Nigerian scams involve someone overseas offering you a share in a large sum of money or a payment on the condition you help them to transfer money out of their country.
While these scams originated in Nigeria, they now come from all over the world.
The scammer will contact you out of the blue by email, letter, text message or through social media.
The scammer will tell you an elaborate story about large amounts of their money trapped in banks during events such as civil wars or coups, often in countries currently in the news.
Or they may tell you about a large inheritance that is 'difficult to access' because of government restrictions or taxes in their country.
These fees may even start out as quite small amounts.
If paid, the scammer may make up new fees that require payment before you can receive your reward.
They will keep asking for more money as long as you are willing to part with it.
You will never be sent the money that was promised.
If you think you have provided your account details, passport, tax file number, licence, Medicare or other personal identification details to a scammer, contact your bank, financial institution, or other relevant agencies immediately.