• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

OneClik APT campaign targets energy sector with stealthy backdoors

 | 

APT42 impersonates cyber professionals to phish Israeli academics and journalists

 | 

Kai West, aka IntelBroker, indicted for cyberattacks causing $25M in damages

 | 

Cisco fixed critical ISE flaws allowing Root-level remote code execution

 | 

U.S. CISA adds AMI MegaRAC SPx, D-Link DIR-859 routers, and Fortinet FortiOS flaws to its Known Exploited Vulnerabilities catalog

 | 

CitrixBleed 2: The nightmare that echoes the 'CitrixBleed' flaw in Citrix NetScaler devices

 | 

Hackers deploy fake SonicWall VPN App to steal corporate credentials

 | 

Mainline Health Systems data breach impacted over 100,000 individuals

 | 

Disrupting the operations of cryptocurrency mining botnets

 | 

Prometei botnet activity has surged since March 2025

 | 

The U.S. House banned WhatsApp on government devices due to security concerns

 | 

Russia-linked APT28 use Signal chats to target Ukraine official with malware

 | 

China-linked APT Salt Typhoon targets Canadian Telecom companies

 | 

U.S. warns of incoming cyber threats following Iran airstrikes

 | 

McLaren Health Care data breach impacted over 743,000 people

 | 

American steel giant Nucor confirms data breach in May attack

 | 

The financial impact of Marks & Spencer and Co-op cyberattacks could reach £440M

 | 

Iran-Linked Threat Actors Cyber Fattah Leak Visitors and Athletes' Data from Saudi Games

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 50

 | 

Security Affairs newsletter Round 529 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Cyber Crime
  • Malware
  • Sinclair TV stations downtime allegedly caused by a ransomware attack

Sinclair TV stations downtime allegedly caused by a ransomware attack

Pierluigi Paganini October 18, 2021

A ransomware attack is likely the cause of the recent downtime for TV stations owned by the Sinclair Broadcast Group broadcast television company.

TV stations owned by the Sinclair Broadcast Group went down over the weekend officially due to technical issues, but some media [1,2] reported that it was a victim of a ransomware attack.

The alleged attack compromised the Sinclair internal corporate network, the broadcasting systems of TV stations, email servers, and phone services were impacted.

Still dealing with technical difficulties at @CBS6Albany …. Our 11pm newscast (which is starting late after football) will be unconventional. We’re working with handwritten notes, and it’s going to be a bit more conversational. Tune in, and thanks for bearing with us! 😀🙏🏼 pic.twitter.com/D620UCD72F

— Leanne DeRosa (@LeanneDeRosa7) October 18, 2021

We are learning this is a corporate wide problem. We are standing by as we wait to get on the air. https://t.co/aYaSa3VJLU

— Kristin Bien (@KristinBienWSBT) October 17, 2021

Sinclair Broadcast Group is a Fortune 500 media company, the group is a publicly-traded American telecommunications conglomerate having annual revenues of $5.9 billion in 2020.

The company is the second-largest television station operator in the United States by number of stations, it owns or operates a total of 193 stations across the country in over 100 markets (covering 40% of American households). The company operates many stations affiliated with Fox, ABC, and The CW.

Sources have told BleepingComputer that ransomware operators shut down Active Directory services for the domain, paralyzing the services at the company and its affiliates.

According to TheRecord media, the attack did not impact “the master control” of the Sinclair broadcast system that allows the TV stations to replace the scheduled local programming on the affected channels with a national feed

In July, the company suffered another security incident, in response to the security breach it forced all Sinclair stations to reset their passwords.

Recently, the American media conglomerate Cox Media Group (CMG) announced it was hit by a ransomware attack that caused the interruption of the live TV and radio broadcast streams in June 2021. The company notified via mail hundreds of individuals that were impacted by the security breach and that that have had their personal data exposed in the attack. 

Follow me on Twitter: @securityaffairs and Facebook

[adrotate banner=”9″][adrotate banner=”12″]

Pierluigi Paganini

(SecurityAffairs – hacking, cyber security)

[adrotate banner=”5″]

[adrotate banner=”13″]


facebook linkedin twitter

Cybercrime Hacking hacking news information security news IT Information Security malware Pierluigi Paganini ransomware Security Affairs Security News Sinclair

you might also like

Pierluigi Paganini June 27, 2025
OneClik APT campaign targets energy sector with stealthy backdoors
Read more
Pierluigi Paganini June 27, 2025
APT42 impersonates cyber professionals to phish Israeli academics and journalists
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    OneClik APT campaign targets energy sector with stealthy backdoors

    Hacking / June 27, 2025

    APT42 impersonates cyber professionals to phish Israeli academics and journalists

    APT / June 27, 2025

    Kai West, aka IntelBroker, indicted for cyberattacks causing $25M in damages

    Cyber Crime / June 26, 2025

    Cisco fixed critical ISE flaws allowing Root-level remote code execution

    Security / June 26, 2025

    U.S. CISA adds AMI MegaRAC SPx, D-Link DIR-859 routers, and Fortinet FortiOS flaws to its Known Exploited Vulnerabilities catalog

    Security / June 26, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT