"...not only an open security threat, it also drains my phone's battery power."
Both true.
Patches for Bluetooth software, OS's, and devices are being developed and released, check regularly for updates on each Bluetooth enabled device. But, some devices and distros of 'Droid just become abandonware if the manufacturer/developer decides to move on and not look back, or if they go out of business.
Obsolescence is the only future for these poor minions.