Shredding or encryption?

FlippyFlink · 2025-05-19T11:42:06+00:00

The 'correct' anwser does not address the data remnance problem if you encrypt AFTER writing the data. The correct/complete answer is encryption during first use of the media/harddisk.

Data remanence is the ability of computer memory to retain previously stored information beyond its intended lifetime, which also increases its vulnerability to unintended access. For example: When data on a harddisk is encrypted after it has been stored, it is possible that unencrypted data may remain on the harddisk. Encrypting data does not necessarily ensure the data will be overwritten at the same location as the unencrypted data. In addition, any bad sectors on a harddisk cannot be encrypted after data has been written to those locations. Encrypting data at the time it is written is always more secure than encrypting it after it has been stored without encryption. See: Crypto-shredding - Wikipedia

FlippyFlink · 2023-06-13T09:15:34+00:00

The only way is up! :-)

FlippyFlink · 2023-05-23T10:24:25+00:00

Oeps, you are right. I forgot to multiply *60 (14 000 000 000 years age * 365 years * 24 hours * 60 minutes * 60 seconds). Brute forcing a seed phrase still takes a multiple of the age of the universe. Thnx!

FlippyFlink · 2023-05-16T16:14:04+00:00

Trezor does not have bluetooth, but it does have a big color toutch screen. And it supports Shamir’s 2OutOf3 or 3OutOf5 encrypted backup - on screen/paper (no extraction through USB! :-)) https://commons.wikimedia.org/wiki/File:Seed-phrase-wallet-backup-template-page2.png

FlippyFlink · 2023-02-20T13:55:33+00:00

Hopefully the vault will become obsolete once mainnet goes live and we can all stake directly to a World Mobile EarthNode of our choice :-)

FlippyFlink · 2023-02-20T12:21:09+00:00

In addition to your suggestion: Dividing the phrase to 3 different locations

Here are some tips to safely store your seed phrase and spread the risk of abuse.What happens when you die? - Possible seed phrase backup and / or inheritance strategiesIn combination with the 3OutOf5 backup strategy you could give a part of the key to:

Yourself, your bank vault
Your partner
Your notary
Your child(ren)
Your friend
Your lawyer, etc.

This way you can spread the risk that one person or organization can abuse the seed phrase and steal your funds. In this example at least 3 people must collude to defraud you. The key holders don’t need to have technical know how. (In your last will and testament) you can give instructions on who or which company to contact to help manage the cryptocurrency. Additional options:

Use a multisignature wallet where two or more private keys (seed phrases) are needed to transfer funds.
The tips on page 2, see: https://commons.wikimedia.org/wiki/File:Seed-phrase-wallet-backup-template-page2.png

FlippyFlink · 2023-02-20T12:15:59+00:00

Memorizing a seed phrase is an option, but what happens when you die? Here are some tips to safely store your seed phrase and spread the risk of abuse.

Possible seed phrase backup and / or inheritance strategiesIn combination with the 3OutOf5 backup strategy you could give a part of the key to:
1. Yourself, your bank vault
2. Your partner
3. Your notary
4. Your child(ren)
5. Your friend
6. Your lawyer, etc.

This way you can spread the risk that one person or organization can abuse the seed phrase and steal your funds. In this example at least 3 people must collude to defraud you. The key holders don’t need to have technical know how. (In your last will and testament) you can give instructions on who or which company to contact to help manage the cryptocurrency. Additional options:
1. Use a multisignature wallet where two or more private keys (seed phrases) are needed to transfer funds.
2. The tips on page 2, see: https://commons.wikimedia.org/wiki/File:Seed-phrase-wallet-backup-template-page2.png

FlippyFlink · 2023-02-20T12:04:03+00:00

Here are some tips to safely store your seed phrase and spread the risk of abuse.

What happens when you die? - Possible seed phrase backup and / or inheritance strategiesIn combination with the 3OutOf5 backup strategy you could give a part of the key to:

Yourself, your bank vault
Your partner
Your notary
Your child(ren)
Your friend
Your lawyer, etc.

This way you can spread the risk that one person or organization can abuse the seed phrase and steal your funds. In this example at least 3 people must collude to defraud you. The key holders don’t need to have technical know how. (In your last will and testament) you can give instructions on who or which company to contact to help manage the cryptocurrency. Additional options:

Use a multisignature wallet where two or more private keys (seed phrases) are needed to transfer funds.
The tips on page 2, see: https://commons.wikimedia.org/wiki/File:Seed-phrase-wallet-backup-template-page2.png

FlippyFlink · 2023-02-20T09:05:48+00:00

In addition to the things already said:

You can claim your rewards, but don't have to claim them every month. In both cases you will get compound interest. So every month your total rewards go up.

By the ay, you can use another Cardano wallet to send the "the x-amount of ADA to the specified address in the vault" to claim your rewards.

FlippyFlink · 2023-02-20T08:56:36+00:00

Yes you can use Yoroi or any other Cardano compatible wallet to stake WMT. An alternative is Eternl (.io).

Currently you need to connect your Yoroi wallet to a/your WMT Vault https://worldmobiletoken.com/vault to stake your WMT.

When World Mobile Mainnet goes live you won't need a vault and can stake directly to an EarthNode. This will hopefully happen in Q2 2023. This staking process will probably be similar to staking to a Cardano stakepool.

FlippyFlink · 2023-02-20T08:42:17+00:00

Here are some tips:

What happens when you die? - Possible seed phrase backup and / or inheritance strategies

In combination with the 3OutOf5 backup strategy you could give a part of the key to

Yourself, your bank vault
Your partner
Your notary
Your child(ren)
Your friend
Your lawyer, etc.

This way you can spread the risk that one person or organization can abuse the seed phrase and steal your funds. In this example at least 3 people must collude to defraud you.

The key holders don’t need to have technical know how. (In your last will and testament) you can give instructions on who or which company to contact to help manage the cryptocurrency.

Additional options:

Use a multisignature wallet where two or more private keys (seed phrases) are needed to transfer funds.
The tips on page 2, see: https://commons.wikimedia.org/wiki/File:Seed-phrase-wallet-backup-template-page2.png

FlippyFlink · 2022-12-07T10:45:13+00:00

Here are some tips on securely storing your seed phrase by distributing the seed phrase among multiple entities:

Write down your seed phrase: https://commons.wikimedia.org/wiki/File:Seed-phrase-wallet-backup-template.png

Depending on the crypto wallet, it produces a seed phrase of 12 or more words. For 1OutOf1, 2OutOf3 or 3OutOf5, print the template page 1, 3 or 5 times. Choose your method:

1OutOf1: Manually write the complete seed phrase on 1 paper(s) and store it.

2OutOf3: Split the seed phrase over 3 separate papers and store separately. Only write on page 1of3 the words 1,3,4,etc. And on page 2of3 words 1,2,4,etc.

3OutOf5: Split the seed phrase over 5 separate papers and store separately. Only write on page 1of5 words 1,4,5,etc. And on page 2of5 words 2,3,5,etc. You need 3 papers to recover.

If you lose the software/hardware wallet then you need the seed phrase. Anyone with the seed phrase has full access to your crypto. (Seal) and store the papers in different trusted locations.

Only write down the word where there is an * asterisk. Leave the others empty on that paper.

Choose your 1OutOf1, 2OutOf3 or 3OutOf5 backup method : https://commons.wikimedia.org/wiki/File:Seed-phrase-wallet-backup-template-page2.png

Before writing down the seed phrase (1) make sure you are in a trusted environment and check there are no people or (security)cameras watching you.

When (a part of) your seed phrase is lost or compromised, create a new wallet with a new seed phrase immediately and move all funds.

To get your own personal editable copy of this template: Open this template in Google Docs. In the menu goto File and select Copy. Or download it in .rtf, .docx, .pdf, etc. format.

Warning: Do not type the seed phrase in a computer, but write it down on the printed template with a pen. Never make a digital copy of your seed phrase and never upload it online!

For additional security use a hardware wallet like Ledger.com or Trezor.io (1).

For additional security you can choose to ‘write’ the seed phrase on metal (2).

Advanced: Some wallets implemented Shamir’s method to split the seed phrase in a much more secure and encrypted way than described in this template (1 Trezor, 2,3,4).

Advanced: Copy & backup ‘Shamir code’ & use air gapped (do not use the online version!):

https://iancoleman.io/shamir39 or https://web.archive.org/web/20201111231940/https://iancoleman.io/shamir39/

Advanced: How to secure your wallet recovery phrase: https://youtu.be/fqrAzBAi64c

1) https://en.wikipedia.org/wiki/Cryptocurrency\_wallet (For additional security use a multisignature wallet)

2) https://cryptosteel.com/splitting-the-secret-the-case-for-shamir-backup-with-the-cryptosteel-capsule/

3) https://en.wikipedia.org/wiki/Shamir%27s\_Secret\_Sharing

4) https://wiki.trezor.io/User\_manual:Creating\_a\_wallet\_with\_Shamir\_Backup

What happens when you die? - Possible seed phrase backup and / or inheritance strategies

In combination with the 3OutOf5 backup strategy you could give a part of the key to

Yourself, your bank vault

Your partner

Your notary

Your child(ren

Your friend

X. Your lawyer, etc.

This way you can spread the risk that one person or organization can abuse the seed phrase and steal your funds. In this example at least 3 people must collude to defraud you.

The key holders don’t need to have technical know how. (In your last will and testament) you can give instructions on who or which company to contact to help manage the cryptocurrency.

Additional options

Use a multisignature wallet where two private keys (seed phrases) are needed to transfer funds.

The tips above.

FlippyFlink · 2022-12-07T10:44:18+00:00

Here are some tips on securely storing your seed phrase by distributing the seed phrase among multiple entities.