: A signal seller is a type of Forex scam where the scammer promises to identify favorable times to buy or sell a currency pair, based on professional recommendations. These 'signals' are often sold on various platforms. While some signal sellers may be legitimate, many are fraudsters who distribute false or misleading trading advice.

These scams involve the sale of trading robots or systems that promise huge returns and can "automatically" trade on your behalf. However, these systems are often based on dubious trading strategies, and their effectiveness is usually unproven. They may initially deliver positive returns to attract more investment, but the user often ends up losing money.

Some fraudulent Forex brokers may manipulate bid/ask spreads, a crucial aspect of Forex trading, for their benefit. This manipulation leads to the trader paying more when buying a currency pair and getting less when selling, affecting the potential for profits.

Scams frequently involve unregulated brokers that don't adhere to financial regulations designed to protect traders. These brokers can make false claims about potential profits, use aggressive sales tactics, and may even refuse to process withdrawals

: Margin trading involves using borrowed money to open large Forex positions. While this can amplify profits, it can also amplify losses. Some scammers will push traders into using margin, downplaying the risks involved.

: In these scams, the returns of initial investors are paid by the funds of new investors. The scammers promise high returns with little risk, but when new investors become scarce, the scheme collapses with most participants losing their money.

In these scams, companies present themselves as being able to trade in Forex on behalf of their clients. However, they operate like a Ponzi scheme, using new clients' funds to pay older clients, or simply absconding with the funds.