データ発信 はっしん もと認証 にんしょうでしょう
dētahasshimmoto ninshōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of データ発信元認証

1. Probably data source authentication.; Likely data origin verification.

Polite
Presumptive
Conjecture
Computing