Manor Independent School District (MISD) in Texas is investigating an email phishing attack after a series of seemingly normal school-vendor transactions resulted in the loss of an estimated US$2.3 million. According to the statement posted on Twitter, the district is cooperating with the Manor Police Department and the Federal Bureau of Investigation (FBI), and encouraged the community to share any information related to the incident.
According to local reports, the attack was done across three separate transactions, with the cybercriminals contacting multiple individuals in the district from November to December. Failing to recognize that the bank information was changed, one email recipient responded and followed through with the transactions before recognizing that it was a fraudulent bank account.
Schools and local government institutions have become a target of cybercriminals for business email compromise (BEC), with losses amounting to millions after failing to recognize discrepancies in suppliers’ and contractors’ email exchanges. As Trend Micro included in their 2020 Predictions, cybercriminals are expected to maximize profit via BEC and phishing by combining old techniques with new technologies. Here are some best practices that can be followed to avoid or defend against these kinds of attacks:
Look for suspicious elements in emails and discrepancies from their usual forms of communication. Examples of these include invoices or email inquiries arriving without any context, messages that require urgent action, misspelled words in the subject line, or grammatical errors in the email content.
Examine embedded URLs in emails before clicking. Hovering the pointer above the link or checking the URL may show a different target address.
Fund transfers, requests and transactions should always be verified via other channels and with other teams or personnel. Contact the supplier or contractor via a phone call using previously used and verified contact information, or procedures can include having redundant sign-offs with higher officers.
Organizations can adopt advanced technologies to defend against phishing attacks. For example, the Trend Micro™ Cloud App Security, uses artificial intelligence (AI) and computer vision technology to help detect and block phishing attacks that use brand impersonation by checking if a legitimate login page’s branded elements, login form, and other website components are being spoofed. It also uses Writing Style DNA, a security technology designed to fight against BEC scams. It can help detect email impersonation tactics used in BEC and similar scams. It uses artificial intelligence (AI) to recognize the DNA of a user’s writing style based on past emails and then compares it to suspected forgeries. The technology verifies the legitimacy of the email content’s writing style through a machine learning model that contains the legitimate email sender’s writing characteristics.
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