Security Affairs

JUNE 19, 2025

Researchers discovered the largest data breach ever, exposing 16 billion login credentials, likely due to multiple infostealers. Researchers announced the discovery of what appears to be the largest data breach ever recorded, with an astonishing 16 billion login credentials exposed. The compilation (“rockyou2024.txt”)

Data breaches 115

Data breaches Identity Theft Passwords Malware 115

Security Affairs

JANUARY 26, 2025

The Change Healthcare data breach is worse than initially estimated: approximately 190 million people have been affected. The Change Healthcare data breach is worse than initially estimated, the incident has impacted 190 million people. healthcare industry, the company said Friday.”

Healthcare 130

Healthcare Data breaches Insurance Cybercrime 130

Security Affairs

MARCH 8, 2025

A data breach suffered by the Japanese telecom giant NTT exposed information of nearly 18,000 corporate customers. Japanese telecom giant NTT suffered a data breach that exposed information of nearly 18,000 corporate customers. ” reads the data breach notification published by the company.

Data breaches 116

Data breaches Mobile Hacking Malware 116

Security Affairs

OCTOBER 18, 2024

Omni Family Health disclosed a data breach affecting nearly 470,000 current and former patients and employees. Omni Family Health is notifying nearly 470,000 individuals that their personal information was compromised in a data breach resulting from a cyberattack that occurred earlier this year.

Data breaches 140

Data breaches Healthcare Insurance Engineering 140

Security Affairs

APRIL 13, 2025

Cell C, one of the biggest telecom providers in South Africa confirms a data breach following a 2024 cyberattack. The company founded in 2001 offers prepaid and postpaid mobile plans, data bundles and internet services, fiber broadband, roaming and international calling, SIM-only plans and device deals.

Data breaches 129

Data breaches Unstructured Data Identity Theft Healthcare 129

Security Affairs

JANUARY 11, 2025

US marijuana dispensary STIIIZY warns customers of leaked IDs and passports following a November data breach. US marijuana dispensary STIIIZY disclosed a data breach after a vendor’s point-of-sale system was compromised by cybercriminals.

Data breaches 113

Data breaches Retail Cybercrime Government 113

Security Affairs

APRIL 16, 2025

Conduent suffered another security breach in 2020 by the Maze ransomware gang, which stole corporate data. Follow me on Twitter: @securityaffairs and Facebook and Mastodon Pierluigi Paganini ( SecurityAffairs hacking,data breach)

Data breaches 112

Data breaches Government Cyber Insurance Business Services 112

Security Affairs

OCTOBER 14, 2024

US-based financial services company Fidelity Investments warns 77,000 individuals of a data breach that exposed their personal information. The data breach occurred on August 17, 2024 and was discovered two days later, on August 19, 2024.

Data breaches 134

Data breaches Financial Services Accountability Hacking 134

Security Affairs

JUNE 4, 2025

Luxury-goods conglomerate Cartier disclosed a data breach that exposed customer information after a cyberattack. Cartier has disclosed a data breach following a cyberattack that compromised its systems, exposing customers’ personal information.

Data breaches 98

Data breaches Cyber Attacks Manufacturing Banking 98

Security Affairs

MARCH 19, 2025

California Cryobank, the largest US sperm bank, suffered a data breach exposing customer information. The company disclosed a data breach that exposed customers’ personal information. ” reads the data breach notification letter shared with Maine Attorney General.”Out

Data breaches 109

Data breaches Banking Insurance Hacking 109

Security Affairs

DECEMBER 8, 2024

Follow me on Twitter: @securityaffairs and Facebook and Mastodon Pierluigi Paganini ( SecurityAffairs hacking,Anna Jaques Hospital) .” The hospital offered impacted individuals 24 Months, Experian and 1B credit monitoring.

Data breaches 117

Data breaches Insurance Healthcare Ransomware 117

Schneier on Security

APRIL 8, 2025

Compromising our telecommunications infrastructure is now little different from performing any other kind of computer intrusion or data breach, a well-known and endemic cybersecurity problem. The hacks reportedly may have resulted in the “vast collection of internet traffic”; from the telecom and internet giants.

Telecommunications 244

Telecommunications Internet Internet Government 244

Security Affairs

DECEMBER 29, 2024

notifies customers of credit card data breach, after threat actors hacked a third-party app from its e-commerce provider. disclosed a data breach that exposed its customers’ credit card data after threat actors hacked a third-party application from its e-commerce providerBigCommerce.

Data breaches 82

Data breaches Computers and Electronics Hacking Wireless 82

Security Affairs

JANUARY 3, 2025

A recovery team, with help from a cybersecurity firm, worked to restore systems and assess the attack’s scope, including its potential impact on patient data. Follow me on Twitter: @securityaffairs and Facebook and Mastodon Pierluigi Paganini ( SecurityAffairs hacking,data breach)

Data breaches 77

Data breaches Ransomware Insurance Healthcare 77

Security Affairs

DECEMBER 6, 2024

Atrium Health disclosed a data breach affecting 585,000 individuals to the HHS, potentially linked to the use of online tracking tools. Healthcare company Atrium Health disclosed a data breach that impacted 585,000 individuals. The company notified the US Department of Health and Human Services (HHS).

Data breaches 112

Data breaches Identity Theft Accountability Healthcare 112

Security Affairs

DECEMBER 18, 2024

Meta has been fined 251M ($263M) for a 2018 data breach affecting millions in the EU, marking another penalty for violating privacy laws. The Irish Data Protection Commission (DPC) fined Meta 251 million ($263M) for a 2018 data breach impacting 29 million Facebook accounts.

Data breaches 106

Data breaches Accountability Risk Advertising 106

Hacker's King

DECEMBER 28, 2024

Data breaches and account hacks are a growing concern for users, especially with the personal and professional information shared on the platform. If youre worried about your Instagram account being hacked , it's essential to take proactive steps to protect your data.

Data breaches 52

Data breaches Hacking Passwords Accountability 52

Security Affairs

MAY 15, 2025

Coinbase confirmed rogue contractors stole customer data and demanded a $20M ransom in a breach reported to the SEC. Coinbase said rogue contractors stole data on under 1% of users and demanded $20M; the data breach was disclosed in an SEC filing. The final impact remains under review.

Data breaches 86

Data breaches Banking Accountability Threat Detection 86

Security Affairs

APRIL 26, 2025

African multinational telecommunications company MTN Group disclosed a data breach that exposed subscribers’ personal information. In April 2025, Cell C, one of the biggest telecom providers in South Africa, confirmed a data breach following a 2024 cyberattack.

Data breaches 106

Data breaches Telecommunications Financial Services Mobile 106

Security Affairs

JUNE 30, 2025

A ransomware attack on grocery giant Ahold Delhaize led to a data breach that affected more than 2.2 A ransomware attack on Dutch grocery giant Ahold Delhaize has led to a data breach affecting over 2.2 ” Ahold Delhaize determined that the data breach impacted 2,242,521 individuals and is notifying them.

Data breaches 88

Data breaches eCommerce Retail Accountability 88

Security Affairs

JULY 9, 2025

Nippon Steel Solutions reported a data breach caused by hackers exploiting a zero-day vulnerability in their network equipment. Nippon Steel Solutions, a subsidiary of Japan’s Nippon Steel, disclosed a data breach, attackers exploited a zero-day vulnerability. The company provides cloud and cybersecurity services.

Data breaches 112

Data breaches Media Hacking Risk 112

Security Affairs

FEBRUARY 4, 2025

Online food ordering and delivery platform GrubHub suffered a data breach that exposed the personal information of drivers and customers. This week the online food ordering and delivery firm GrubHub disclosed a data breach that exposed customer and driver information.

Data breaches 115

Data breaches Passwords Accountability Hacking 115

The Last Watchdog

OCTOBER 23, 2024

Tip 1: Educating and Training the Workforce Regularly Human error remains one of the leading causes of data breaches. According to the Verizon 2024 Data Breach Investigations Report , 68% of cybersecurity breaches are caused by human error. Many cyber attacks exploit vulnerabilities in outdated software.

Small Business 162

Small Business Data breaches Backups Passwords 162

Security Affairs

APRIL 11, 2025

Laboratory Services Cooperative discloses a data breach from October 2024 that exposed personal and medical info of 1.6 Laboratory Services Cooperative disclosed a data breach that impacted the personal and medical information of 1.6 ” reads the notice of data breach. million individuals.

Data breaches 97

Data breaches Insurance Banking Accountability 97

Heimadal Security

JULY 17, 2025

From a hacked Muppet to ransomware takedowns, leaky AI at the Golden Arches, a betting breach, and SMBs sleepwalking into […] The post 123456 Password Leads to McDonald’s Data Breach appeared first on Heimdal Security Blog.

Data breaches 85

Data breaches Passwords Ransomware Hacking 85

Security Affairs

APRIL 5, 2025

Port of Seattle is notifying 90,000 people of a data breach after personal data was stolen in a ransomware attack in August 2024. Follow me on Twitter: @securityaffairs and Facebook and Mastodon Pierluigi Paganini ( SecurityAffairs hacking,Port of Seattle) The attack impacted websites and phone systems.

Data breaches 97

Data breaches Ransomware Cyber Attacks Manufacturing 97

Security Affairs

JANUARY 27, 2025

UK telecommunications firm TalkTalk disclosed a data breach after a threat actor announced the hack on a cybercrime forum. UK telecommunications company TalkTalk confirmed a data breach after a threat actor claimed responsibility for the cyber attack on a cybercrime forum and offered for sale alleged customer data.

Data breaches 70

Data breaches Telecommunications Cybercrime Hacking 70

Malwarebytes

JUNE 30, 2025

AT&T is set to pay $177 million to customers affected by two significant data breaches. These breaches exposed sensitive personal information of millions of current and former AT&T customers. Later reports indicated this breach started in 2019.

Data breaches 115

Data breaches Cybercrime Hacking Encryption 115

Security Affairs

OCTOBER 31, 2024

Peruvian Interbank confirmed a data breach after threat actors accessed its systems and leaked stolen information online. Interbank disclosed a data breach after a threat actor claimed the hack of the organization and leaked stolen data online.

Data breaches 129

Data breaches Financial Services Hacking Mobile 129

Security Affairs

JUNE 23, 2025

The ransomware attack that hit McLaren Health Care in 2024 exposed the personal data of 743,000 individuals. McLaren Health Care is notifying over 743,000 people of a data breach discovered on August 5, 2024. ” reads the data breach notification letter shared with the Maine Attorney General’s Office.

Data breaches 65

Data breaches Insurance Identity Theft Ransomware 65

Security Affairs

APRIL 15, 2025

Hertz Corporation disclosed a data breach after customer data was stolen via Cleo zero-day exploits in late 2024, affecting Hertz, Thrifty, and Dollar brands. Car rental giant Hertz Corporation disclosed a data breach that impacted its Hertz, Thrifty, and Dollar brands.

Data breaches 65

Data breaches Ransomware Hacking Software 65

Security Affairs

JULY 2, 2025

Follow me on Twitter: @securityaffairs and Facebook and Mastodon Pierluigi Paganini ( SecurityAffairs – hacking, Qantas) Organizations should be on high alert for sophisticated and targeted social engineering attacks and suspicious MFA reset requests.” Palo Alto Networks Unit 42’s Sam Rubin wrote on LinkedIn.

Data breaches 65

Data breaches Social Engineering Engineering Cybercrime 65

Security Affairs

APRIL 10, 2025

No OCI customer data has been viewed or stolen. No OCI service has been interrupted or compromised in any way,” Last week, Oracle confirmed a data breach and started informing customers while downplaying the impact of the incident. .”No OCI customer environment has been penetrated.

Hacking 121

Hacking Data breaches Encryption Authentication 121

Security Affairs

NOVEMBER 18, 2024

T-Mobile confirmed being a victim of recent hacking campaigns linked to China-based threat actors targeting telecom companies. T-Mobile confirms it was hacked as part of a long-running cyber espionage campaign targeting Telco companies. and its allies for hacking activities in July. Wall Street Journal reported.

Mobile 114

Mobile Telecommunications Data breaches Hacking 114

Security Affairs

JANUARY 20, 2025

Data available for sale includes the source code for some company products, including Zerto and ILO (Integrated Lights-Out), SAP Hybris, digital certificates, Docker builds, private GitHub repositories, and old user PII for deliveries. “Today, I am selling the Hewlett Packet Enterprise (HPE) data breach.

Hacking 119

Hacking Cybercrime Data breaches Information Security 119

Security Affairs

JANUARY 16, 2025

The law firm Wolf Haldenstein disclosed a data breach that exposed the personal information of nearly 3.5 The law firm Wolf Haldenstein disclosed a 2023 data breach that exposed the personal information of nearly 3.5 million individuals. million individuals.

Data breaches 97

Data breaches Identity Theft Consumer Protection Data collection 97

Security Affairs

DECEMBER 7, 2024

Follow me on Twitter: @securityaffairs and Facebook and Mastodon Pierluigi Paganini ( SecurityAffairs hacking,ransomware) Grabovac pointed out that his organization will not pay the ransom requested by the ransomware gang.

Ransomware 125

Ransomware Hacking Accountability Cyber Attacks 125