Fake startups like exchanges or investment banks - This is a scam at the intersection of real business and crypto could be found at Scam bot reviews. Usually a startup is announced, usually IT, such as a dating site or mail service, or an aggregator of something, and funds for its development are raised through cryptocurrency. Investors are promised mountains of gold, a percentage of future profits. In reality, the development of the project initially no one is going to engage, after some time, the project dies, and all the crypto "spent on the development, but it did not work. Projects that failed, went bankrupt, and lost a lot of capitalization are also called scams in the cryptocurrency community. In reality, it is often difficult to understand or prove whether the organizers originally intended the project to go bankrupt. For example, the likelihood of initial malicious intent on the part of Terra project organizers in the recent collapse of the UST algorithm steblecoin and LUNA cryptocurrency is unlikely. The collapse occurred because of a targeted attack, taking advantage of the right phase of the market and the vulnerability of the UST algorithm. Administrators at the moment tried to save the project and even sold off all bitcoins from their $3 billion reserve in an attempt to stabilize the situation. The moral and ethical aspect in such situations is, as always, very thin. But many participants and experts of the crypto community agree that even if there was no initial malicious intent, but erroneous and inept actions of the project administration led to loss of money by investors and participants, such administration also deserves censure and punishment on a par with fraudsters.