Use updated anti-virus and anti-spyware software, only download information from trusted sites. Never provide sensitive information, such as credit card or bank account numbers, passwords, driver’s license, or Social Security number. Track account activity and report any suspicious or unauthorized charges to the financial institution or card issuer. Be wary of “free trial” offers and be wary of pre-checked boxes in online offers before submitting an order. Use strong, random passwords and change them regularly.
Source: https://thehackernews.com/2010/12/make-sure-that-your-cyber-space-is.html