Cybersecurity is a sprawling topic that includes national, international, government, and private industry dimensions. More than 40 bills and resolutions with provisions related to cybersecurity have been introduced in the first session of the 112th Congress, including several proposing revisions to current laws. In the 111th Congress, the total was more than 60. Several of those bills received committee or floor action, but none have become law. In fact, no comprehensive cybersecurity legislation has been enacted since 2002. This report provides links to cybersecurity hearings and legislation under consideration in the 112th Congress, as well as executive orders and presidential directives, data and statistics, glossaries, and authoritative reports. Cybersecurity vulnerabilities challenge governments, businesses, and individuals worldwide. Attacks have been initiated by individuals, as well as countries. Targets have included government networks, military defenses, companies, or political organizations, depending upon whether the attacker was seeking military intelligence, conducting diplomatic or industrial espionage, or intimidating political activists. In addition, national borders mean little or nothing to cyberattackers, and attributing an attack to a specific location can be difficult, which also makes a response problematic. Congress has been actively involved in cybersecurity issues, holding hearings every year since 2001. There is no shortage of data on this topic: government agencies, academic institutions, think tanks, security consultants, and trade associations have issued hundreds of reports, studies, analyses, and statistics.