I created my wallet at blockchain.info
https://blockchain.info I get my wallet id ( for login) and I created my password too. After login I got my wallet address id to receive the funds (or public key for sharing)
as "1NXnzET4nk2Jkn6ySZfBZALV5eJyNJXBRk". But I am not finding any private key in that account.
Is I am missing something or these online wallet do not provide private keys to users ?
the funds on that wallet is lost from a large number of users and when these users complaint then they say that they do not know and if the user lost their bitcoin then it is the malware on their PC. How is it possible that a malware comes to the PCs of thousands of users at a time and that remove their funds within a minutes from these wallets without login to the accounts!!!
The malware come as Key-Loggers which record all your keyboard strikes and mail it periodically to the host. On scanning the data, it becomes very easy to find blockchain.info's unique identifier following the password.
I think he is talking about without notice of login to his account so if someone recorded all of your keystrokes there are still possibilities that you can be still notice that someone login into your blockchain account via email unless if you turn off the email notification.
I suggest for those who wanted to keep safe their online wallets or PC use Kaspersky total security because it supports cryptocurrency and protect all of your browser.
Online wallet platform can be exploited from their vulnerabilities as well and do note that antivirus adds updates on the basis of vulnerabilities known . What if in the case of unknown vulnerability found by black hat hacker first? Ofc antivirus will not detect such as malware.
Thus it is normally advised to not to keep your coins at online wallet or if you even want to use then keep only the amount of coins that you plan to spend over a time and use paperwallet to hold the remaining.
Check this :
https://bitcointalk.org/index.php?topic=581411.msg6354731#msg6354731 (White hat hacker discovered the vulnerability and hacked bitcoins from blockchain.info and returned those coins back)4