Gotta wonder...
http://www.thedrive.com/the-war-zone/13549/russia-may-be-testing-its-gps-spoofing-capabilities-around-the-black-sea
I don't see how a hypothetical GPS spoofing could have anything to do with a collision in this strait as GPS is for position not collision avoidance. Collision avoidance (electronic tools) uses radar and AIS and the ole eyeball using visual bearings and plotting. Navel vessels in general commonly turn off their AIS broadcast (receiver is left on though) so other vessels cannot as easily determine their course, speed and position.
Fearless prediction is that this collision will be justifiably determined to be due to human error by the on duty bridge officers and nav crew. Think of the Straits of Malacca as a divided highway with the east-west lanes separated by a narrow grass median strip. Think of a car wandering around its lanes or even crossing the median and the unpredictable hazard it is to causing a collision. And... One cannot dismiss arrogance. See link below.
https://www.youtube.com/watch?v=_VHXRYXzEVU