Please answer the following question: What key details about denis perisa can be extracted from the following bio? Bio: denis perisa -lrb- born july 23 , 1983 -rrb- is a political activist , whistle blower and computer hacker from Sibenik , croatia . he was convicted and criminally charged in september 1999 . he was forbidden to use computer systems or internet for hacking e-mail of politician veselin pejnovic and planting backdoor to his network . he founded the computer security website jezgra.org in 1997 that is still active today . founder of Si-wifi wireless organization for his town in late 2005 . later in his life he became politically involved and was accused but never proven that he was working with local police and croatian democratic union -lrb- hdz -rrb- . denis is also a dj , a photographer and recently a writer writing book called '' my first suicide '' .
A:
- relatives is tina perisa -lrb- sister -rrb-- known for is hactivism- birth name is denis perisa- callsign is darkman- birth date is 23 july 1983- name is denis perisa- movement is anonymous- nationality is croatian- image is file : denis perisa.jpg- birth place is Sibenik