San Diego International Airport was ranked worst among 45 of the busiest airports as far as WiFi hacking safety, according to a report from the Cloud security company Coronet. The study reviewed data over a five-month period starting in January. Based on that review, each airport was assigned a threat index score, which is an indication of device vulnerability and WiFi network risks. While free, public airport WiFi may often be a “godsend,” according to the report, the networks are typically unencrypted, insecure or improperly configured. Dror Liwer, Coronet’s founder, said business travelers in particular put not just their devices but their company’s entire digital infrastructure at risk every time they connect to WiFi that is unencrypted, unsecured or improperly configured. The other nine most vulnerable airports were: John Wayne Airport-Orange County, William P. Hobby (Houston), Southwest Florida (Fort Myers, Fl.), Newark Liberty (Newark, N.J.), Dallas Love Field, Phoenix Sky Harbor, Charlotte Douglas (Charlotte, N.C.), Detroit Metropolitan Wayne County and Logan (Boston). The safest were Chicago’s Midway and Raleigh-Durham in North Carolina.