Last September, spam traffic fluctuated at the level of 70-80% of the total mail traffic, Kaspersky Lab
summarizes . In the "spikes" spamming activity, and they happened 4 times on weekends, the 80% threshold was exceeded every time.
Analyzing the filtered letters, the employees of the “Laboratory” noted that the thematic focus of spam has changed. Sharply increased its share of trash category "Personal Finance", displacing spam from "Computer Fraud". Now the top three include topics related to medicines (18.6 percent prevalence of the topic), educational services (14.9%) and personal finances (13.9%).
It is clarified that these
personal finances imply offers for insurance, reduction of credit debt, favorable terms of loans, etc. Most of the letters are English-language, that is, they are focused on the user of the western Internet segment. “Spam is becoming more and more criminal,” say the researchers, explaining that the third most popular thematic branch is to become part of the “Computer Fraud” section.
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The sharp rise in personal finance spam began in August 2006. Its bulk consisted of mailings with calls to invest in investments. The slogan "Everything is on the stock exchange!" - can be done the slogan of the month, summarizes the "Laboratory".
Among the popular spamming techniques are still sending out files in the format of an animated GIF file. However, a huge influx of graphical spam causes retaliation from users and system administrators - they simply stop receiving messages containing graphical attachments. Or they use programs that take the graphic part out of the message.
“Of course, such a measure is unacceptable for a public mail service,” say the report’s authors, “but within the framework of a small corporate mail server, it is quite possible, especially if the company does not need to send graphic attachments by occupation”.