This is the 8745th most frequent Korean word.
간접으로
"Indirectly."
간접으로 is used here to describe how the information was obtained, indirectly rather than directly.
이 정보를 간접으로 얻었어요.
I obtained this information indirectly.
간접으로 here modifies the manner in which he received the help, through indirect means.
그는 간접으로 그녀의 도움을 받았습니다.
He indirectly received her help.
간접으로 describes the manner of mentioning, implying that it was not straightforward.