Meanwhile, Network Box lowered its global alert condition to Level 2, saying it has been the lowest in nine months. This means there are limited virus/worm activities, with no major unexploited vulnerabilities or threats.

Mark Webb-Johnson, CTO of Network Box, said: "The large number of recent vulnerabilities announced by both Microsoft and Apple led to a frenzy of malware activity spearheaded by an unprecedented large number of website defacements. What we're now seeing is that those who have already patched are protected and those that haven't are already infected-- so the number of new infections appears to have levelled off."

Simon Heron, Internet security analyst for Network Box, added: "Businesses and individuals still need to be alert to threats through the remainder of the summer, particularly phishing attacks. We've seen a huge increase in SQL injection attacks so it's important that anyone using Web-based applications or servers keeps their security up-to-date."

While threat landscape currently remains stable, Network Box said it will continue to closely monitor and re-evaluate the situation as necessary, especially with Microsoft's Patch Tuesday coming next week.