considering crypto investing, i research and check projects no matter for long/short term investment. i always check founders, whitepaper with business model, roadmap and transparency of the project

One of the sleeping storage coin is Filecoin, it's still cheap for me. This project got lot of investor and community is incredible, this is a sleeping giant for me. Their market cap is huge, the price of Filecoin is still on sideways which for me is the best for allocation, alternative is Siacoin.

I am now affraid to provide my information to third party because google that is not safe to use warn me about my twitter account password that has been compromised recently, I do not know if this is true but I believe it can not be lie, I changed my twitter account password immediately. I have forgotten that I back up on google, I removed the back up immediately because of what I learn from our forum bitcointalk that it is not also safe to have back up online.


I have read somewhere before about making use of blockchain to store data, I believe the strongest blockchain can be able to do that which is bitcoin blockchain. If blockchain is not hacked and unable to be attacked the data stored will be safe. I was and I am still wondering why third parties are not using blockchain to store customer data because it will be the safest. They use their own centralized data base that are often susceptible to hackers and now our data are no more safe. There are some people that will just be emailed and they will not know that it is from hackers, they will be scammed by that unless they know about such attack.

Why are third parties are not using bitcoin biockchian or blockchain to store customers data?  
If they use it to store customers data, information will not be leaked? Like bitcoin I assumed YES.
Or are the third parties affraid because they want to be always centralized?
What is the remedy to customer data leakage?