Your personal information has monetary value, so look after it the same way you look after your cash or your credit card. You don't give your credit card to someone else, so don't give your personal information unless you are sure you know who is asking for it.
Personal information can be used to commit a crime: the purpose of the fraud is to steal personal data and use it in e-mails or web services. Phishing passwords, ID's and telephone numbers is also used to receive financial gain.
With your personal information a hoaxer can:
Data is also used for spamming, money laundering and other financial crime.
There are different methods for fraud and they are developing fast. For instance, profile fraud creates a new profile with the stolen identity so that those who recognise the profile are tempted to click on harmful links. There will be attempts to spread these links, for instance in other users' blogs. These could be, for instance, viruses or phishing for personal information.
Inform your own bank or credit card company about ID-information fraud on your credit card. Credit card companies and banks have blocking services which you can phone and they can void the ID's and prevent them from being used. If you have lost your driving licence, passport or some other proof of identity, inform your own bank about it as well as the police.
If you suspect that your personal information has got into wrong hands, make a report for the administrators on the website which has been wrongly used. Change your ID's and passwords.
You can notify the Office of the Data Protection Ombudsman of the misuse of personal information or other data protection infringements. Data Protection Ombudsman
If you believe you have been the victim of a crime, you can contact the local police. Police