All my BTC were stolen from QT desktop wallet by this individual

[lostcoins69]

It's a bit of a stretch but here is what I came up with:

Tazja is known as tazbox on a hackers forum (http://jomgegar.com/)
16th post in this topic shows tazbox probably is up to no good/linked to bitcoin (http://jomgegar.com/topic/2801-question-about-bitcoin/?hl=tazbox)

Then if we look a bit further we find this topic about tazja being a hacker: https://bitcointalk.org/index.php?topic=543660.0
If you look at post 18, you see a post of bitdonkey. He stated he also got hacked by tazja.
If we look up bitdonkey's post we see this post about him purchasing a VPS host: https://bitcointalk.org/index.php?topic=342443.msg5598973#msg5598973

Domain is tazbox. As stated previously, that is the username of Tazja. So either bitdonkey is tazja, or he wanted to make a website dedicated to his own hacker?

The extension of the domainname is not stated, but let's assume it's .fr, as he is french. Then we come up with:
contact:     Dubas Julien
address:     18, place de la mairie
address:     07200 Aubenas
country:     FR
phone:       +33 7 53 76 03 40
e-mail:      taznact@gmail.com
Possible second email: taznact@yahoo.com

And what if we search for taznact? Then this comes up as first result:
Antivirus scan for ... - VirusTotal
https://www.virustotal.com/latest-report.html?resource...
SHA256: 6debde863fce2217b8e7e8a58dd948f00c441eb15d5cba30a5a7103d469e07b8. File name: Taznact.exe. Detection ratio: 24 / 47. Analysis date ...

So the domainname tazbox.fr is now linked to not only sha256, but also to a file with the name taznact.exe (same as his email) which most likely contains a virus.

And the virus made you lose your bitcoin.
By the way, he seems to spread his virus through NZB (download website).
Look at his uploaded files: http://www.nzbking.com/poster/Taznact@yahoo.com%20(Taznact)/

Hope this helps!

If you manage to get your btc back, this is my address for a donation:
btc:1AHkjqevi3DcebECujHFAbJjLad58Dqt6A

Great sleuthing.  I imagined he was french (as another victim described him( and yes the NZB file reminds me of something i downloaded on usenet that was supposed to be a movie file and instead ended up being an executable that i clicked on, but then nothing seemed to happen.  I will follow up on this.  Much appreciated and will keep you in mind for compensation.

[notlist3d]

Everyone really should look into a wallet or wallet service with good reviews and multi-factor authentication.  If you have a unencrypted wallet file on your computer it's just trouble waiting to happen. 

I am sorry for your loss, I hope others read this and use multi-authenticaiton and encryption.

[Aditya]

Did you encrypt your wallet with password?

Next time don't use Windows. Use Mac OS X or GNU/Linux. If you store large amount of bitcoin, you may use cold storage / paper wallet.

Was you using windows without an outbound firewall? (Windows firewall does not block Outbound connections and any undetected key-logger would send everything to the hacker without you even knowing)

the wallet had passphrase encryption.  Not sure about the firewall.  Kasperski and AVG were on and nether triggered.   ran Malwarebytes.org scan and it did flag a bunch of stuff that the AV programs missed.  Certainly learned a lesson about importance of paper wallets.   

this character has posted to this community in the past.  I am hopeful moderators can DOXX him and hopefully together we can shame/coerce the guy to return the coins.

Everyone learned from mistake. I also learned a lesson not to store my bitcoin on exchange even if it has big name. I lost significant bitcoin on Mt Gox.

Many malware are targeting Bitcoin wallet now. Windows system especially Windows XP and older are not supported by Microsoft anymore. This system are vulnerable to malware. Don't use it for important task (bitcoin wallet, online transaction, server)

[Cryptogirl82]

Don't know the service section part, but I will send two BTC for the safe return of the stolen coins to the 1HUJt.... address

Why would you send the coins back to that address when you already know it's compromised

my thoughts exactly, anyway I would go into cold storage. Is definatly safe from hackers. Some how many BTC did you lose?

[Suharto]

Windows is actually the worst choice of OS for security, especially if you do not have Anti Virus. Next time, move a portion of your coins to cold storage so it cannot be stolen.

[ajareselde]

Windows is actually the worst choice of OS for security, especially if you do not have Anti Virus. Next time, move a portion of your coins to cold storage so it cannot be stolen.

what if i told you i run win7 on a comp with about 30 different wallets; no antivirus, no firewall, no nothing.
last time i did a reinstall was 2.5 years ago, and was never infected.
all it takes is common sence, and u will never pick up infection (unless there realy is a zero-day exploit lol)

[CEG5952]

Windows is actually the worst choice of OS for security, especially if you do not have Anti Virus. Next time, move a portion of your coins to cold storage so it cannot be stolen.

what if i told you i run win7 on a comp with about 30 different wallets; no antivirus, no firewall, no nothing.
last time i did a reinstall was 2.5 years ago, and was never infected.
all it takes is common sence, and u will never pick up infection (unless there realy is a zero-day exploit lol)

For the most part, yes, all it takes is common sense. But every once in a while, even the most sensible people can make a lapse in judgment.

[Silvercube146]

Windows is actually the worst choice of OS for security, especially if you do not have Anti Virus. Next time, move a portion of your coins to cold storage so it cannot be stolen.

what if i told you i run win7 on a comp with about 30 different wallets; no antivirus, no firewall, no nothing.
last time i did a reinstall was 2.5 years ago, and was never infected.
all it takes is common sence, and u will never pick up infection (unless there realy is a zero-day exploit lol)

For the most part, yes, all it takes is common sense. But every once in a while, even the most sensible people can make a lapse in judgment.

This is very true. Its important to keep a watchful eye at all times and not to get complacent

[lostcoins69]

Don't know the service section part, but I will send two BTC for the safe return of the stolen coins to the 1HUJt.... address

Why would you send the coins back to that address when you already know it's compromised

my thoughts exactly, anyway I would go into cold storage. Is definatly safe from hackers. Some how many BTC did you lose?

11.76. Well over $7k worth

[rdewilde]

Is this guy still active?