 billion years ago