A western suburbs real estate agency has had its computer system hacked by scammers preying on house hunters via bogus advertisements on major websites.

The scammers gained access to the agency's logins for sites including realestate.com.au, Domain, REIWA, The Home Page, Million Dollar Listings, On the House, Activepipe, homely.com.au, MovingUp and rent.com.au, Consumer Protection WA warned.

Acting Commissioner for Consumer Protection David Hillyard said the ads featured properties from around Australia.

"The ads feature very attractive properties at equally attractive rents, so we fear that many prospective tenants have already responded to the ads and have communicated or are currently communicating with the scammers via the rentscall@gmail.com email address," he said.