Is my e-submitted bid is secured and confidential?

YES. First of all, the e-procurement system has a time bar for assessing your bid from any party including the Employer, Bidder or Administrator. Bidder's e-submitted bids could not be viewed by the Employer till the end of bid submission time. Secondly, the e-submitted bids could not be downloaded by the Employer till it is time for opening of bids.