ING provides the following general information to answer any concerns that you may have around the security of the internet, including online transactions. More specific information should be available from your bank, broker or ING representative.
ING makes every effort to provide optimal security of your data and of all transactions; for us protecting our clients is just good business. However hard we work there are risks online, and you can take some action to protect yourself.
Here we provide some information to help you: https://www.ing.com/ING.com-Security.htm#reporting_vulnerabilities