TA0001 · INITIAL ACCESS
Phishing
Attachments, links, or service-based delivery aimed at getting execution or credentials from a user.
Detect it with
Mail gateway detonation verdicts, user-reported phish queue, first-time-seen sender plus attachment execution on the endpoint.
Why it matters on shift
Phishing is one of the concrete ways adversaries achieve initial access. Recognising it in telemetry lets you name the technique in your ticket and pivot to what came before and after.
What to look for next
After initial access, the next tactic is usually Execution. Search your telemetry for the transition before closing the ticket.
4 sub-techniques
How it shows up in practice
- T1566.001
Spearphishing Attachment
Adversaries may send spearphishing emails with a malicious attachment in an attempt to gain access to victim systems. Spearphishing attachment is a specific variant of spearphishing.
- T1566.002
Spearphishing Link
Adversaries may send spearphishing emails with a malicious link in an attempt to gain access to victim systems. Spearphishing with a link is a specific variant of spearphishing.
- T1566.003
Spearphishing via Service
Adversaries may send spearphishing messages via third-party services in an attempt to gain access to victim systems. Spearphishing via service is a specific variant of spearphishing.
- T1566.004
Spearphishing Voice
Adversaries may use voice communications to ultimately gain access to victim systems. Spearphishing voice is a specific variant of spearphishing.
Kill-chain context