Hello, you did not enter a text to which this question refers, which makes it impossible to answer it exactly, but I will try to help you in the best possible way.
The word "securely" means "to do something safely and without threats." This can be related to different things and activities. In addition, we must emphasize that the "ly" theme allows an adjective to be transformed into adverb. In this case, the "ly" turns the adjective "secure" into the adverb "securely".
