Tactic or Technique: Impersonation: Brand

Brand impersonation is a phishing technique where attackers copy the look and feel of trusted companies to make their emails seem legitimate. They recreate logos, colors, templates, and writing styles to mimic well-known brands like Microsoft, Amazon, or PayPal and convince you to trust the message.
They often use lookalike domains to make the links seem real. That could be a small typo, a character swap, or a URL like secure-microsoft[.]com that looks legitimate at first glance. These tricks are meant to get past your defenses and make you more likely to click or respond.
The goal is usually to steal your credentials or convince you to take some kind of action. But over time, these attacks also make it harder to trust what you see in your inbox. Spotting them means looking closely—at the sender address, the way the message is written, and where the links actually go. The differences are subtle, but once you know what to look for, they stand out.
Rule Name & Severity
Last Updated
Author
Types, Tactics & Capabilities
Brand impersonation: File sharing notification with template artifacts
16m ago
Jan 23rd, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-file-sharing-notification-with-template-artifacts-37d89611
Brand impersonation: Dropbox
1d ago
Jan 22nd, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-dropbox-61f11d12
Brand impersonation: AuthentiSign
2d ago
Jan 21st, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-authentisign-445a8c8b
Brand impersonation: Blockchain[.]com
2d ago
Jan 21st, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-blockchaincom-0d85e555
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
Brand impersonation: Fake Fax
2d ago
Jan 21st, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-fake-fax-2a96b90a
Brand impersonation: USPS
3d ago
Jan 20th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-usps-28b9130a
Brand impersonation: Xodo Sign
7d ago
Jan 16th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-xodo-sign-e6139052
Brand impersonation: Quickbooks
8d ago
Jan 15th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-quickbooks-4fd791d1
Spam: Commonly observed formatting of unauthorized free giveaways
9d ago
Jan 14th, 2026
Sublime Security
/feeds/core/detection-rules/spam-commonly-observed-formatting-of-unauthorized-free-giveaways-8bc49fa3
Subject: Suspicious bracketed reference
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/subject-suspicious-bracketed-reference-663dbce4
Brand impersonation: SendGrid
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-sendgrid-d800124f
Callback phishing via DocuSign comment
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/callback-phishing-via-docusign-comment-48aec918
SharePoint OTP for filename matching org name
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/sharepoint-otp-for-filename-matching-org-name-89911cbd
Deceptive Dropbox mention
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/deceptive-dropbox-mention-58a107bc
Brand Impersonation: ShareFile
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-sharefile-f8330307
Brand impersonation: United Healthcare
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-united-healthcare-f8dfff1a
Brand impersonation: Microsoft with low reputation links
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-microsoft-with-low-reputation-links-b59201b6
Brand impersonation: Sharepoint fake file share
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-sharepoint-fake-file-share-ff8b296b
Brand impersonation: Punchbowl
11d ago
Jan 12th, 2026
Sublime Security
/feeds/core/detection-rules/brand-impersonation-punchbowl-58937ba0