Tactic or Technique: Out of band pivot

Attackers use out-of-band pivoting to move conversations off email and onto channels with less security oversight. They start with a simple message and then try to shift the conversation to phone, text, WhatsApp, or personal email, where monitoring and protections are weaker or nonexistent.
A message may reference an urgent issue and include a phone number, QR code, or request to continue the conversation elsewhere. Once the communication moves off email, attackers can push the scam further without being seen by security tools.
This tactic works because it breaks the visibility chain. Email security may catch a bad link or attachment, but it can’t detect what happens in a phone call or private chat. That gap gives attackers more freedom to ask for credentials, convince you to take risky actions, or escalate the attack without triggering alerts.
Rule Name & Severity
Last Updated
Author
Types, Tactics & Capabilities
Callback phishing via Microsoft comment
17d ago
Dec 16th, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-microsoft-comment-8346c7b9
Service abuse: Callback phishing via Microsoft Teams invite
21d ago
Dec 12th, 2025
Sublime Security
/feeds/core/detection-rules/service-abuse-callback-phishing-via-microsoft-teams-invite-13e35e5f
Callback phishing via Google Meet
30d ago
Dec 3rd, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-google-meet-70e01845
Attachment: Credit card application with WhatsApp contact
1mo ago
Nov 20th, 2025
Sublime Security
/feeds/core/detection-rules/attachment-credit-card-application-with-whatsapp-contact-95b08315
BEC/Fraud: Job scam fake thread or plaintext pivot to freemail
1mo ago
Nov 20th, 2025
Sublime Security
/feeds/core/detection-rules/becfraud-job-scam-fake-thread-or-plaintext-pivot-to-freemail-ce21c151
Callback phishing in body or attachment (untrusted sender)
1mo ago
Nov 19th, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-in-body-or-attachment-untrusted-sender-b93c6f94
Callback phishing solicitation in message body
2mo ago
Oct 17th, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-solicitation-in-message-body-10a3a446
Callback phishing: Branded invoice from sender/reply-to domain less than 30 days old
2mo ago
Oct 17th, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-branded-invoice-from-senderreply-to-domain-less-than-30-days-old-e6f4af53
Callback phishing via Adobe Sign comment
2mo ago
Oct 17th, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-adobe-sign-comment-7eb4516d
Callback phishing via SignFree e-signature request
2mo ago
Oct 17th, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-signfree-e-signature-request-21381c37
Callback phishing via Xodo Sign comment
2mo ago
Oct 17th, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-xodo-sign-comment-6f722c5d
Service abuse: Google classroom solicitation
2mo ago
Oct 17th, 2025
Sublime Security
/feeds/core/detection-rules/service-abuse-google-classroom-solicitation-e9c39e92
Callback Phishing via Signable E-Signature Request
2mo ago
Oct 17th, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-signable-e-signature-request-4599575d
Attachment: Callback phishing solicitation via image file
3mo ago
Sep 25th, 2025
@vector_sec
/feeds/core/detection-rules/attachment-callback-phishing-solicitation-via-image-file-60acbb36
Callback Phishing via Zoom comment
3mo ago
Sep 22nd, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-zoom-comment-8ec30881
Credential Phishing via Dropbox comment abuse
3mo ago
Sep 22nd, 2025
Sublime Security
/feeds/core/detection-rules/credential-phishing-via-dropbox-comment-abuse-744d494d
Attachment: Callback phishing solicitation via text-based file
3mo ago
Sep 22nd, 2025
Sublime Security
/feeds/core/detection-rules/attachment-callback-phishing-solicitation-via-text-based-file-ca39c83a
Callback phishing via DocuSign comment
3mo ago
Sep 22nd, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-docusign-comment-48aec918
BEC/Fraud: Student loan callback phishing
3mo ago
Sep 5th, 2025
Sublime Security
/feeds/core/detection-rules/becfraud-student-loan-callback-phishing-a71f82c3
Callback phishing via Yammer comment
4mo ago
Sep 2nd, 2025
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-yammer-comment-66650e2b