Among these are errors in grammar or spelling, the absence of a personalised greeting or the sender’s address as well as a request to respond at once. You should delete suspicious e-mails from your inbox immediately. That’s because as a basic rule neither your credit card company nor the bank which issued the credit card will request sensitive information such as passwords or credit card numbers with an e-mail – not even to update this information online.

For security reasons, you should never send your credit card information in an e-mail. You should even avoid entering sensitive information in the Internet – except if you have called up the website yourself by entering the web address into the web browser by hand.