Architecture & deployment
보안 이메일 게이트웨이SEG
Definition
Traditional inline filter that sits in front of MX, scanning mail before delivery.
For executives (CEO·CISO)
Blocking pre-delivery is powerful but invasive, and it is blind to already-delivered internal mail and account-takeover attacks. Commonly missed: a SEG breeds false comfort while BEC and internal spread sit in its blind spot — check whether API-based (ICES) visibility complements it.