Assertion: virus | /r/HasProperty | driven by resultant increase
Facets:
value: in bulletin board system
type: LOCATION
value: in modem use
type: OTHER
value: in software sharing
type: OTHER
Source sentences:
text: Traditional computer viruses emerged in the 1980s, driven by the spread of personal computers and the resultant increase in bulletin board system (BBS), modem use, and software sharing.