The document discusses three major types of malicious activities against organizations' information systems: hostile insider activity, theft of private data by insiders or outsiders, and large-scale denial-of-service attacks. It asks the reader to choose one type, describe a modern example for that type along with its organizational impact, and specify the countermeasures taken as well as recommend additional preventative and reactive countermeasures.

1. The three major types of malicious activities that organizations’
information systems face include:
Hostile or malicious insider activity.
Theft of private, proprietary, or sensitive data, by insiders or
external attackers.
Large scale DoS (denial-of-service) attacks.
Based on your research:
Describe a present-day example of your selected type of
malicious activity and its impact on the organization.
Specify the countermeasures the organization took to address
the malicious activity.
Recommend at least one additional preventative countermeasure
and at least one countermeasure organizations could take to
address this type of activity once it has occurred.