Lol, I remember at school in the 1980s when the head of computers was all proud of their new password security system on their s***ty Research Machine's 480Z network. After school the teacher caught me trying to crack the master password, but instead of having a major go he simply said, carry on, continue, you will never get past this system. The next day I went up to him and whispered into his ear the master password which I always remember was the head master's 3 initials followed by a space, followed by his 3 initials lol! Unexpectedly he went nuts and banned me from the computer room, but after a few days I was invited back and he actually let me work part time in the evenings and breaks as a server administrator which I loved. I remember seeing folders of school reports and exam papers (not public exams as they were send securely by post in those days), I choose not to tamper or even look at them, but I could have done and I think the teacher respected me for that. Back in those days it wasn't illegal to hack into a system as long as you caused no damage, but times have changed and it's now obviously a criminal offence.
Back to password security, yes I know very well how easily passwords can be hacked/cracked as I did some volunteer work as a sysop on a busy live server and website for a while and I had to defend against various cyber attacks (well it wasn't seen as work to myself as I enjoyed it, but sadly the site is now closed). One attack involved a database leak from a similar website I wasn't involved with where some people used the same username and password, a hacker then started using this information to compromise accounts on our system. I had to download the leaked database and then get the server to crosscheck people's login details as they logged into the system, then if they matched I then forced users to change their password and also verify their email. It was surprising how many people used the same username and password and many even didn't listen to an initial news announcement I put on the site warning them to change their passwords after the leak until I forced them to.
If people think they're safe please visit https://haveibeenpwned.com/ and enter your username and/or email address, a large proportion of people will be shocked and then finally you may take password security more seriously. Also these are only known leaks, there are obviously a lot more.
People may also want to watch this video: