What Problems Are Faced Regarding The Security Of E-commerce?

The main risk factors affecting e commerce are the safe use of credit cards on the net and also the safe storage and usage of sensitive data on the web, to prevent identity theft  (Names addresses and the like)
Secondly the protection of passwords which are vulnerable to hackers and phishing.
Some people reluctant to use credit cards have used e currency, which has now become an industry on its own, and now e currencies are traded. However, companies like Pay Pal and e Gold are not without their limitations and inherent risks.
Another company to come under attack recently was E bay, and people have become more cautious.
However using plastic anywhere can have its risks. Restaurant cashiers can and have, used card numbers for transactions after the customer has left, as have major chains and stores.
The answer is to be vigilant. Never give out your card details unless on a secure site, and do not respond to random requests for your details.