Apple AirDrop is a popular way to wirelessly share files with each other. But security weaknesses could allow an attacker to obtain a victims phone number and email address. The problem lies in how AirDrop determines if a nearby device belongs to somebody the user already knows. Apple hasn’t fixed the problem almost two years after being told about it, despite 1.5 billion devices worldwide being potentially vulnerable. Researchers have developed their own proof-of-concept solution called PrivateDrop”]