In its latest monthly spam report, Kaspersky Lab has said that the amount of phishing attacks on social networking site Facebook increased significantly to push it to the top five most attacked organisations list.
The computer security company said in its report that phishing attacks on Facebook increased 4.07 percentage points in June. In social networking site Habbo, it was even higher at 6.25 percentage points.
Experts at Kaspersky Lab predict a surge in spam linked to Google+.
Kaspersky Lab senior spam analyst Maria Namestnikova said, "We expect an increase in unsolicited emails exploiting the new Google social network. They will most likely contain both phishing links and malicious code."
Kaspersky says that the volume of spam in mail traffic increased slightly compared to May and averaged 83.3% and the amount of phishing emails remained unchanged and accounted for 0.02% of all mail traffic.
PayPal and eBay were the top two organisations targeted by phishers in June, followed by Habbo and Facebook.
The report said that India remained the most popular source of spam in June. Brazil returned to second place with an increase of 4.4 percentage points compared to May.
Trojan-Spy.HTML.Fraud.gen still occupies first place among the Top 10 malicious programs distributed via mail traffic.
Kaspersky found that almost a third of all English-language spam was fraudulent and was either sent with the intention of extorting money from users or contained a malicious attachment or a link to malicious code.
Pharmaceutical spam was the second most popular category, while offers of quick earnings and dubious personal loans, were among the other most prominent categories of spam in June, said the report.