First, the status of spam and phishing emails to docomo emails was reported.
NTT DOCOMO is looking for information on spam from users.About 96 % were spam and 3 % was fishing.
ユーザーからの迷惑メールの情報As for the status and characteristics of spam emails to DoCoMo Mail, more than 90 % of the SPF (Sender Policy Framework) pass the domain authentication, which cannot be prevented by sending domain authentication.It was said that it was relatively useful to stop things from the same base because of 60 %.
ドコモメールへのスパムメールの現状と特徴On the other hand, Housing Mail is an urgent problem because of its low ratio, but has a high threat.
As a pattern of fishing emails to docomo mail, in addition to docomo -worn emails, he deceived the industry such as "I got ○○ million yen", as well as banks, credit cards, and EC site transportation.He explained that there are things, especially in the last pattern, it may be difficult to judge whether it is genuine.
As for the tendency of phishing emails, the type of mobile carrier and banking is often spoofed by domain names, so the percentage of Pass of domain authentication by SPF is reduced compared to spam mail.However, the type of winning fraud says, "Because there are few serious spoofing, domain authentication is high in Passing."
ドコモメールへのフィッシングメールの現状と特徴In addition, he said that a highly recognized company in Japan is a characteristic of fishing emails to mobile carrier emails, and that it tends to be global and hard to get a spam filler.
携帯キャリアメール宛のフィッシングメールの特徴As a summary of the current status of fishing emails, as a way of thinking that smartphones do not suffer phishing, the Japan Data Communications Association "Do not open suspicious emails," "do not access suspicious URLs", "Easy to provide ID/password".I would like to introduce three items.