SpinNet, The leading Internet Service Provider in Japan, has been compromised and Executes malicious scripts, detected by Comodo's Site Inspector.
'home.att.ne.jp' contains iframe pointing to the malicious domain 'competechart.ru' which redirects to another sites.
Earlier today, 'hxxp://competechart.ru/in.cgi?16' redirects to malicious domain which hosts black Hole Exploit kit. At the time of writing, 'competechart.ru' redirects to bing.com.
UrlQuery detected competechart.ru url as SutraTDS , a Traffic Distribution Systems(TDS) package. There are some other sites also infected by this iframe. A simple google search reveals the list of infected sites.
There are more malware domains that follows same method like competechart.ru, the list can be found at Sucuri Malware Labs .