Sorry for continuing topic on this forum but I got more responses here then on  nem.io.
Does anyone of you have any experience  with malicious  software.Is it unnoticeable. I was online when coins was stolen.My device is protected. Allowing installation  from unknown  sorces was disabled  . I did not  installed any other apps  for the last couple of weeks. How  malicious  software  can  get  access  to app  protected  with very strong password and the most disturbing  why  developers of this wallet  do not respond to this issue. I posted it on many places.