Taxi medallion to "The Washington Post", medallions were "the best investment in America", but—due to increased competition from app-based car services and transportation network company growth from companies like Uber and Lyft—taxi medallions are now decreasing in price. In 2013, the price of a medallion was $625,000. In 2014, that price had risen to around $700,000. In 2014, a medallion was worth nearly $700,000. The total value of all medallions and assets related to them had a value of $2.5 billion in Chicago in 2013. In 2012, medallion prices ranged from $87,000 to $385,000. In 2015, Chicago's average medallion price was under
Smartphone image file formats. With the rise in number of mobile medical apps in the market place, government regulatory agencies raised concerns on the safety of the use of such applications. These concerns were transformed into regulation initiatives worldwide with the aim of safeguarding users from untrusted medical advice. Smartphone malware is easily distributed through an insecure app store. Often, malware is hidden in pirated versions of legitimate apps, which are then distributed through third-party app stores. Malware risk also comes from what is known as an "update attack", where a legitimate application is later changed to include a malware component,