And five per cent of traffic contains malware
A fifth of all messages received by corporate email servers are spam, according to research by an antivirus company.
Panda Software said that its GateDefender Performa website had identified 21 per cent of emails as spam messages.
Perhaps more worrying, Panda found that one in 20 emails were infected with malware.
Statistics based on staff browsing also found that almost 40 per cent of internet use in companies is non-work related.
Read more: vnunet.com
