I just saw many people asking what scam means and what forms of fraud exist in crypto. Actually, this is a very important topic that everyone should know when participating in this market.

A scam is basically a fraudulent act to steal assets or personal information. In the crypto space, scammers use increasingly sophisticated tricks. According to Chainalysis, although the damages from scams in 2023 decreased by 65% compared to the previous year, they still amount to billions of USD. So, you need to understand what scam means to protect yourself.

There are many types of scams I have witnessed. Phishing scam is one of the most common methods - scammers impersonate emails, websites, or messages from reputable services to steal your account information. Next is pump and dump scam, where some individuals manipulate token prices, create FOMO waves, then sell off at high prices, leaving investors with worthless tokens.

OTC scam or P2P scam are also very common - malicious actors request payment upfront and then disappear or send the wrong amount. There are cases where scammers impersonate celebrities or admins to lure you into investing in "fake" projects. I also see many fake apps or websites impersonating reputable wallets - for example, fake Ledger apps on the Microsoft Store.

Additionally, there is the Ponzi scheme model - promising huge profits but actually using new investors’ money to pay old investors. Exit scam is when the development team suddenly withdraws all liquidity and disappears. Rug pull is similar - simply abandoning the project after taking the funds.

I learned how to recognize scams from real cases. If a project promises unrealistically high profits without a solid basis, that’s the first red flag. Projects lacking clear information about the team, business model, or investors are also risky. When you see a project only focuses on advertising without a real product, be cautious. Projects that haven’t undergone independent security audits are also high risk.

If you search for information about a project and see mostly negative feedback from the community, or if the project uses a domain name and logo identical to a major project, those are red flags. Be cautious with unfamiliar links, especially from unknown sources.

My way to avoid scams is to always do thorough research before investing. Read the whitepaper, learn about the team, check the official website. I never share private keys or seed phrases with anyone. When evaluating a project, I use CoinMarketCap, CoinGecko, or scam alert sites like ScamAdviser, CryptoScamDB.

A good habit is to revoke permissions after interacting with DApps, even reputable ones. I also enable anti-phishing codes and 2FA on exchanges. Additionally, avoid using wallets without clear sources, always update software to the latest version, and don’t let emotions influence your investment decisions.

There are some famous scams I still remember. Confio in 2017 raised $375,000 via ICO and then suddenly disappeared - the token dropped from $0.6 to $0.1 within less than two hours. Centra raised $32 million with backing from celebrities, but the founders were arrested in April 2018. Bitconnect used a multi-level marketing model and operated for a year with a market cap of up to $2 billion before collapsing - the token price fell from $320 to $6 in less than 24 hours.

Recently, I saw the Discord account of LayerZero’s CEO was hacked, and scammers shared phishing links titled "receive ZRO tokens," making many believe an airdrop was starting. Fake websites also run ads on Google to trick users into visiting them.

DNS hacks are also a threat - redirecting traffic from legitimate websites to scam sites. Even accessing via bookmarks can still lead to scams.

But don’t worry too much. As long as you understand what scam means, how to recognize and avoid it, you are mostly safe. When in doubt, seek information from trusted sources or ask the community. Vigilance and thorough research are key to protecting your assets in this field.