1. Don’t Panic. Identify any unauthorized withdrawals.
Think about what personal information may be at risk and contact the concerned authorities to report the fraud as soon as you find out.
Verify with your bank, online payment institutions (Paypal for example) and CC provider to check no unauthorized withdrawal has been made. If any such transactions are identified contact your bank and other financial institutions to freeze your accounts. In any case, make sure you change your PIN numbers and secure codes.
2. Change all your passwords in all websites and/or applications.
Ensure you change your passwords for all online accounts. Use a password that is long, strong and unique, with a combination of upper and lowercase alphabets, numbers and symbols.
Don’t use information that could be easily linked to you (such as name, date of birth, family member names, phone numbers, the names of pets or hobbies, etc.).
3. Clean up your machine!
Make sure you scan your devices with antivirus software to detect any malicious content. Update the security software, web browser, 3rd party software (like Java and Adobe) and operating system to protect against viruses, malware, and other online threats and automate updates if the option is available. Format if necessary, advised in case of rootkits.