Discover how crypto malware operates through cryptojacking and ransomware, with real-world examples such as WannaMine and PowerGhost ...

Editor's Note: APYs listed in this article are up-to-date as of the time of publication. They may fluctuate (up or down) as the Fed rate changes. CNBC Select will update as changes are made public.

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. The Expedited Funds Availability Act (EFAA) defines banking deposit hold periods and ...