The humanitarian crisis caused by Russia's invasion of Ukraine has prompted an outpouring of support from around the world. Predictably, some have sought to take advantage of the generosity of others. The following advice applies not just to the Ukrainian situation, but to any charitable donations. Never click on links or attachments in suspicious e-mails or respond to unsolicited messages asking for personal or financial information. To donate online, type in the address of the charity website, rather than clicking on a link. The most efficient way to support those in need is to donate to established charities with a proven track record. If you want to donate, but aren't sure where, sites such as Charity Watch and Charity Navigator provide detailed information on a long list of charities.