Email Bombing, a kind of denial-of-service (DoS) attack is crippling internet users and is on
the rise recently. A particularly notorious type is the Subscription Bombing attack, where a
victim user's inbox is bombarded with a stream of subscription emails at a particular period.
This kind of attack helps the perpetrator to hide their real motive in lieu of a barrage of
legitimate-looking emails. The main challenge for detecting subscription bombing attacks is
that most of the attacking email appears to be legitimate and benign and thus can bypass …