Apple iOS presents unique problems for VPNs , including potential data leaks from certain kinds of traffic . Mullvad VPN, CNET's top VPN pick for privacy, announced on Tuesday that it is implementing a new fix for this issue but leaving the decision in users' hands, since it would mean more work managing iOS updates.  iOS is vulnerable to leaks and  LocalNet attacks , where cybercriminals mimic nearby friendly Wi-Fi networks, such as a common cafe Wi-Fi hotspot . There are ways to fix this issue with VPNs, but it requires using methods to specifically force all iOS app data through the VPN, in Mullvad's case, with an includeAllNetworks configuration. Mullvad has known about this but has been hesitant to use it because Apple's iOS updates really don't like it.…