Most fraudsters often use tactics to convince people without providing verifiable historical evidence. That's why we are always careful in making transactions or interactions with people we don't know.

Studying someone's background is an important step in ensuring their trustworthiness and credibility. However, in the digital age, sometimes this information is not always easy to find or verify. There are many different forms of fraud and the signs of fraud can vary depending on the situation and the type of fraud that is occurring. There are some common signs of fraud that I know of.

• Requesting personal information: Fraudsters may ask for your personal information such as credit card numbers or bank account numbers. A good person will not ask for your personal information.
• Fake or phishing websites: Fraudsters can create fake websites that mimic legitimate websites to ask for your personal information or steal your personal information.
  
• Fake investment: Fraudsters can offer fake investments that promise huge returns in a short time. However, the investment actually does not exist or does not generate the promised profit.

So, apart from these signs, it is also important to watch out for other signs of fraud and always check the legitimacy of the information received before providing personal information or making any financial transactions. If you feel something isn't right, trust your instincts. Feel free to decline the offer or stop the interaction if you feel uncomfortable.