where no third party has a hand and there is no chance of losing money.
I wouldn't go that far though. A lot of people have lost money getting their funds stolen one way or another.
I think that is an issue for personal security not the Bitcoin Transaction Security itself. No one can hijack anyone transaction happened on blockchain and the probability of a private to be hacked if its not used on untrusted website is very slim. I mean the reason why people hacked is because they let the hacker hacked them. But technically speaking about blockchain, it's very hard to hack a transaction because its peer to peer.
Everything is user's fault because Bitcoin itself, again by design, could even be considered unhackable. But can we isolate Bitcoin in a vacuum? I mean, can we make use of Bitcoin apart from its practicality and real-life features? Can we even discuss about Bitcoin apart from the people using it in their day to day transactions? Of course not. So it is very hard to say that with Bitcoin there is no chance of losing money because the network is impenetrable by hackers and scammers.