Are like pieces of a puzzle an adversary can use to reveal a picture of our operations

Indicators are like pieces of a puzzle an adversary can use to reveal a picture of our operations.

An indicator can be defined by the dictionary as something that shows what a situation is like. A thing that indicates the state or level of something. So, that according to those definitions, the suitable word that fits in that sentence in indicator. An that could provide or disclosure information pertaining to the operations.

this question is grammatically incorrect and is illegible to me so i can not answer.