Security Details - Must be added
If possible then please add few security options.
1- security options for IM's - i.e. everyone should be having the Liberty to choose whether to receive from whom and block unknown/unwanted IM's
2- Hiding phone number, email id, birthday and photo from unknown people
3- two step verification login
4- better recovery options for account-chat-contacts in case of hack or device lost
Please review and apply these suggestions for a better user safety and it will also help you in increasing your business.
Rest it is your wish.
Skype is lacking alot of security measures and thus people are not easily trusting Skype.
Gaurav Agarwal commented
Microsoft, please check it and find a solution