Wikipedia
Küberkaitseliit
The National Cyber Defense League (, or KKL) is a group of units within certain malevs of the Estonian Defense League established in 2010. Created out of inspiration from the 2007 cyberattacks on Estonia and spearheaded by Informatics Scientist Ülo Jaaksoo, it focuses on the defense of the Estonian state and private telecommunications infrastructure from outside-derived cyberattacks, and mostly employs the volunteer participation of IT professionals.
The KKL is headquartered on the grounds of the Tartu and Tallinn malevs, and it is jointly headed in Tallinn by Jaan Priisalu and in Tartu by Kuido Külm.