1. A computer system comprising the following: one or more processors; system memory; and one or more computer-readable storage media having stored thereon computer-executable instructions that, when executed by the one or more processors, causes the computing system to perform a method for determining a risk of encountering malware based on social context, the method comprising: receiving a malware notification associated with a user, the malware notification identifying at least one type of malware encountered by the user, the malware being a computer malware that is capable of infecting a computing system; determining one or more traits of the identified type of malware; identifying one or more persons that are part of a social group associated with the user; determining a likelihood that the malware may infect or has infected the identified one or more persons, the determining being based on the traits of the identified type of malware; and determining whether at least one of the identified persons associated with the user has an increased likelihood of encountering the identified type of malware based at least on information derived from the identifying.