Email Security Glossary
Define and master 122 critical concepts in email security, threat protection, and zero-trust verification.
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M
- MAC Spoofing
- Macro Virus
- Macro-Enabled Document
- Mail Forwarding Rules
- Malicious Attachment
- Malware
- Man-in-the-Middle (MitM) Attack
- MDA (Mail Delivery Agent)
- Message-ID
- MIME (Multipurpose Internet Mail Extensions)
- MSA (Mail Submission Agent)
- MTA (Mail Transfer Agent)
- MUA (Mail User Agent)
- Multi-Factor Authentication (MFA)
- MX Record
N
O
P
Q
R
S
- S/MIME (Secure/Multipurpose Internet Mail Extensions)
- Sandboxing
- Secure Email Gateway (SEG)
- Security Awareness Training
- Sender Policy Framework (SPF)
- Sender Reputation
- SIEM
- Single Sign-On (SSO)
- Smishing
- SMTP (Simple Mail Transfer Protocol)
- SOAR
- Social Engineering
- Spam
- Spear Phishing
- SPF Hard Fail
- SPF Soft Fail
- Spoofing
- Spyware
- SSL (Secure Sockets Layer)
- STARTTLS