Sophos Security Threat Report, Q1 2008 http://www.sophos.com/sophos/docs/eng/marketing_material/sophos-threat-report-Q108.pdf One new infected webpage found every five seconds, reveals latest Sophos ( 21 April 2008 ) http://www.vnunet.com/vnunet/news/2214843/malware-infected-site-found 汚染を食い止める国境はない 犯罪が増加