If any company/website that offers too good to be true rates in short period of time (even a 1% earning a day), it's a 100% obvious scam, . Nothing more to say.

With more power comes more responsibilities. Bitcoin sure is a powerful technology but there are some problems with it.
For instance, lets assume the whole world starts utilizing bitcoin but since you know that the current volatility is itself too high for an asset just imagine how high it's volatility will reach if the whole world starts utilizing bitcoin. For it to be used globally, it's volatility should be decreased which is kind of difficult as per the current trend.

I only use windows defender anti-virus for my windows PC. Do i need to install a better anti-virus to
prevent my PC from a hacker? btw I also use ledger nano to hodl my coins.

Technically the 24 words are a mnemonic phrase, from which the seed is created, which then in turn is used to derive a HD wallet from.
Ledger, Trezor and other hardware wallets did not invent the technology that is used to do that, they apply several BIPs in their devices for that.
To list them, there would be:
BIP39 - The wordlists used for mnemonic phrases and how to derive seeds from them.
BIP32 - The method to build HD wallets from a seed.
BIP44 - Extending BIP32 via defined derivation paths.

As you can see, the full path from mnemonic phrase up to the private key/public key pair is done using open source technologies, meaning any other software and hardware wallet can implement the exactly same method.
Such has been done ample times and there is a long list of alternative ways to get to your keys and thus funds in case you lose your device / it becomes unusable.

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A few more points of information:

Both the Ledger and the Trezor do use proprietary software, but not in the process of generating keypairs.
slush and stick are co-authors of BIP39 & BIP44, and the founders of SatoshiLabs, the company selling Trezors. So while they created some of the software used, they have made it available to everyone.

The hardware manufacturer designed the device to work with other wallet providers, so you only have to use the "seed" that was generated, when you configured the device, to enable you to "import" those coins onto other wallet provider's software. 

You do not have to use your hardware wallet with the software that were provided by the manufacturer, you can use it with other software to access the coins.    If the company goes bankrupt, other software developers will quickly jump at the opportunity to grab that market with all those customers. 

I really do not know why you guys have that levels of security I had used blockchain.info before but never had any security issues stored a lot of money there but never used anything except 2fa (email and password) that is it.

Actually, you give open holes to hackers otherwise it is not traceable or hackable...

Apart from all these process of using different wallets for securing the funds you should also have the responsibility that you're a cryptocurrency user. You should not reveal to outsiders that you are a bitcoin user, because in these days of increasing hack and crimes happening to steal bitcoins what we reveal as a pathway and keep on following you.

I know that Press section is being moderated really hard these days, and maybe rightly so, but I think this article by Forbes worth discussing here.

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Now, crypto trading is coming to Telegram, a messaging app which boasts more than 300 million users around the world, via bitcoin and cryptocurrency wallet provider Button Wallet.

"Cryptos' biggest obstacle is mass adoption and what we’ve created will help people comfortable with trading cryptocurrency without using real money," said Alex Safonov, co-founder and chief executive of Button Wallet.

Reda more:

https://www.forbes.com/sites/billybambrough/2019/08/26/telegrams-300-million-users-could-soon-be-trading-bitcoin-and-cryptodespite-serious-security-warning/

I'm trying to improve/perfect as much as possible the security of my Bitcoin.

My current security is:

1. Use Ledger Nano S to store keys
2. Have 24 word back-up phrase stored in multiple hidden locations that no-one will find
3. Only access my BTC on hard-line internet connection (no wifi to stop hackers intercepting)
4. Only access my BTC on a computer that I rarely use and update the virus software to stop trojan horse/remote access.


I'm wondering a few things though:

1. If the Ledger Nano company goes out of business, where will my keys go? How will I access them?
2. Is there anything else obvious I can/should do to improve this process?

Thanks for any comments or suggestions.