If you have not done so already, download and install 2 previously-released security patches (SUPEE-5344 and SUPEE-1533) from the Magento Community Edition download page (https://www.magentocommerce.com/products/downloads/magento/).  These security issues affect all versions of Magento Community Edition and enable an attacker to remotely execute code on Magento software. A press release from Check Point Software Technologies tomorrow  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.