Published every weekday, the Switchboard highlights five tech policy stories you need to read.

Lawsuit: Sprint charged US gov’t $21 million too much for spying expenses. "The US government filed suit against Sprint," reports Ars Technica, "alleging that the company overcharged government agencies when submitting expense reimbursement requests for wiretap operations that spied on Sprint customers."

Ukraine hit by cyberattacks: head of Ukraine security service. "Ukraine's telecommunications system has come under attack," Reuters reports, "with equipment installed in Russian-controlled Crimea used to interfere with the mobile phones of members of parliament, the head of Ukraine's SBU security service said on Tuesday."

Chinese government builds its own 'ChinaSo' search engine. "The Chinese government is having another pop at the local search market after merging two previous failures into a new service, dubbed ChinaSo," according to The Register.

Justice Department backs broadcasters in Aereo dispute. "Justice Department lawyers argued that Aereo’s broadcast television streaming service infringes on broadcasters’ copyrights and asked the court to reverse a lower court’s decision that found in favor of the startup," Re/code reports.

Facebook in talks to acquire drone maker Titan Aerospace. "Facebook is interested in using these high-flying drones to blanket parts of the world without Internet access, beginning with Africa," according to TechCrunch. "The company would start by building 11,000 of these unmanned aerial vehicles (UAVs), specifically the 'Solara 60' model."