BlueChop is an attack that the disrupts any
established bluetooth piconet by means of a device that is not
participating the piconet. A precondition for this attack is that
the master of the piconet supports multiple connections (a feature
that is necessary for building up scatternets).
In order to BlueChop a piconet, a device that is not participating
this piconet spooofs a random slave out of the piconet and contacts
the master of the piconet. This leads to confusion of the master's
internal state and disrupts the piconet. This attack is not specific
to any device manufacturer and seems to have general validity.
For questions about the BlueBump attack, feel free to ask Adam
Laurie, Marcel Holtmann or Martin