BAD Panda, Bad.
Panda issued updates and steps to recover
http://www.idigitaltimes.com/panda-...computer-heres-how-fix-wiped-files-and-422132
The anti-virus products named by Panda Security as vulnerable to the glitch are as follows:
Panda Cloud Office Protection
Panda Cloud Office Protection Advanced
Panda Antivirus Pro 2015
Panda Internet Security 2015
Panda Global Protection 2015
Panda Gold Protection
The solution which restores the quarantined files has been automatically deployed in all the affected products. We are working on a tool to be installed on those computers which require a manual installation of the solution. We will update the information as soon as it is ready.
Panda Security has issued this manual update solution for affected computers:
http://www.pandasecurity.com/usa/homeusers/support/card/?id=100045