Many work at home scams are only companies looking to collect and sell your personal information or rob your credit card. No legitimate company will request any personal information or require an up-front payment of any kind before starting the job. As with all jobs, some information does need to be collected for tax purposes upon being hired. However, you should never give anyone personal information until you know the company and the job is for real. The best rule to remember is that any work at home offer that asks for money, a credit card number or personal information for no good purpose is a scam.
Finding a legitimate work at home job takes time, patience and thorough research. Always check the reputation of a company through a web search and be sure you clearly understand how and when you will be paid. Even after checking, if the company looks good but the job seems too easy, it is probably a scam. The best way to find the honest companies is through slow and steady connections. Good and honest work at home opportunities do exist. Just don't be taken in by the scams while you search for them.