[2] In 1993, a number of people surrounding Hack-Tic including Gonggrijp founded XS4ALL, the first ISP that offered access to the Internet for private individuals in the Netherlands.

[citation needed] After he left XS4ALL, Gonggrijp founded ITSX, a computer security evaluation company, which was bought by Madison Gurkha in 2006.

Throughout the years, he has repeatedly shown his concerns about the increasing amount of information on individuals that government agencies and companies have access to.

[citation needed] Rop held a talk titled "We lost the war"[4] at the Chaos Communication Congress 2005 in Berlin together with Frank Rieger.

[7] Gonggrijp has worked for WikiLeaks, helping prepare the Collateral Murder April 2010 release of video footage from a Baghdad airstrike[8][9][10] that killed civilians, including two Reuters journalists.