Line is getting more and more popular in recent years. Lots of peope use Line, so do "Suspects". That's why we have to keep an eye on it if any new features added. I just browse Line Engineers' Blog(http://developers.linecorp.com/blog/?p=3660) and find a interesting news - "Line 5.3 add new features - "True Delete" ".

They claim that the purpose is to protect privacy. I can't agree more, but what about mobile forensics... Self-deconstruct and encryption has been a very big challenge to forensic guys.."True Delete" is even worse...UFED/XRY used to recover Line deleted messages well, but now I can't imagine how difficult it will be.