Massachusetts lawmakers are weighing a near total ban on buying and selling of location data drawn from consumers' mobile devices in the state, in what would be a first$-$in$-$the$-$nation effort to rein in a billion$-$dollar industry. The legislature held a hearing last month on a bill called the Location Shield Act, a sweeping proposal that would sharply curtail the practice of collecting and selling location data drawn from mobile phones in Massachusetts. The proposal would also institute a warrant requirement for law$-$enforcement access to location data, banning data brokers from providing location information about state residents without court authorization in most circumstances.

The Location Shield Act is in response to what ethical issue based on the synopsis above?