Location-based social networking services Foursquare and Gowalla have released updates to their iOS applications addressing recently revealed security concerns. A report by software developer Martin Kou last week revealed that both the Foursquare and Gowalla iOS applications were sending all information to their respective services using clear, unencrypted connections, making it possible for usernames, passwords and other information to be intercepted, particularly when used over an open Wi-Fi network. Both companies responded quickly to the report indicating that they were preparing updates to their iOS apps to address these issues. Gowalla has released updates to Gowalla and Gowalla for iPad enabling more secure OAuth authentication while Foursquare has released an update to its Foursquare app adding SSL support to provide encrypted submission of user information. All three apps are available from the App Store as free downloads and should appear as automatic updates for current users.