Virtual Shield

Virtual Shield is a Winx defensive spell used by Tecna, in which she create a green shield made of numbers and becomes a globular one.

Times When Used

 * Season 3 Episode 13 - Used to defend herself.

Trivia

 * This spell looks similar to Power Shield and Energy Barrier.
 * In the Nickelodeon dub, this spell is named "Firewall".
 * In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.