"The File hasn't been changed" - does this mean, we haven't changed it!

[Sureshvemuri]

1. "The File hasn't been changed"- When we say this, does this clearly tell our client that, WE haven't changed it!

"The File has been uploaded"- When we say this, can the other person understand that , WE (some of our co-workers) have uploaded the File.
Would it be clear that ONE OF OUR EMPLOYEES has changed/hasn't changed the file.
Is this the correct SENTENCE to tell others that WE HAVE DONE it (here we are not mentioning that WE have done it).

2. If my Boss had asked me, "what did you do today"
and if my reply had been "File KKK has been uploaded", is the meaning "FILE KKK HAS BEEN UPLOADED."
Here, "FILE KKK HAS BEEN UPLOADED" = I have uploaded File KKK
Here, I haven't told that I have uploaded the file. So, can my boss understand that this has done by ME.

Please clarify me on this.

[Mister Micawber]

.
In none of your sentences is the agent mentioned. Only context will suggest who has done it.
.
_________________
Native English teacher at Mister Micawber's

[Sureshvemuri]

Is "FILE KKK HAS BEEN UPLOADED" = I have uploaded File KKK?
My question is, when I tell to my boss/client this sentence "FILE KKK HAS BEEN UPLOADED", can he/she understand that I (Myself) have uploaded the file?
I am not mentioning that "FILE KKK HAS BEEN UPLOADED BY ----ME"
This what I want to know.

[Mister Micawber]

.

[Yankee]

[Diverhank]

To chime in, in a passive sentence, the person or item that is acted upon is the subject of the sentence. Passive sentences often do not identify who is performing the action. This makes your writing unclear.

To identify who is responsible for what action -- in this case, you clearly want to identify yourself-- active voice is the best way (e.g. I uploaded the KKK file).

[Sureshvemuri]

Thank you all - Mister Micawber, Yankee and diverhank for your time.
Yankee, you really elaborated with great detail, which gave me clear picture.
Diverhank, you made it clear to me and thanks for it.