IT security is a key concern for companies and their CPAs. Corporate data are still at risk to security breaches, despite measures put in place, because of reasons including the proliferation of mobile devices, inadequate security policies and cyberattacks. Companies need to start with a comprehensive risk assessment to spot potential vulnerabilities, then craft appropriate policies. The AICPA IMTA Section is presenting a webcast, "Cyber Security: You've Been Breached Now What," from 3 to 5 p.m. ET today.