II am 72 years retired and old . I am passing my old days with my son in north america.I have also taken citizenship . but I love my country.So I am in contact with my Indian friends and neighbours. I had an acquaintance with a computer guy in India who is with me on Whatsapp also. I had a software download problem ,I asked help from him he said he can help me through a window sharing app and did a 15 minute job for three days . Although he successfully accomplished the work but later my son warned me that he has taken so much of time and he is also a computer professional certainly he has sucked your all documents and downloads which has bank passport and sensitive information too. What step I can take by sitting here in North America whereas he is in India.Please advise me to protect myself from any Privacy and Security breach threats.