Recently many people who bought bitcoin years ago find themselves sitting on an untouchable bounty. Those lucky guys who purchased or mined just a few bitcoins at the start of the age of cryptocurrency nowadays can boast about their savings. However, some of them are now in a painful limbo,because they can't remember the complex security passwords needed to get to their bitcoin wallet. Unlike a bank, bitcoin has no central hotline to call for a reset. This is really a bad thing,it's like forgetting a bank account password, but there's no bank to call to reset it. That money is lost forever. That might be a lot of money at today’s exchange rate.
Actyally, this bad thing happened to me last year, and my friend recommend this website:
http://recovermybtc.com/ to me,she said she has retrieved her bitcoin wallet password through it,and I download this software,it really works after I used it,and you need to pay some service fee to them, but it's not high.Somebody who lost their bitcoin password can make a try, good luck.