Thecontroversial Race to Zerocontest, runbyNew ZealandsecurityresearcherSimonHoward, allowedeachteam to try to obfuscate real computervirusesandexploitcodesamples.
HowardSimon, assistant director of public affairs for the Partnership for a Drug-Free America, said he believes the long-running ad campaign got the message across.
Lib Dem president Simon Hughes branded Mr Howard "arrogant and wrong" for claiming the Tories were the "natural party" for Britain's ethnic minorities.