Red-Teaming
Initial Access
MITRE ATT&CK™ Initial Access - Tactic TA0001
Theory
Initial Access consists of techniques that use various entry vectors to gain initial foothold within a network or target. This is how will the weaponized function be delivered to the target. Techniques used to gain a foothold include targeted spearphishing and exploiting weaknesses on public-facing web servers, and even password spraying/guessing.
The "Initial Access" Technique of MITRE ATT&CK Framework may refer to the "Delivery" step of the Unified Kill Chain.
Resources
Initial Access, Tactic TA0001 - Enterprise | MITRE ATT&CKattack.mitre.org
The Unified Kill Chainwww.unifiedkillchain.com