Originally from France, but now living in Tunisia & possibly working for the U.K.; there are at least 2 people claiming this alias.
There is also a "closed" facebook group by this alias: https://www.facebook.com/groups/196087577223385/?ref=br_rs
Group facebook page: https://www.facebook.com/TunisianHackers2
Current Leader at Tunisian_Hàckers II (what happened to the 1st one?)
Him & his team are primarily known for XSS & SQLi. They get a lot of media coverage for leaking the info they get access to.
They are participating in #opisrael reloaded, #opusa, & have participated in past ops.
He might have previously owned these domains:
http://X-hàckTN.com
http://hackerpirat.com
http://sqlchiffres.com
http://méthodes.com
Here is an example of his website defacement:
http://www.hack-db.com/mirror_560027.html
Here is an example of his dumped infoz from someone random website they used sqli on:
http://www.techworm.in/2013/07/user-login-payment-details-of-sidetick.html