A major concern of WiFi users is the vulnerability of encrypted data sent through WiFi. Studies have shown that the most common wireless encryption standard, the WEP or Wired Equivalent Privacy, was easily breakable even when configured correctly. WiFi networks are typically set to open mode, or encryption-free mode. These networks can be monitored and be used to read and copy any personal information that may be transmitted over the network unless more secure methods are use such as accessing secure web pages or VPN.To counter this problem, WiFi protected access have began shipping since 2003 and are now available in a majority of WiFi capable products.