Are there really backdoors in smart contracts? Yes, there are, but the meaning of "backdoor" might be different from what you think.

It's not just some hidden malicious code; rather, it's centralized control privileges deliberately retained by developers. For example, project teams can freeze funds at any time, modify rules, or even run away with the money. That's why security audits are so important—they theoretically help you identify these risks.

But what is the reality? Most people don't actually read the audit reports, and some don't even know where to find them. They lack technical background, are blinded by promises of high returns, and are driven by FOMO. How do they make decisions in the end? Relying on "community hype," recommendations from a big influencer, or simply whether the project team has enough fame.

The most painful part is this "selective trust"—knowing in their hearts that backdoors could exist in theory, but still thinking, "This star project is definitely fine, projects listed on top-tier exchanges should be safe."

The lesson learned boils down to two words: stay away from projects that promise excessive returns, and avoid obvious air coins. Do more research, and have less luck-based thinking.