Since your bank details are not shared by your bank upon linking Aadhaar and PAN cards, UIDAI does not have access to the bank details of any individual. Similarly, nobody can get access to your bank details just by knowing your Aadhaar number. Even if you link your mobile number with your Aadhaar, the bank account(s) registered with the same does not show up in the UIDAI’s Aadhaar log system. Aadhaar can only be used as proof of identity and does not make you vulnerable to any such organisation that might ask for valid identity proof.