Blockchain.info has the 12 word seed. The user owns the private keys and the seed. I think it's a good wallet, considering it's a online wallet....
Probably someone got access to his seed. As he uses 2FA, it's very unlikely the site had been hacked
That's because of people like you, I have formed the view that online wallet blockchain.info it is safe and convenient. Therefore, a hardware wallet was purchased and lying on a shelf in the closet, and I used the service blockchain.info. You all know the result... Stolen coins.
Now you are blaming me for your mistakes. You first started to blame blockchain.info, now that it is clearly not their fault, you are blaming me for your disregard of basic security rules.
I asked a few times but he didn't answer how he stored his seed...
I long time could not find the seed. I wrote about it in this tread. Now found,
the seed was stored in several photos on my iPhone 7 .
That's the wrong way to store your seed. That's how the hacker got access to it and stole your coins.
Even if you had a hardware wallet you would have been hacked.
Even if you had a paper wallet you would have been hacked.
Even if you had a bitcoin core wallet on an airgapped pc you would have been hacked.
That was not blockchain.info fault, as it is the most popular wallet out there.When you click on the Seed on blockchain.info they tell many times to write it on paper.
Learn from the experience, store your hardware wallet seed on a piece of paper or an offline environment.