Hi
Some one had installed a spy tracking app on my phone (I'm sure that is a spy app) and when kasspersky want to delete this app password of application is needed .
What should i do?
Which app are you talking about? Are you sure it's a spy app because Kaspersky says so? Antivirus apps often give false positives, so it might not be what you think.
All of the above, after you verified it's a spy app. Those are rather hard to install, and often times people think they've been hacked when they actually haven't. What makes you think there's a spy app on the phone?