My blockchain wallet was hacked once, and all my BTC (which I collected from the event) was sent to another wallet belonging to that da*n hacker. I think the hacker started by hacking my email, somehow he could access my email, even though I already added 2fa. I know maybe I am careless, at first I was suspicious why I often get lots of notifications about airdrops, so I ignored it and all the incoming message notifications, maybe that's what hackers used to disguise email notification access from other devices.

It was truly a very rewarding, though painful experience. Since then I have been very cautious in this ecosystem, choosing a more secure wallet and managing primary and secondary e-mails. hopefully, this can be a lesson for others too, by separating the main email and the second email for other needs.