Detection Method: Sender analysis

Sender analysis helps you assess whether an email is coming from a legitimate sender. By combining machine learning and rules-based logic, this method evaluates sender profiles, looking at things like authentication results, past behavior, and patterns from previous messages.
Sender analysis can help you detect:
  • Impersonation attempts using fake email addresses or domains
  • Suspicious senders with authentication issues (e.g., SPF, DKIM, DMARC failures)
  • Unusual behavior based on historical patterns, like frequent urgent requests
  • Senders linked to known phishing or malware campaigns
  • Changes in sender behavior that could indicate a compromised account
For example, an attacker might try to impersonate a trusted vendor or executive. The email address or domain might look real, but sender analysis can catch issues like failed authentication checks or past suspicious activity, helping you spot these threats before they do damage.
Blog Posts
Credential phishing Charles Schwab account holders with 2FA bypass · Blog · Sublime Security
Credential phishing Charles Schwab account holders with 2FA bypass · Blog · Sublime Security
Hiding a $50,000 BEC financial fraud in a fake email thread · Blog · Sublime Security
Hiding a $50,000 BEC financial fraud in a fake email thread · Blog · Sublime Security
Callback phishing via invoice abuse and distribution list relays · Blog · Sublime Security
Callback phishing via invoice abuse and distribution list relays · Blog · Sublime Security
B2B freight-forwarding scams on the rise to evade financial fraud crackdowns · Blog · Sublime Security
B2B freight-forwarding scams on the rise to evade financial fraud crackdowns · Blog · Sublime Security
Detecting malicious AnonymousFox email messages sent from compromised sites · Blog · Sublime Security
Detecting malicious AnonymousFox email messages sent from compromised sites · Blog · Sublime Security
Talking phish over turkey · Blog · Sublime Security
Talking phish over turkey · Blog · Sublime Security
Hidden credential phishing within EML attachments · Blog · Sublime Security
Hidden credential phishing within EML attachments · Blog · Sublime Security
Living Off the Land: Credential Phishing via Docusign abuse · Blog · Sublime Security
Living Off the Land: Credential Phishing via Docusign abuse · Blog · Sublime Security
Living Off the Land: Callback Phishing via Docusign comment · Blog · Sublime Security
Living Off the Land: Callback Phishing via Docusign comment · Blog · Sublime Security
Adversarial ML: Extortion via LLM Manipulation Tactics · Blog · Sublime Security
Adversarial ML: Extortion via LLM Manipulation Tactics · Blog · Sublime Security
Attack Types (8):
Credential Phishing
BEC/Fraud
ICS Phishing
Callback Phishing
Spam
Malware/Ransomware
Extortion
Reconnaissance
Tactics & Techniques (25):
Impersonation: Brand
Social engineering
Image as content
Spoofing
Open redirect
Evasion
Free file host
Out of band pivot
Scripting
PDF
Lookalike domain
Impersonation: VIP
Impersonation: Email address
Impersonation: Domain
Impersonation: Employee
Free email provider
Free subdomain host
ICS Phishing
QR code
HTML smuggling
Encryption
Macros
Exploit
OneNote
IPFS
Rule Name & Severity
Last Updated
Author
Types, Tactics & Capabilities
Impersonation: SAM/SBA federal registration
20m ago
Aug 27th, 2026
Sublime Security
Credential Phishing
BEC/Fraud
Impersonation: Brand
Social engineering
Image as content
Sender analysis
Content analysis
HTML analysis
Header analysis
Brand impersonation: Robinhood
20m ago
Aug 27th, 2026
Sublime Security
Credential Phishing
Impersonation: Brand
Social engineering
Content analysis
Header analysis
Sender analysis
URL analysis
Attachment: ICS invite meeting lure
1h ago
Aug 27th, 2026
Sublime Security
ICS Phishing
Credential Phishing
Social engineering
Impersonation: Brand
Spoofing
Open redirect
Content analysis
URL analysis
Header analysis
Sender analysis
File analysis
Brand impersonation: McAfee
2h ago
Aug 27th, 2026
Sublime Security
Credential Phishing
BEC/Fraud
Callback Phishing
Impersonation: Brand
Social engineering
Content analysis
Header analysis
Natural Language Understanding
Sender analysis
Link: Microsoft protected message with suspicious recipient patterns
2h ago
Aug 27th, 2026
Sublime Security
Credential Phishing
Evasion
Social engineering
Content analysis
File analysis
Header analysis
Sender analysis
URL analysis
Service abuse: Kagoya.net-hosted domains sending English business lures
2h ago
Aug 27th, 2026
Sublime Security
BEC/Fraud
Spam
Impersonation: Brand
Social engineering
Spoofing
Natural Language Understanding
Header analysis
Sender analysis
Brand impersonation: Microsoft with low reputation links
4h ago
Aug 27th, 2026
Sublime Security
Credential Phishing
Free file host
Image as content
Impersonation: Brand
Social engineering
Computer Vision
Content analysis
File analysis
Header analysis
Natural Language Understanding
Optical Character Recognition
Sender analysis
URL analysis
BEC/Fraud: Self-addressed reply with unrelated link in ongoing thread
1d ago
Aug 26th, 2026
Sublime Security
BEC/Fraud
Credential Phishing
Social engineering
Out of band pivot
URL analysis
Header analysis
Sender analysis
Content analysis
ClickFix: Clipboard hijack lure with copy-paste-to-terminal instruction
1d ago
Aug 26th, 2026
Sublime Security
Malware/Ransomware
Credential Phishing
Evasion
Social engineering
Scripting
Content analysis
Natural Language Understanding
Sender analysis
URL analysis
Link: Self-sender with sender org in subject and credential theft indicator
2d ago
Aug 25th, 2026
Sublime Security
Credential Phishing
Social engineering
Evasion
Natural Language Understanding
Content analysis
Sender analysis
URL analysis
Header analysis
Link: Fake RFP/bid reference number lure
2d ago
Aug 25th, 2026
Sublime Security
Credential Phishing
BEC/Fraud
Spam
Social engineering
Impersonation: Brand
Spoofing
Content analysis
URL analysis
Header analysis
Sender analysis
Business Email Compromise (BEC) with request for mobile number
2d ago
Aug 25th, 2026
Sublime Security
BEC/Fraud
Social engineering
Content analysis
Natural Language Understanding
Sender analysis
Business Email Compromise: Request for mobile number via reply thread hijacking
2d ago
Aug 25th, 2026
Sublime Security
BEC/Fraud
Social engineering
Content analysis
Natural Language Understanding
Sender analysis
Attachment: Risk assessment PDF with inline image
2d ago
Aug 25th, 2026
Sublime Security
Malware/Ransomware
Spam
Image as content
PDF
Social engineering
File analysis
HTML analysis
Header analysis
Sender analysis
Brand impersonation: Automobile assistance associations
2d ago
Aug 25th, 2026
Sublime Security
Credential Phishing
Impersonation: Brand
Social engineering
Content analysis
Natural Language Understanding
Header analysis
Sender analysis
Brand impersonation: Sedgwick Claims
2d ago
Aug 25th, 2026
Sublime Security
BEC/Fraud
Credential Phishing
Impersonation: Brand
Spoofing
Social engineering
Natural Language Understanding
Sender analysis
Header analysis
Service abuse: Facebook mail notification callback scam
2d ago
Aug 25th, 2026
Sublime Security
Callback Phishing
Impersonation: Brand
Social engineering
Spoofing
Sender analysis
Natural Language Understanding
Brand impersonation: UPS
2d ago
Aug 25th, 2026
Sublime Security
Credential Phishing
Impersonation: Brand
Lookalike domain
Social engineering
Computer Vision
Sender analysis
Brand impersonation: AARP
2d ago
Aug 25th, 2026
Sublime Security
BEC/Fraud
Credential Phishing
Impersonation: Brand
Social engineering
Content analysis
Header analysis
Sender analysis
Brand impersonation: United States Patent and Trademark Office
2d ago
Aug 25th, 2026
Sublime Security
BEC/Fraud
Impersonation: Brand
Social engineering
Content analysis
Header analysis
Natural Language Understanding
Sender analysis
URL analysis
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