Question about Eth wallets

[BasilHawkins007]

Hi Everyone,

I have a question about ETH wallet online.

1. If my JSON file created from MEW is stolen by the hacker. Can he have access to my MEW wallet even if he don't know the pass word?
2. What do you think of coinomi wallet? Is it safe?
3. Can I use a wallet like metamask in my android?
4. How to login in an ETH wallet online to avoid hackers?


These seems like a very noob question but spare me your sarcasm or insult. Just help me. Thank you.

[mpufatzis]

Hi Everyone,

I have a question about ETH wallet online.

1. If my JSON file created from MEW is stolen by the hacker. Can he have access to my MEW wallet even if he don't know the pass word?
2. What do you think of coinomi wallet? Is it safe?
3. Can I use a wallet like metamask in my android?
4. How to login in an ETH wallet online to avoid hackers?


These seems like a very noob question but spare me your sarcasm or insult. Just help me. Thank you.

1- No. The password encrypts all the information in the JSON file, if it is strong it can't be cracked.
2- I have never used it but it's used by 500k+ users without problem.
3- Metamask is a Firefox extension. According this site:
     https://github.com/MetaMask/metamask-extension/issues/2367
     it works in Android Firefox. Personally I wouldn't use it because of safety reasons.
4- In my opinion the cold wallet - hot wallet combination is the best for all cryptos.
    The keys are safe in the cold wallet which signs the  transaction and is transmitted by the hot wallet. For informations read this:
    https://www.investopedia.com/terms/c/cold-storage.asp

[BasilHawkins007]

Your reply was very helpful. Thank you very much.

[Yuuto]

Hi Everyone,

I have a question about ETH wallet online.

1. If my JSON file created from MEW is stolen by the hacker. Can he have access to my MEW wallet even if he don't know the pass word?
2. What do you think of coinomi wallet? Is it safe?
3. Can I use a wallet like metamask in my android?
4. How to login in an ETH wallet online to avoid hackers?


These seems like a very noob question but spare me your sarcasm or insult. Just help me. Thank you.

Wallet files are always encrypted with your password on myetherwallet.

However, if the leaked file was your private key instead of your JSON file then it's a bit different. Myetherwallet allows you to export your unencrypted private key which essentially can be used anywhere to access your ETH without any passwords.

To avoid hackers, secure your browsing environment, aka your laptop/computer. Make sure that you store your wallet files in a private and secure place as well.

Coinomi is probably safe, but I still recommend using a ETH-only wallet if you're mainly dealing with ETH, it's much easier to export/import.

[Zeke_23]

Hi Everyone,

I have a question about ETH wallet online.

1. If my JSON file created from MEW is stolen by the hacker. Can he have access to my MEW wallet even if he don't know the pass word?

nope, but if he has the private key, he will have the access on it.

2. What do you think of coinomi wallet? Is it safe?

yes, it is safe.

3. Can I use a wallet like metamask in my android?

yes, as long as you are using web on your android.

4. How to login in an ETH wallet online to avoid hackers?

use your private key instead of json file, and keep it to safety, dont let anyone to have it. just keep it to yourself.

[lobo13hf]

Hi Everyone,

I have a question about ETH wallet online.

1. If my JSON file created from MEW is stolen by the hacker. Can he have access to my MEW wallet even if he don't know the pass word?
2. What do you think of coinomi wallet? Is it safe?
3. Can I use a wallet like metamask in my android?
4. How to login in an ETH wallet online to avoid hackers?


These seems like a very noob question but spare me your sarcasm or insult. Just help me. Thank you.

1 impossible.
2 coinomi is good wallet that gives you a possibility to take your  privatekey from there,it's the same like exodus and other.
3 Just like put an extension in your mozilla but that will be so difficult. I can say that's not a recommended way. Only run metamask through desktop browser.
4 Just make you sure there is no malware, and try to bookmark those ethereum online wallet's site just like mew and my crypto. Remember scammer make a lot of clone to scam others.

[Jansaa]

Hi Everyone,

I have a question about ETH wallet online.

1. If my JSON file created from MEW is stolen by the hacker. Can he have access to my MEW wallet even if he don't know the pass word?
2. What do you think of coinomi wallet? Is it safe?
3. Can I use a wallet like metamask in my android?
4. How to login in an ETH wallet online to avoid hackers?


These seems like a very noob question but spare me your sarcasm or insult. Just help me. Thank you.


[/quoteJ
If you lost JSON file and they have passwords : you lost your coin!
Coinomi is the best app support more coin at this times
Login ETH wallet online may be lost private key! You can check online and send ofline

[GoingAround]

Hi Everyone,

I have a question about ETH wallet online.

1. If my JSON file created from MEW is stolen by the hacker. Can he have access to my MEW wallet even if he don't know the pass word?
2. What do you think of coinomi wallet? Is it safe?
3. Can I use a wallet like metamask in my android?
4. How to login in an ETH wallet online to avoid hackers?


These seems like a very noob question but spare me your sarcasm or insult. Just help me. Thank you.

If you're worried that hackers will get access to your wallet, then I suggest buying Trezor. It practically guarantees the security of your crypto currency. If you use a purse, then in my opinion better MetaMask. And be sure to use an antivirus program!

[Herbert2020]

just to add to what @mpufatzis said above.
you can always open your JSON backup file to see what it contains. use a text editor like Notepad in windows to see it (don't edit anything though). in that file you can see a bunch of public stuff such as your ETH address. and also you can see a field called "ciphertext". this is your encrypted private key which was encrypted using AES-128 (for some reason MEW uses this instead of popular AES-256). this is a strong encryption on its own and with a strong password it is impossible to crack it.

as for cold storage i wrote something here a while ago which you can try:

i have never used this myself because i only invest in ETH for short term profit and for that i only keep it on exchanges for a short time before i dump it. but you can use MyEtherWallet.com to do that.

- you clone the repository to take it offline: https://github.com/kvhnuke/etherwallet
- then open it online to https://www.myetherwallet.com/#offline-transaction and enter your address to get the transactions and make your new one.
- go to offline and use that tx you created to sign using your private key using the repository clone you made in first step.
- take that tx to online computer and open https://www.myetherwallet.com/#offline-transaction again, scroll down to the bottom and pate the raw hex there and click Send Transaction.

use this at your own risk, i have never tested this myself. better try with a small testing amount first

[Gab20]

I my opinion, i am among the users of coinomi, it is safe and reliable.
I use the chrome extension of metamast. So i think metamast is meant majorly for PC.

[valnd]

Hi Everyone,

I have a question about ETH wallet online.

1. If my JSON file created from MEW is stolen by the hacker. Can he have access to my MEW wallet even if he don't know the pass word?
2. What do you think of coinomi wallet? Is it safe?
3. Can I use a wallet like metamask in my android?
4. How to login in an ETH wallet online to avoid hackers?


These seems like a very noob question but spare me your sarcasm or insult. Just help me. Thank you.

1. If anyone have aceess to your json file without your password he cannot hack you. He will do that if he gets your private key
2. Coinomi is safe too
3. Metamask is used on the browser. it is a browser extension.
4. you can use Metamask if you are using system to access your eth wallet, or you can use an andriod wallet or you can as well use myethwallet offline version. you can get it n their github.

[Tanu10]

IT PRACTICALLY GUARANTEES THE SECURITY OF YOUR CRYPTO CURRENCY. AND MAKE SURE THAT YOU STORE YOUR WALLET FILES IN A PRIVATE AND SECURE PLACE AS WELL.

[German Klimenko]

Hi Everyone,

I have a question about ETH wallet online.

1. If my JSON file created from MEW is stolen by the hacker. Can he have access to my MEW wallet even if he don't know the pass word?
2. What do you think of coinomi wallet? Is it safe?
3. Can I use a wallet like metamask in my android?
4. How to login in an ETH wallet online to avoid hackers?


These seems like a very noob question but spare me your sarcasm or insult. Just help me. Thank you.

1. No. It is impossible, but you should have good and secure password
2. Coinomi - the good wallet but I think that MEW is most safe
3. From my knowledge - no. It is able for desktop browsers only
4. Check address in browser few times before logging, don't use unsecure connections, don't download any non trusted files - like wallets of shitcoins

[haidangtp]

A great question, I also want to know about these issues. I often worry about the safety of wallet. Thanks for the good comments.

[kirkarsedat]

i suggest you to use hardware wallet its more useful and secure. Coinomi is safe but i use MEW. its more seure than it. always check your browser address before login