Which companies and organizations in the U.S. have been victims of a hacker attack?
The entries are sorted chronologically descending. Each entry has a link to a source.

IT security: Cyber attack US news

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28 November 2021
Ransomware at a community college in Pennsylvania
Butler County Community College, Butler, Pennsylvania, USA
23 November 2021
Ransomware attack on a college in Illinois
Godfrey, Illinois, USA
17 November 2021
Data leak at a domain registrar in the USA
GoDaddy, Tempe, Arizona, USA
November 2021
Ransomware at US pharmaceutical company
Supernus Pharmaceuticals, Inc., Rockville, Maryland, USA
12 November 2021
Cyberattack on West Virginia Parkways Authority
West Virginia Parkways Authority, Charleston, West Virginia, USA
12 November 2021
FBI server used to send hoax emails
(Location unknown)
11. November 2021
Cyberattack on a hospital in Ohio
Southern Ohio Medical Center (SOMC), Portsmouth, Ohio, USA
7 November 2021
Cyberattack on a local electricity provider in Colorado
Montrose, Colorado, USA
3 November 2021
Data breach at financial portal
Robinhood Markets Inc., Menlo Park, California, USA
2 November 2021
Cyber attack on a library in Ohio
Toledo, Ohio, USA
October 2021
Cyberattack on transit authority in Ann Arbor, Mich.
Ann Arbor Area Transportation Authority "TheRide", Ann Arbor, Michigan, USA
24 October 2021
Ransomware at school district in Wisconsin, USA
School District of Janesville, Janesville, Wisconsin, USA
23 October 2021
Ransomware at dairy company in Wisconsin
Schreiber Foods Inc., Green Bay, Wisconsin, USA
17 October 2021
Malware / Ransomware at Healthcare Provider in Los Angeles
Planned Parenthood Los Angeles (PPLA), Los Angeles, California, USA
16 October 2021
Ransomware at a school district in Pennsylvania
Corry, Pennsylvania, USA
16 October 2021
Ransomware at a US media company

The company operates numerous local TV stations.

Sinclair Broadcast Group Inc., Hunt Valley, Maryland, USA
12 October 2021
Cyberattack on Americas IT of a technology company
Olympus Corporation, Center Valley, Pennsylvania, USA
9 October 2021
Ransomware at major candy manufacturer in the U.S.
Ferrara Candy, Chicago, Illinois, USA
October 2021
Cyber attack on township in New Jersey
Middletown Township, New Jersey, USA
4 October 2021
Cyber attack on school district in South Carolina

There were 800 computers affected, and the cost to rebuild is estimated at about $191,000.

Colleton County School District, Walterboro, South Carolina, USA
3 October 2021
Cyber attack on a school district in California
Lodi School District, Lodi, California, USA
3 October 2021
Ransomware at logistics company in Wisconsin
Marten Transport Ltd., Mondovi, Wisconsin, USA
03. October 2021
Ransomware attack on media- and internet company in Nebraska
Sandhills Global, Lincoln, Nebraska, USA
2 October 2021
Cyber attack on a hospital in Franklin, Indiana
Johnson Memorial Health, Franklin, Indiana, USA
02 October 2021
Ransomware attack on a university in Maryland, USA
Washington Adventist University (WAU), Takoma Park, Maryland, USA
30 September 2021
Ransomware attack on a media company in Pennsylvania
LNP Media Group Inc., Lancaster, Pennsylvania, USA
29. September 2021
Canton, North Carolina police phone system outage after cyberattack
Canton, North Carolina, USA
29 September 2021
Cyber attack on a hospital in Indiana, USA
Schneck Medical Center, Seymour, Indiana, USA
28 September 2021
Phone outage after cyberattack at a North Carolina school district
Wake County Public School System, Cary, North Carolina, USA
28 September 2021
Ransomware at pawnshop chain in the US
Pawn America, Burnsville, Minnesota, USA
28 September 2021
Ransomware at school district in Texas
Lufkin Independent School District (ISD), Lufkin, Texas, USA
27 September 2021
Cyber attack on school district in Connecticut
Stonington Public Schools, Pawcatuck, Stonington, Connecticut, USA
September 2021
DDoS attack an US telecommunications provider
Bandwidth Inc., Raleigh, North Carolina, USA
25 September 2021
Cyberattack on casino in Santa Fe, New Mexico
Tesuque Casino, Santa Fe, New Mexico, USA
23 September 2021
Cyber attack on school district in Texas
Allen Independent School District (Allen ISD), Allen, Texas, USA
September 2021
Ransomware attack on healthcare provider in California
United Health Centers of San Joaquin Valley, Fresno, California, USA
21 September 2021
Ransomware at a healthcare provider in New Hampshire.
Coos County Family Health Services, Berlin, New Hampshire, USA
20 September 2021
Hacker attack on real estate company in California
Marcus & Millichap, Inc, Calabasas, California, USA
September 2021
Ransomware at a large agricultural company in Iowa
NEW Cooperative Inc., Iowa, USA
September 2021
Cyberattack on advertising service provider for radio stations in the USA
Marketron Broadcast Solutions, Hailey, Idaho, USA
19 September 2021
Ransomware attack on a Minnesota agriculture company
Crystal Valley, Mankato, Minnesota, USA
17 September 2021
Ransomware attack on the administration of Pottawatomie County, Kansas
Pottawatomie County, Westmoreland, Kansas, USA
14 September 2021
Cyberattack on a hospital in Kansas, USA
Salina, Kansas, USA
September 2021
Data breach at U.S. Internet company
Epik Holdings Inc., Bellevue, Washington, USA
12 September 2021
Cyber attack on US technology provider
TTEC Holdings, Inc., Englewood, Colorado, USA
11 September 2021
Data breach at Missouri teachers' pension fund
Public School and Education Employee Retirement Systems (PSRS/PEERS), Jefferson City, Missouri, USA
10 September 2021
Cyber attack on Mount Vernon city government
Mount Vernon, New York, USA
September 2021
Ransomware at a Missouri health center.
Missouri Delta Medical Center, Sikeston, Missouri, USA
06 September 2021
Cyber attack on the city hall of Yonkers, New York
Yonkers, New York, USA
03 September 2021
Ransomware at a private university in Washington, D.C.

Affected is the Howard University.

Howard University
1 September 2021
Hacker attack on the University of Colorado Boulder

The attack on vulnerability in an Atlassian software leaked personal data of 30,000 former employees and students.

University of Colorado Boulder, Boulder, Colorado, USA
30 August 2021
Ransomware at a bank in the USA

The attackers had access to certain customer data.

Pacific City Bank, Los Angeles, California, USA
27 August 2021
Attack with ransomware on a hospital in California
Barlow Respiratory Hospital, Los Angeles, California, USA
27 August 2021
Data breach at children's advocacy group in California
Seneca Family of Agencies, Oakland, California, USA
25 August 2021
Cyber attack on the Boston Public Library
25 August 2021
Hackers try to divert funds from a San Antonio school district

North East Independent School District (NEISD)

23 August 2021
Peterborough, New Hampshire defrauded of $2.3 million by cybercriminals

The small town of Peterborough in the northeast of the USA has about 6300 inhabitants. In July and August, it was defrauded of a total of $2.3 million. According to reports, mails with false identities were used to divert upcoming payments to the school district and two contractors to other accounts.

21 August 2021
Cyberattack on US State Department reported
16 August 2021
Hackers offer to buy 100 million customer records of US mobile operator

T-Mobile USA confirms a cyber incident.

15 August 2021
Cyber attack on a health system in Marietta, Ohio.

Memorial Health System is a not-for-profit health system that operates three hospitals and several other facilities in the Marietta area. A cyberattack took place in the early morning hours of Aug. 15.

August 2021
Cyber attack on the Port of Houston, Texas
Port of Houston Authority (Port Houston), Houston, Texas, USA
8 August 2021
Ransomware at fertility clinic in Massachusetts

Data on approximately 350,000 patients may have been disclosed.

ReproSource, Marlborough, Massachusetts, USA
04 August 2021
Ransomware attack on Indianapolis hospital

Sidney & Lois Eskenazi Hospital (Eskenazi Health) is a hospital located in Indianapolis, Indiana.

July 2021
Malware at Alabama school district
July 2021
Ransomware at factoring company in Florida

The attack on eCapital was initially claimed by two ransomware gangs at once.

July 2021
Ransomware at the city government of Lewiston, Minnesota
City government, Lewiston, Minnesota, USA
19 July 2021
Data breach due to burglary at mental health care provider in Seattle
Samaritan Center of Puget Sound, Seattle, Washington, USA
July 2021
Facebook stops Iran spying action

As part of an espionage operation, the Facebook platform was used to target individuals working in the military, defense and aerospace sectors, mainly in the US. Social engineering, phishing, identity theft, and malware were used.

13 July 2021
Cyberattack on Chicago-area physician group

Affected is the DuPage Medical Group (DMG). According to press reports, potentially 600,000 patients are affected by the data theft.

11 July 2021
Cyberattack on the city administration of Clearfield, Utah

Ransomware encrypted the data, a ransom of millions was demanded.

July 2021
Ransomware at electric utility in Alabama
July 2021
Ransomware at pipeline technology provider
05 July 2021
Ransomware attack on a not-for-profit organization in California
04 July 2021
Ransomware attack on wastewater treatment plant in Limestone, Maine

A computer was attacked that was still running Windows 7. Data was not disclosed.

02 July 2021
Indiana Department of Health hacked by cyber firm without authorization

Data on nearly 750,000 Indiana citizens from Covid contact tracing was accessed.

June 2021
Cyber attack on IT service provider in Puerto Rico, customers of a bank affected
June 2021
Customer data stripped from the computer of a support employee of a large IT company
24 June 2021
Possible data breach theft of protected data at health care provider

Metro Infectious Disease Consultants reports that there was unauthorized access to an email account, and as a result there may have been access to the data of more than 171,000 patients.

17 June 2021
Hacker attack on a school district in Missouri, USA

The Rockwood School District's IT systems in Eureka, Missouri, have been the target of a hacking attack.

17 June 2021
Ransomware at a health system in Savannah, Georgia

St. Joseph`s/Candler operates several hospitals and other facilities in the Savannah region, Georgia (USA). Unknown persons had access to the network since December 18, 2020, and launched a ransomware attack.

17 June 2021
Ransomware at a Texas School District
June 2021
Cyber attack on fast food chain in USA, South Korea and Taiwan
June 2021
Data theft at major computer games provider

Criminals have stolen large amounts of source code for games from Eletronics Arts and are offering it on the Internet. The attackers boast about how easily they gained access via purchased Slack access tokens and simple social engineering.

June 2021
DDoS attack on electricity company in Puerto Rico, followed by fire at substation

It later turned out that the fire broke out due to a technical defect.

June 2021
Ransomware attack on Monroe, Michigan schools
June 2021
US kitchen equipment supplier affected by ransomware
June 2021
Cyber attack on ferry operator in Massachusetts, USA
June 2021
Hackers have penetrated the IT system of the Legal Department of the City of New York
June 2021
Ransomware attack on a Las Vegas hospital

The University Medical Center of Southern Nevada (UMC) was the victim of a cyber attack, with personal data stolen.

May 2021
Cyber attack on world's largest meat producer

The company paid a ransom of 11 million dollar.

May 2021
Ransomware at University Hospitals in Florida
27 May 2021
Ransomware at the city government of Bridgeport, West Virginia
May 2021
Cyber attack on the administration of Mobile County, Alabama

Malware was found, some systems were shut down for 3 days.

May 2021
Data breach at US service company

Through a vulnerability in file transfer software.

May 2021
Ransomware at heart clinics in Florida

Unknown persons had access to the systems for 10 days and crippled the entire system with the help of ransomware. At the end of July, operations are running at 50%.

19 May 2021
Ransomware at medical lab in Florida

Personal data of potentially 33,000 patients were affected.

Nationwide Laboratory Services, Boca Raton, Florida, USA
18 May 2021
Cyber attack on the Alaska Department of Health and Social Services

The website was shut down and thus numerous services were no longer available.

May 2021
Cyber attack on major pipeline operator in the U.S.
03 May 2021
Malware at refuse disposal district in Berlin, New Hampshire
Androscoggin Valley Regional Refuse Disposal District, Berlin, New Hampshire, USA
May 2021
Ransomware at hospital operator in San Diego

5 hospitals are affected.

May 2021
Cyber attack on company advising U.S. government on nuclear security

Documents were published on the darknet.

May 2021
Major US telecom service provider notices 5-year hack

The unauthorized access began in 2016.

Tampa, Florida, USA
May 2021
Ransomware at US subsidiary of chemical wholesaler

A ransom of $4.4 million was reportedly paid.

May 2021
Truck manufacturer in the USA became a victim of a hacker attack

Data was siphoned off, which was later offered for sale on the Darknet.

29. April 2021
Cyber attack on school district in Madison, Alabama
Madison City Schools, Madison, Alabama, USA
April 2021
Compromised emails at patient financing provider

An unauthorized bank transfer was detected and prevented. When the incident was analyzed, it was discovered that unknown persons had accessed the company's email accounts through phishing for over 1.5 months. Personal data of potentially 210,000 people was also exposed in the process.

26 April 2021
Ransomware at school district in Portland, Oregon
Centennial School District, Portland, Oregon, USA
April 2021
Cyber attack on US supplier of clear braces

SmileDirectClub, headquartered in Nashville, Tennessee, has 4,000 employees and generated $657 million in revenue in 2020. In an initial assessment, the company expects to lose $10 million to $15 million in revenue due to the disruption in production as a result of the attack. Data and personal information were not leaked, and no ransom was paid.

April 2021
Cyber incident at medical technology provider headquartered in Sweden

Unauthorized access to cancer registry software in the cloud may have exposed the data of more than 200,000 U.S. patients.

April 2021
Data breach at church healthcare company in the U.S.

Through a vulnerability in file transfer software.

April 2021
Data theft at the University of California

Through a vulnerability in file transfer software.

University of California
05 April 2021
Hacker attack on IT of the United Nations
April 2021
Attack on the Metropolitan Police Department Washington

Because no ransom was paid, the attackers published confidential documents on the Darknet.

April 2021
Cyber attack on wastewater treatment plant in Mount Desert, Maine

After ransomware, the office computers were out of service for three days. The treatment plant was not affected. Data was not disclosed, nor was a ransom paid.

April 2021
Hackers have penetrated the IT system of the New York Metropolitan Transportation Authority
April 2014
US water utility attacked via VPN software vulnerability

Apparently, however, without any major impact.

March 2021
Data theft at the Stanford University

Through a vulnerability in file transfer software.

Stanford University, Stanford, California, USA
20 March 2021
Cyber incident at Arizona colleges
Maricopa Community Colleges, Tempe, Arizona, USA
20 March 2021
Data breach at US media group
Paxton Media Group, Paducah, Kentucky, USA
12 March 2021
Ransomware at City of Buffalo School District
March 2021
Cyber attack on a major brewery in the USA
March 2021
Hackers gain access to 150,000 surveillance cameras

The cloud provider's cameras were located in factory floors, police stations and prisons.

Verkada Inc., San Mateo, California, USA
March 2021
Data theft at US bank

Through a vulnerability in file transfer software.

March 2021
Cyber attack on major audio equipment manufacturer in the U.S.
Bose, Farmingham, Massachusetts, USA
05 March 2021
Ransomware at US mental healthcare provider
Horizon House, Inc., Philadelphia, Pennsylvania, USA
March 2021
Ransomware attack on US insurance company

It is reported that CNA Financial Corp. paid a ransom of $40 million.

28 February 2021
Cyber attack on the University of Millersville, Pennsylvania
Millersville University of Pennsylvania, Millersville, Pennsylvania, USA
February 2021
Cyber attack on city government of Kingman, Arizona
26 February 2021
Cyberattack on the city government of Kingman, Arizona

The city of Kingman has a population of approximately 28,000. Only a few personal data were stolen as a result of the attack. By April, operations had been restored. The method of the intrusion could not be determined.

24 February 2021
Cyberattack on IT service provider for passenger aviation

Personal data of passengers of various airlines were stolen, including 4.5 million records of India's Air India.

SITA Passenger Service System (US) Inc., USA, Georgia, USA
16 February 2021
Ransomware at payroll processing company in Hawaii
Hawaii Payroll Services LLC, Honolulu, Hawaii, USA
14 February 2021
Ransomware at US restaurant chain
Carisch, Inc., Wayzata, Minnesota, USA
February 2021
Data theft and extortion at US university

Through a vulnerability in file transfer software.

University of Colorado
09 February 2021
Ransomware at hospital in Attleboro, Massachusetts

Sturdy Memorial Hospital was the victim of a ransomware attack and paid a ransom to keep the stolen data from being released.

February 2021
Attempted tampering with a Florida city's water treatment plant
February 2021
Data theft at US healthcare provider
February 2021
City of Le Claire, Iowa, pays more than $200,000 to email scammers

Payments to legitimate vendors were diverted to other accounts. More than $120,000 was recovered.

February 2021
Data theft at US grocery chain

Through a vulnerability in file transfer software.

January 2021
Data breach at health organization in Arizona
Arizona Complete Health, Arizona, USA
21 January 2021
Data breach at U.S. waste management company

Employee health data may have been stolen in the process

January 2021
Data breach at U.S. health insurer in Arkansas

A vulnerability in Accellion file transfer software resulted in a data theft at Arkansas Health & Wellness.

January 2021
Multiple University of Huntsville email accounts compromised
University of Alabama in Huntsville, Huntsville, Alabama, USA
January 2021
Ransomware at eye clinic in Arizona
Cochise Eye and Laser, Sierra Vista, Arizona, USA
10 January 2021
Ransomware at a Texas medical group
09 January 2021
Hacker attack on Clearfield County administration

Clearfield County is located in Pennsylvania, in the northeastern United States.

January 2021
Malware at gambling machine parlor operator in the U.S.

Dotty's operates approximately 120 locations in Nevada.

About the author

Bert Kondruss
Bert Kondruss
Cyber security expert
Founder and Managing Director of KonBriefing.com

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