1. Fake exchange:
Some exchanges are also ghost exchanges, they will resemble the domain name of reputed exchanges, such exchanges are taken down, but some people might have been scammed before taken it down, we should visit the correct exchange link.
2. Ponzi scheme
This is also one of the ways fake exchange scammers have deployed to scam people but also beyond fake exchanges to cloud mining and other forms of HYIP.
3. Scam coins
Over 12000 coins listed on Coinmarketcap while there are many more, but the marketcap of number 2000 and above are not encouraging while some will significantly dump to of no value, this is one of the potential means people lost a lot of money.
6. Phishing: phishing is another method used to defraud people of their money. They may send you an email and attach a website link to the email, instructing you to click the link, login, and fill out a form in which they will ask for sensitive information such as your username, password, and other sensitive information.
The commonest information demanded for is seed phrase, while many people are scammed like this. Seed phrase, passphrase, private keys should not be given to anyone but remain known to only you and you.
Phishing can also still be through website links, text messages and calls.
The email can even contain a link to a site to download malware, malware can monitor devices, reveal 2fa codes, uses computers to mine like cryptojacking malware that mines monero. Malware can be used to steal bitcoin and other crypto on users devices, malware can be used to controls someone device. Ransomware can even override your computer in a way hackers will demand for ransom, if important information is on your computer, you will have no option unless backup elsewhere.
8: Fake Applications
The best is to download the app in the original site or the original site will direct you to app store. To make use of app store, make sure the app have over 500000 to 1 million downloads or more. Apps having 1000 downloads with good reveals on app stores are fake.
Ad scam, if not the most common: very common now, even google do not mind to receive money from scammers to place scam ad links on top of google sserach, possibly what people will first see after they search will be scam ad links.
Telegram scam, very important to mention, different type of telegram scam, like ICOs and airdrops scam on telegram, also impersonation scam on telegram and many more, people needs to be careful of telegram. Also other social media scams and even YouTube scams.
Pump and dump, pumping new coin to encourage others and later dumping it.
Avoiding sharing of personal information
Avoiding too real to be true offers
Avoid free giveaways (airdrops) many are scammed while some will collect personal information like emails which can be used in phishing attacks.