Risk of data on rewritable optical media being recovered after being erased

When some software reads rewrited CD-RW or DVD-RW or BD-RW on the optical drive of one's notebook(or desktop) machine, is it possible that some malwares get the erased data in that CD-RW or DVD-RW or BD-RW?

Off course, this subject is related to whether we can erase the optical medium completely.

For example, in a buing software Xfbu that I usually use
going down the menu:

• Actions
• Blank CD-RW
• Blank mode

Then there are two useful-looking blank mode options:

• "Full Blank (slow)"
• "Full Format"

Do these two blank mode options completely erase the old data on the optical medium?

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