2021-10-18 Sinclair Broadcast Group, LLC Cybersecurity Incident

Page last updated on April 11, 2024

Sinclair Broadcast Group, LLC initially disclosed a cybersecurity incident in an SEC 8-K filing on 2021-10-18 07:17:34 EDT.

Incident Details

Material: Unknown
Is Breach: Unknown
Records Compromised: Unknown
Data Types Impacted: No Data Types Tracked (yet)

Compromised Date:
Detected Date:
Disclosure Date: 2021-10-18
Contained Date:
Recovered Date:

Attack Goal: Unknown

Costs: No Costs Tracked (yet)


8-K filed on 2021-10-18

Sinclair Broadcast Group, LLC filed an 8-K at 2021-10-18 07:17:34 EDT
Accession Number: 0001193125-21-300540

Item 7.01 Regulation FD Disclosure.

On October 18, 2021, Sinclair Broadcast Group, Inc. issued a press release disclosing a cybersecurity incident. A copy of the press release is attached hereto as Exhibit 99.1. This press release is furnished under this Item 7.01 of this Current Report on Form 8-K and shall not be deemed filed with the Securities and Exchange Commission for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

Exhibit No. 99.1

Press Release dated October 18, 2021

Company Information

NameSinclair Broadcast Group, LLC
SIC DescriptionTelevision Broadcasting Stations
CategoryLarge accelerated filer
Fiscal Year EndDecember 30