<snip>
Worried but interesting! But how it could happen

Are you sure you haven't placed those bet by mistake? Or anyone came to your home and placed the bets while you were outside.
I never used Multiply BTC... Well, "never" is a strong word, I used to bet 1 satoshi a few years back trying to "cheat" the system but I stopped when I didn't get results. As you can see on my personal stats, the hourly free rolls severely outweight the Multiply BTC rolls as I rarely (shouldn't say never) used it...
https://i.imgur.com/pByvQFk.pngBut, to be clear, I NEVER, and I strongly point that word out, played on Multiply BTC the last 2-3 years. I only used the faucet and the intrest, that's it (and a bet on Paris Saint Germain that a friend claimed to be a "sure win" and they lost, so I never bet anything on sports ever again either

). And such a thing never happened before. My girfriend is from another city and she was at work and I live alone with my dog when my gf doesn't come to visit. Now, a break-in would be possible but I doubt someone would break into my home, wager on freebitco.in, win a bunch and then leave...
<snip>
Moreover if someone else(hacker) did it by login to your account then he wouldn't stop betting after reaching 0.45142584 btc. Cause he (hacker) won't be able to withdraw the balance to his address without having access to your email. Probably he will continue to bet until everything become zero. Have you ever received new login authorize message which wasn't performed by you?
That's what actually bothers me!! If a hacker gained access and won these BTC, he'd at least make a withdraw attemt to sent all these to his adress. No withdraw attemt was made! I would know because withdraw attemts DO NEED a mail verification.
Honestly, I'm just trying to figure out what happened. I'm 110% sure it wasn't me doing these rolls, even if it was me, I'd NEVER use my whole balance to a single roll. I'm somewhat glad it happened but I can't wrap my head around coming back home and instead of finding all these satoshi, I might as well would find my balance at zero.
I trully hope noone else experiences that...!