The firm states in its report that the developed regions are still the most lucrative targets for hackers who have greater chances of making profit by hitting users in developed countries because every user in these countries owns a credit card or online banking or an e-pay system.

Thus, Germany holds the top position with a total of 9.23% of malware, followed by Great Britain with 8.62% of malware at second position and the USA with 8.09% at third position. Japan's share stands at a total of 7.33% and occupies the fourth position.

Notably, Spain moves four steps upward to occupy the fifth position in May 2010. The amount of malware detected by Kaspersky's mail antivirus solution in Spain doubled against April 2010 to reach the total of 7.27%.

Other countries included in the top ten lists are Taiwan (6.82%), France (4.495), India (4.26%), Italy (3.65%) and Australia (3.00%) placed at sixth, seventh, eighth, ninth and tenth positions respectively.

Further, harmful files discover in 1.69% of total mails, a rise of 0.45% compared to April 2010.

As stated by Kaspersky, social networks have become the prime focus of hackers' attention. During May 2010, the security firm registered mails which used Facebook and YouTube to circulate harmful code.

Besides malware related findings, the latest report shows that the number of links to phishing sites remains the same as compared to April's figure, accounting for 0.02% of the total mails. Facebook, eBay, HSBC and PayPal are the most famous targets for hackers, with 50.4% (-4.2%) for PayPal, 13.4% (+1.9%) for eBay, 8.5% (-1.1%) for HSBC and 6.9% (-1.8%) for Facebook. The list for the other six top 10 members is fairly stable, except for the Habbo social networking website and the IRS which were exchanged by NatWest and the Bank of America respectively.