Ensure you are dealing with legitimate organizations.
Contact these organizations on your own.
Go to their Web site rather than clicking on a link in an email sent to you.
Remember that legitimate organizations will not aggressively approach people for money and donations.
Be mindful of groups reporting to be affiliated with legitimate organizations asking for donations or requesting you to visit their Web site.
They may be fraudulent or hosting malicious code designed to steal personal financial information.
Be wary of online auctions that claim to support the donation effort.
Report suspicious Internet sites and emails to the government and for additional protection tips visit the Internet Crime Complaint Center at http://www.IC3.gov or the Federal government's consumer information center at www.consumer.gov/Tech.htm .