Mystery bidder mysteriously outbids itself for Straight Path

Straight Path Communications has found itself in the middle of a bidding war, but no-one’s 100% sure who is on either side.
The fun started back in April, when AT&T confirmed its intention to buy Straight Path for $1.6 billion, seemingly to access its portfolio of millimetre wave (mmWave) spectrum. This bid was then superseded by a superior bid from a ‘multinational telecommunications company’ of $1.8 billion, before last week the ante was upped again to $2.3 billion, once