Sven Olaf Kamphuis, 39, was arrested in April 2013 by Spanish authorities in Barcelona based on a European arrest warrant for launching massive distributed denial of service (DDoS) attack against Spamhaus that peaked at over 300 Gbps.
Spamhaus is a non-profit group based in Geneva and London that tracks spam and cyber-related threats, creates blacklists of those sites and then sells them to Internet Service Providers.
