Spanish police say DDoS suspect used a van as a mobile office

Spanish police also raided a sparse residence containing a variety of computer equipment

The man suspected of participating in a large DDoS attack on an antispam organization that caused intermittent Internet hiccups drove around Spain in a van he used as a mobile office, Spain's Interior Ministry said Sunday.

The van was equipped with "various antennas" that were used to scan frequencies, the ministry said in a news release. On Thursday, Spanish police arrested a 35-year-old Dutch man in Barcelona suspected of conducting cyberattacks against Spamhaus, a nonprofit group that develops widely used lists of networks identified as sending spam.

Spanish police published a video of a sparse residence they raided. Images showed the room was strewn with wires and computer equipment, including routers, a Mac Mini computer, laptops, an antennae and a single cot with the book "Quicksilver" by Neal Stephenson on it. Also shown were several rubber stamps, two of which were emblazoned "NATO secret" and "NATO unclassified."

The man has been identified by an official close to the investigation as Sven Kamphuis, who has denied involvement. Dutch authorities only identified the suspect by the initials "S.K." for privacy reasons. Kamphuis has said he believes the attacks originated with members of Stophaus, a group aiming to shutdown Spamhaus for its antispam work.

The DDoS attack was estimated to peak at more than 300Gbps, making it one of the largest attacks on record, but computer security experts disagreed somewhat over its broader effect on the Internet. The attack caused problems for some European Internet exchanges nodes, or places where ISPs link to transfer traffic to one another.

The Interior Ministry, which did not name the suspect, said they seized two laptops and documents from the residence. At the time of his arrest, the man, from Alkmaar, Netherlands, claimed to be the minister of telecommunications and foreign affairs of the Republic of CyberBunker, Spanish police said.

CyberBunker.com is a hosting provider based in a former military facility in the Netherlands. It specializes in so-called "bulletproof" hosting, or one that resists law enforcement efforts to remove certain content from the Internet. It claims it has no involvement in spam and does not allow SMTP traffic, the protocol used to send email.

Kamphuis runs a network provider called CB3ROB, which provided services for CyberBunker. CB3ROB had been blacklisted by Spamhaus for activity related to spamming botnets and extortion scams.

Send news tips and comments to jeremy_kirk@idg.com. Follow me on Twitter: @jeremy_kirk

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