unique ID

[mipari]

What is the importance of unique id in blockchain wallet ?
if anyone knew my unique id, is it vulnerablity of being hacked ?

[odolvlobo]

There nothing called a "unique id" in bitcoin.

Perhaps you are referring to a "private key". A private key is used to spend bitcoins. Private keys must be kept secret. They are stored in (and generated by) a wallet.

Perhaps you are referring to a "Bitcoin address". This is used to send you bitcoins. It is derived from a private key. It must be public so that bitcoins can be sent to it.

Perhaps you are referring to a "seed". This is generally a 12 word phrase, though the number of words can depend on the wallet. Some, but not all, wallets use a seed to generate private keys. It must be kept secret because someone can use it to generate your private keys and spend your bitcoins.

[CardShare]

This might help you out.

http://blog.onename.com/blockchain-id/

[Lutpin]

You wouldn't be talking about blockchain.info and their web wallet service, would you?
(Their convenient naming is a great source of confusion for newbies)

[Herbert2020]

with blockchain.info there are two different things you may be calling unique ID!
1. your Wallet ID:
acts as your username to log in your wallet and you should not share that with anyone:
https://blog.blockchain.com/2015/05/22/blockchain-wallet-identifier-basics-for-web-ios-android-wallets/
that is a series of letters numbers and dashes:
########-####-####-####-############

2. your recovery phrase aka Seed:
which you absolutely shouldn't share with anyone because that can be used to directly gain access to your funds.
that is a series of words (i think it is 13)

[mipari]

with blockchain.info there are two different things you may be calling unique ID!
1. your Wallet ID:
acts as your username to log in your wallet and you should not share that with anyone:
https://blog.[Suspicious link removed]/2015/05/22/blockchain-wallet-identifier-basics-for-web-ios-android-wallets/
that is a series of letters numbers and dashes:
########-####-####-####-############

2. your recovery phrase aka Seed:
which you absolutely shouldn't share with anyone because that can be used to directly gain access to your funds.
that is a series of words (i think it is 13)

sorry , my mistakes. that's what I'm talking about "wallet ID".
I had a case that someone had my wallet ID in blockchain. when he accessed my wallet there is no notifications in my email and when he sent my bitcoin to the other bitcoin wallet there is no notifications either.
normally when we accessed and sent the bitcoin, of course we will get the the notification. in my case 0.21 BTC has stolen.
the question is, Whether blockchain can be accessed through CMD ?

[CardShare]

Blockchain and CMD??   I really think you need to do some more reading on how bitcoin works.  It has nothing to do with CMD,

[mipari]

Blockchain and CMD??   I really think you need to do some more reading on how bitcoin works.  It has nothing to do with CMD,

well, its my assume. in fact I don't even know what tricks he did.

[CardShare]

If you have been hacked you most likley have some virus or wallet snatcher or key-logger on your machine.

My advice would be to download malware bytes from here : https://www.malwarebytes.com/

runs a full scan - make sure to go into the options of the scan and check the box that says "Scan for rootkit"

Once you have finished the scan if there is nothing showing its time to do a boot time scan with AV.

I like kaspersky antivirus the trial can be had here : https://www.kaspersky.co.uk/downloads

Make sure you update the AV and run a full boot time scan with it..

If still nothing is showing then you possibly have a "bad Bios" rootkit somewhere.

Always keep you wallet ID safe. I never advice keeping it on your machine I keep mine in encrypted SD cards that I use only with once PC that dose nothing but hold my coins. that way I can rest asure I would be picking up anything nasty online and it get my wallets files or my wallet keys.  Your seed also should be protected.. I know my seed is normally 12 words.. I add words in that only I know are the wrong words so even if someone did get my seed they would struggle to pull the legit seed out as there are additional words added random locations.

[odolvlobo]

sorry , my mistakes. that's what I'm talking about "wallet ID".
I had a case that someone had my wallet ID in blockchain. when he accessed my wallet there is no notifications in my email and when he sent my bitcoin to the other bitcoin wallet there is no notifications either.
normally when we accessed and sent the bitcoin, of course we will get the the notification. in my case 0.21 BTC has stolen.
the question is, Whether blockchain can be accessed through CMD ?

It is not enough to know just the wallet id. The thief must also know the password.

One of the dangers of a using blockchain.info wallet is that phishing attacks are common. Many people have lost their bitcoins by accessing their wallet through a link in an email or google search.

[mipari]

sorry , my mistakes. that's what I'm talking about "wallet ID".
I had a case that someone had my wallet ID in blockchain. when he accessed my wallet there is no notifications in my email and when he sent my bitcoin to the other bitcoin wallet there is no notifications either.
normally when we accessed and sent the bitcoin, of course we will get the the notification. in my case 0.21 BTC has stolen.
the question is, Whether blockchain can be accessed through CMD ?

It is not enough to know just the wallet id. The thief must also know the password.

One of the dangers of a using blockchain.info wallet is that phishing attacks are common. Many people have lost their bitcoins by accessing their wallet through a link in an email or google search.

probably right about phising, because when my btc has stolen. the wallet address has been changed quickly.
I'm still wondering why I didn't get any notification at all

[mipari]

If you have been hacked you most likley have some virus or wallet snatcher or key-logger on your machine.

My advice would be to download malware bytes from here : https://www.malwarebytes.com/

runs a full scan - make sure to go into the options of the scan and check the box that says "Scan for rootkit"

Once you have finished the scan if there is nothing showing its time to do a boot time scan with AV.

I like kaspersky antivirus the trial can be had here : https://www.kaspersky.co.uk/downloads

Make sure you update the AV and run a full boot time scan with it..

If still nothing is showing then you possibly have a "bad Bios" rootkit somewhere.

Always keep you wallet ID safe. I never advice keeping it on your machine I keep mine in encrypted SD cards that I use only with once PC that dose nothing but hold my coins. that way I can rest asure I would be picking up anything nasty online and it get my wallets files or my wallet keys.  Your seed also should be protected.. I know my seed is normally 12 words.. I add words in that only I know are the wrong words so even if someone did get my seed they would struggle to pull the legit seed out as there are additional words added random locations.

there is no keylogger pluged in my machine , how could it be ?
by the way thanks for the advice .