Download and implement 2 important security patches (SUPEE-5344 and SUPEE-1533) from the Magento Community Edition download page (https://www.magentocommerce.com/products/downloads/magento/).  If you have not done so already, download and install 2 previously-released patches that prevent an attacker from remotely executing code on Magento software.  These issues affect all versions of Magento Community Edition.  A press release from Check Point Software Technologies in the coming days will make one of these issues widely known, possibly alerting hackers who may try to exploit it.  Ensure the patches are in place as a preventative measure before the issue is publicized.