Hacked several months ago lost a lot of bitcoins (87) ::sighs::

[Iranus]

Something I don't understand and i'm furious at Bitstamp I made a withdrawal sold about 5,600 of bitcoins I RECEIVED that email confirmed it... yet the part where this asshole withdrew the rest of my bitcoins in Bitstamp I NEVER received ANY email yet on the bitstamp log it says the person withdrew 34 bitcoins ,Bitcoin withdrawal request: email was sent to user, Bitcoin withdrawal request: email confirmed by user <---- that NEVER HAPPENED and i've opened security tickets on bitstamp explaining that I NEVER received that email oking that shit!.... what the fuck how did that happen is it possible that it was negligence on the end of Bitstamp or an inside job? I know that sounds conspiracy minded but what the hell am i supposed to think if the 1 withdrawal i know i did i received an email for and confirmed it and i only have MY email address for the website i never received any other notification emails for that HUGE bitcoin withdrawal what the fuck??

It's unlikely to be an inside job.  Bitstamp is subject to EU regulations and audits which makes it very difficult for them to pull off such a maneuver. 

The chances are that you had a keylogger - a type of malware that many antivirus programs can't detect.  It monitors everything you type so that the virus can find details about bank accounts, potentially e-mail accounts, and other sensitive information.  I would suggest that you instantly factory reset your computer, set up a new operating system and more.  DO NOT ACCESS YOUR BANK ACCOUNTS.  The keylogger may have been monitoring your activity for weeks before to pull this off.

This is why many people hold their Bitcoin on computers that never have access to the Internet, on hardware wallets and in paper wallets when they're intending to hold a significant amount for a long period.  I'm extremely sorry for your loss and hopefully this can serve as a lesson to others that holding your Bitcoin online is never safe.

[not.you]

If my desktop ip address was the ip used to withdrawal all my bitcoins is it possible a person on the Bitstamp exchange on their end did the hacking?  

I don't know, but it would lead me to believe the funds were accessed by your computer.  Either somebody physically went to your computer or remotely.

How else could they manipulate the ip addresses if i'm in atlantic city nj on my cell and my desktop computer pc IP in new york is allegedly being used to do the bitcoin withdrawal thing....

Unless there was a break-in from an ex-girlfriend or somebody you had a recent falling out from, I'd think remote access.  If your internet is always on, then somebody may have found a "backdoor" port into your computer.  You may have received an email with a photo, a link to nowhere or some other embedded Trojan.  

If you were gone, the person probably new you were going to be gone.  They may still have access to your computer.  My advice would be to find a professional you trust to analyze your computer.  It could be a couple grand or a couple hundred bucks, but that's where I would start.  I think there is something on your computer like a keylogger, which are über hard to find without monitoring the network traffic.

EDIT: Think of your computer as potential evidence.  That's the best place to start, imo.

Totally agree with this.  All signs point to it having orginated in your own PC.  Did you check the browser history?  It does sound like they deleted the email before it was pushed to the phone.  I sometimes do that by accident, check it in one place, delete it, and then it never even gets to the phone because by the time the phone checks for email it has already come and gone.

You should consider your PC compromised.  Unless you actually know a person who may have done this while sitting at the PC...

[GuitarAnarchy]

I went through my browser history in Feb. after it happened and I just went through it again right now and there's nothing that would point to someone going on this computer. I live with my parents and my door room is always locked when I go out. My mom and dad are not computer literate they are the only ones I know that have bitcoins. My computer was left on when I left to Atlantic City from January 31st-Feb 1st (the hack occurred Feb 1st sometime in the very early morning) My cell phone was connected to Harrahs wifi at the casino for which I put my user credentials you're allowed to connect up to 2 devices so I did my firestick and my cell phone. But people think it happened on my desktop computer so.... there's absolutely no trace of this hacker person doing anything on my computer it's driving me insane. Bitstamp did say the withdrawal came from this desktop computer because the IP address was the same how in the fuck it makes absolutely no sense lol. Throw the idea that anyone went on this computer in person because my parents were home the whole time and they don't have the intelligence capability nor would they do that to me lol..... So the Bitstamp hack people on this site think it happened on my desktop computer which according to the ip log on bitstamp makes sense but it doesn't make sense to me because how in the happy fuck did it happen.....

[Sr.Urbanist]

My computer was left on when I left to Atlantic City from January 31st-Feb 1st (the hack occurred Feb 1st sometime in the very early morning)

External hack possible.  I'd assume they are still monitoring and have access to your computer.

.... there's absolutely no trace of this hacker person doing anything on my computer

Not an accident.

So the Bitstamp hack people on this site think it happened on my desktop computer

Yup. Bitstamp is one of the most strictly regulated exchanges.

how in the happy fuck did it happen.....

It could have been anything from a targeted attack (somebody overheard you talking about your BTC) or a phishing attack (bad website/program). As others have stated, DO NOT ACCESS ANY BANK ACCOUNT INFO.  I'd get onto a different computer and access your accounts to change all of your passwords to P@559hra53sesTh47ar3HARDt0kN0^^ (not my password).

I agree with Iranus.  You'll need to completely reload your computer.  I'd even 0 out the HD.  Assume the person is monitoring everything from your computer.  If there is any chance of tracking down this SOB, take your computer to as really good computer professional to copy your PC into a virtual box.  This way the person will still think they have access to your computer, but won't.  You can then have a monitor traffic monitor for this box. 

If you give it to the right person and take the due care, you may be able to get the person back into your computer.  Do not type anything about (emails, posts, etc.) about doing this.  It can take a while, but the person will come back.  Then, you'll be prepared.  I think the person knew you were in Atlantic City.  Think about emails, reservations, chats, documents that would have laid out your itinerary. 

IMO, you have three choices:
1. Try to put it in a virtual machine / reverse hack (get coins back?)
2. Clear your computer completely and reset all passwords (no chance of reverse hack)
3. Do nothing, but know you are likely vulnerable.   

If you go with option 3, don't access sensitive information from you computer unless you want to take the risk.

Season 1, Episode 5 of "The White Rabbit Project" on Netflix goes into detail about how they are able to pull this off.  It's not just you.  This is happening to banks, as well.