Quarterly highlights
Worming their way in: cybercriminal tricks of the trade
These days, many companies distribute marketing newsletters via online platforms. In terms of capabilities, such platforms are quite diverse: they send out advertising and informational messages, harvest statistics (for example, about clicked links in emails), and the like. At the same time, such services attract both spammers, who use them to send their own mailings, and cybercriminals, who try to gain access to user accounts, usually through phishing. As a result, attackers also get their hands on user-created mailing lists, which allows them to disseminate mass advertising or phishing messages that filtering systems sometimes let through.
Accordingly, in Q3 we registered an increase in the number of messages sent using the Sendgrid platform. A significant portion of them were phishing attacks aimed at stealing login credentials for major resources. The emails were no different from traditional phishing, save for the legitimate headers and link to Sendgrid, which redirected the recipient to a phishing site. To the observant eye, the address bar and From field would reveal the messages to be fake.
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In our previous quarterly report, we talked about an increasingly common scam whereby fraudsters send emails purportedly from large companies with a request to urgently contact support at the given phone number. Users who contacted the operator were then asked for information, such as bank card details, which could then be used to empty their account. ..
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