A leak of individual date

Oct 29, TBS radio announced that 1033 people's individual datas which was applied for talk event was drained on the internet. These datas have applicant's name, address, e-mail address, telephone number, and so on. It's because lack of attention that event company didn't lock their files. Recently, it has been increasing about draining individual datas same as this case, so we should take attention to exchange own datas on the internet.