Attack Type: BEC/Fraud

Business Email Compromise (BEC) and fraud attacks rely on deception and social engineering. Instead of using links or attachments, attackers impersonate trusted figures like coworkers, executives, or vendors to trick you into sharing sensitive information or transferring funds. These attacks can bypass traditional security tools because the emails often seem harmless.
Expect fake invoices, urgent wire transfer requests, or a vendor asking you to update payment details. The first email is usually brief—just enough to start a conversation. The attacker might spoof a display name, reply to an old thread, or ask you to continue the conversation via personal email or phone. That is often the giveaway.
Even though these attacks may appear low-effort, the impact can be significant. They can lead to wire fraud, compliance violations, and damage to the organization's reputation. Organizations lose billions to BEC attacks each year.
Rule Name & Severity
Last Updated
Author
Types, Tactics & Capabilities
Service abuse: Adobe legitimate domain with document approval language
15h ago
Jan 23rd, 2026
Sublime Security
/feeds/core/detection-rules/service-abuse-adobe-legitimate-domain-with-document-approval-language-237f4da4
BEC/Fraud: Romance scam
23h ago
Jan 22nd, 2026
Sublime Security
/feeds/core/detection-rules/becfraud-romance-scam-0243cdaa
Brand impersonation: AuthentiSign
2d ago
Jan 21st, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-authentisign-445a8c8b
Attachment: Invoice and W-9 PDFs with suspicious creators
2d ago
Jan 21st, 2026
Sublime Security
/feeds/core/detection-rules/attachment-invoice-and-w-9-pdfs-with-suspicious-creators-305d6e32
Link: Self-sent message with quarterly document review request
2d ago
Jan 21st, 2026
Sublime Security
/feeds/core/detection-rules/link-self-sent-message-with-quarterly-document-review-request-3c42cec6
Job scam with specific salary pattern
2d ago
Jan 21st, 2026
Sublime Security
/feeds/core/detection-rules/job-scam-with-specific-salary-pattern-af7f9e21
Link: Breely link masquerading as PDF
7d ago
Jan 16th, 2026
Sublime Security
/feeds/core/detection-rules/link-breely-link-masquerading-as-pdf-4a498c21
BEC: Employee impersonation with subject manipulation
7d ago
Jan 16th, 2026
Sublime Security
/feeds/core/detection-rules/bec-employee-impersonation-with-subject-manipulation-9adfc77b
Request for Quote or Purchase (RFQ|RFP) with suspicious sender or recipient pattern
8d ago
Jan 15th, 2026
Sublime Security
/feeds/core/detection-rules/request-for-quote-or-purchase-rfqorrfp-with-suspicious-sender-or-recipient-pattern-2ac0d329
Brand impersonation: SendGrid
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-sendgrid-d800124f
Vendor impersonation: Thread hijacking with typosquat domain
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/vendor-impersonation-thread-hijacking-with-typosquat-domain-9c2f38ed
Callback phishing via Zelle Service Abuse
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-zelle-service-abuse-08727484
Russia return-path TLD (untrusted sender)
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/russia-return-path-tld-untrusted-sender-588b3954
Business Email Compromise (BEC) with request for mobile number
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/business-email-compromise-bec-with-request-for-mobile-number-514ffd68
VIP impersonation: Fake thread with display name match, email mismatch
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/vip-impersonation-fake-thread-with-display-name-match-email-mismatch-11cc3e28
Business Email Compromise (BEC) attempt from untrusted sender
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/business-email-compromise-bec-attempt-from-untrusted-sender-96d4c35a
Service abuse: DocSend share from newly registered domain
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/service-abuse-docsend-share-from-newly-registered-domain-3bc152f2
Service abuse: Dropbox share with suspicious sender or document name
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/service-abuse-dropbox-share-with-suspicious-sender-or-document-name-27007c9f
Service Abuse: HelloSign share with suspicious sender or document name
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/service-abuse-hellosign-share-with-suspicious-sender-or-document-name-464d98f3
Brand impersonation: QuickBooks notification from Intuit themed company name
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-quickbooks-notification-from-intuit-themed-company-name-42058fc4