After being forced to open up the app market for iPhone users in the European Union, Apple has announced in an extensive paper on Friday that it will also block dangerous apps from rival marketplaces. Even when alternative marketplaces become available to iPhone users in Europe, only apps that have undergone a security check at Apple may be installed, the company explains in a new whitepaper. As such, iPhone owners will not have the same freedoms as on Google’s Android platform, where smartphone owners have long been able to download and install apps that were geoblocked, banned or just not av…