Scams involving car sales are among the most frequently reported in the state, according to NSW Fair Trading's Carleen McConnell.
People are being cheated of thousands of dollars through sites such as Gumtree or Facebook Marketplace, by agreeing to transfer a deposit ahead of picking up the keys.
Mrs McConnell said it's cheaper to take the day off work to hand over cash in person, rather than running the risk of trusting the seller.
Never give out personal details. Never do the car dealing online. Always check you're using a secure site and don't give people access to your personal computerCarleen McConnell
The advice was delivered during the NSW Regional Technology Expo at the Orange Function Centre on Wednesday.
Mrs McConnell warned the audience to avoid participating in competitions on Facebook because "Mark Zuckerberg does not want to give you his money" and to check the address emails came from to detect if they were from a safe source.
"Never give out personal details. Never do the car dealing online. Always check you're using a secure site and don't give people access to your personal computer," she said.
Mrs McConnell said while door-to-door scammers tended to target seniors, phone scammers were indiscriminate.
She said people have been emailed fake utility bills which ask them to fill in missing personal information, people have booked accommodation on fake Airbnb sites and people have handed over credit card information after fake emails have informed them they're due to receive an international inheritance.
Mrs McConnell said to look out for spelling and grammatical errors in emails, look for the locked padlock at the start of a website address to indicate it is secure and be wary if something sounds too good to be true.
Mrs McConnell suggested using PayPal to purchase things online and a credit card if PayPal was not an option.
'Scams, Don't Get Caught - what you need to know' will run again on Thursday from 1.30pm-2.15pm at the Orange Function Centre.
Organiser Graeme Fleming said people did not need to book for the daytime sessions.
Other public sessions include information about how you can update your technology skills and what technology is available at the local library. The expo will also feature school group sessions and trade exhibits.
It is being run by the Orange Daybreak Rotary Club with support from Orange City Council.
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