# Knowledge base

# How to find deleted wallet files

Using Photorec (cross platform)
Photorec can find deleted files from file systems that are not overwritten yet.To seach for Bitcon Core wallets...To search for Electrum wallets...
Using IsoBuster (Windows only)
You can use IsoBuster software to recover deleted files that are still somewhat-partialy existing on a phisical medium. You can find specific signature files from our GitHub.

# How to get access when the password is lost

Use [PasswordMind](https://passwordmind.com/) to create wordlist for [HashCat](https://hashcat.net/hashcat/).

You may rent special hardware if you need to speed up the proccess.

# Hardware wallets and if they are currently hackable

## Ledger wallets

All Ledger wallets use secure chips and thefore are very hard to hack. However, few software hacks for older firmware exist.

##### Ledger Nano S

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##### Ledger Nano S plus

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##### Ledger Nano X

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##### Ledger Star

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## Trezor wallets

Older Trezor wallets use unsecure chips that can be exploited \[link to Joe Grand\]. New Trezor Safe 3 uses secure chip and is proteckted against such attacks.

##### Trezor Model T

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##### Trezor Model One

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### KeepKey

TODO: check if they use secure chips