There's a story that keeps being brought up in the crypto community, and every time I hear it, I feel a bit breathless. Stefan Thomas, a German programmer who once served as CTO at Ripple, was rewarded with 7,002 bitcoins in 2011 for creating an educational video about Bitcoin. At that time, Bitcoin was only a few dollars each, and no one could have imagined how much those coins would be worth later.

The problem now is that Stefan Thomas stored the private keys to these BTC on an encrypted hard drive called IronKey. This type of hard drive has a setting: it only allows 10 password attempts. After 10 failed tries, it becomes permanently locked, with no way to unlock it. What’s even more heartbreaking is that Stefan Thomas has already used up 8 of those attempts, all unsuccessfully. The remaining 2 attempts are like the Sword of Damocles hanging over his head.

This case has caused a huge reaction in the global crypto community, not because the story itself is so dramatic, but because it perfectly illustrates the cruelest side of the crypto world: how much assets you have doesn’t really matter; what matters is whether you can access them. Without the key, there are no assets—no matter how much money you have, it’s all an illusion.

I’ve always thought Stefan Thomas’s story is the best kind of textbook. It’s not just about one person’s misfortune, but also a deeper reflection of the essence of digital asset management—self-custody means self-responsibility. There are no banks, no customer service, and no “forgot password” button.

That’s why I get nervous when I see many people still using simple passwords, storing private keys in the cloud, or having no backup plan at all. Stefan Thomas’s story reminds us that in this field, a small mistake can be a permanent loss. Security isn’t optional; it’s a mandatory course.