Accordindy to Microsoft many Public Networks are not security enabled, this clearly includes GRAN CANARIA.
Accroding to Microsoft Wifi networks are only consider secure if they have a single forward hashed algorythmetic based encryption encoded password to connect to the service via zero point configuraton services built into the Windows operating system for configuration of 802.11 adapators such as those that conform to .Microsofts standards.

Microsoft have improved their support for secure Wifi connections starting from Windows XP service pack 2 throught to Vista and Windows 7.
Ensure your Wifi based data access is secure when developing socket based applications
Microsoft have an excellent XAML based graphics package called BLEND, this product is distributed across the world and is know to professionals as BLEND, it's full title being Microsoft Expression Blend.
Below is the typical Windows XP based display system when windows control the connection to a Wifi service provider
We will be following the developments on the new technical site being prototyped now called webica.es
Forward leaders ready for the Webica financed group opening offices in Las Palmas early in 2012 ready to compete with the German based SAP group.
Microsoft Spain have not formaly announced plan to open dealerships in the Canary Islands yet but stay tunned and checkout the latest news on
Webica.ES
We would like to point out that Blend WIFI service in Gran Canaria are nothing to do with Microsoft.
Blend Canarias is just small company tat happened to chose the same name as a new range of Microsoft Web related products.