Table 3. Infringement of Personal data (2018-2020).

Year Case Content
2018 Google Plus: 52.5 million major privacy breaches [12] Two software vulnerabilities in Google Plus have resulted in 52.5 million major privacy breaches
2018 Marriott Hotel: Approximately 500 million customer data exposures [12] The Marriott Hotel had an accident in November 2018 in which about 500 million customer data were exposed.
2018 Facebook: Software bugs [12] Software bugs have occurred, exposing 70 million users' information
2020 A number of local authorities in Korea: Information leak of infected persons with the COVID-19 [13] Disclosure and leakage of route information of COVID-19 infected persons due to lack of awareness and error by the person in charge.
2020 Local government in jeju: Failure to comply with restrictions on processing unique identification information [14] 70,000 people's personal information is exposed because the person in charge of personal data does not enforce unique identification processing restrictions