Phone numbers data breaches

American Tower had data on over 216,000 employees, contractors, customers, and leads exposed after a ShinyHunters extortion campaign in June 2026.

Madison Square Garden Sports had data on nearly 10 million accounts exposed after the ShinyHunters group carried out a pay-or-leak extortion campaign and published the stolen data online.

JCPenney suffered a data breach in June 2026 when ShinyHunters exploited a zero-day vulnerability in Oracle PeopleSoft, exposing personal and HR data for approximately 368,000 current and former employees.

Ralph Lauren had data on approximately 140,000 individuals exposed after the ShinyHunters group claimed to have extracted records from the company's Salesforce instance and published them as part of an extortion campaign.

CFGI, a financial consulting and advisory firm, had data on approximately 248,000 individuals exposed after the ShinyHunters group conducted an extortion campaign and subsequently published corporate contact information.

Infinite Campus, a student information system, had data on approximately 137,000 accounts stolen and published by the ShinyHunters group in March 2026 following an extortion campaign.

Berkadia, a commercial real estate finance company, had data from its Salesforce instance published by the ShinyHunters group in March 2026, exposing over 300,000 individuals' contact and employer information.

Baker Distributing Company had data on approximately 103,000 accounts exposed after the ShinyHunters extortion group published information allegedly taken from the company's SharePoint and Salesforce systems in May 2026.

BCD Travel, a corporate travel management company, had data on approximately 396,000 individuals exposed after ShinyHunters claimed the company as a victim of an extortion campaign and published the data publicly in early June 2026.

DentaQuest, a dental benefits administrator, had data on approximately 2.6 million individuals publicly leaked by the ShinyHunters group following an extortion campaign in May 2026.

Edmunds, the automotive research and car-shopping platform, had data on approximately 178,000 accounts exposed after the ShinyHunters hacking group claimed a breach in January 2026.

Charter Communications had data on approximately 4.9 million accounts exposed after the ShinyHunters group threatened extortion and subsequently published the stolen data.

Kemper Corporation had data on approximately 269,000 individuals exposed after the ShinyHunters ransomware group accessed its Salesforce environment via social engineering and published the stolen data in an extortion campaign.

Mytheresa, a luxury fashion e-commerce platform, had data on approximately 84,000 customers exposed after the ShinyHunters extortion group published it following a failed ransom demand in April 2026.

Ameriprise Financial had data from approximately 500,000 accounts exposed after the ShinyHunters group exfiltrated over 200GB from its Salesforce and SharePoint systems and published it following failed extortion negotiations.

Colombian fintech company Addi suffered a breach in March 2026 affecting over 34 million accounts, exposing financial, identity, and credit-related personal data after the ShinyHunters group claimed responsibility and published the stolen data.

7-Eleven suffered a data breach in April 2026 when the ShinyHunters group conducted an extortion campaign and later published data on approximately 185,000 individuals.

In April 2026, data allegedly taken from CTT, Portugal's national postal service, was posted to a public hacking forum, affecting approximately 468,000 accounts.

Abrigo, a fintech software company, had data from its Salesforce instance published by the ShinyHunters group in April 2026, exposing business contact information for over 711,000 individuals.

Canada Life suffered a data breach in April 2026 when the ShinyHunters group stole and published data on over 237,000 customers, including names, email addresses, phone numbers, physical addresses, and support tickets.

In May 2026, real estate services firm Cushman & Wakefield had data on approximately 310,000 accounts exposed after the ShinyHunters group carried out an extortion campaign and published stolen corporate contact records.

Woflow, an AI-driven merchant data platform, had data on approximately 447,593 accounts exposed after the ShinyHunters extortion group published files allegedly stolen from the company in March 2026.

Marcus & Millichap, a commercial real estate brokerage, had data on approximately 1.8 million individuals exposed after being named as an alleged victim of the ShinyHunters hacking group in April 2026.

ZenBusiness, a business formation platform, had data on approximately 5.1 million accounts exposed after the hacker group ShinyHunters claimed to have exfiltrated records from multiple platforms and publicly released the data following an unpaid ransom demand.

Aman, an ultra-luxury hotel brand, suffered a data breach in April 2026 when ShinyHunters obtained customer records from their Salesforce CRM and later leaked them publicly.

Udemy suffered a data breach affecting 1.4 million accounts, with customer and instructor information including email addresses, names, addresses, phone numbers, and payment methods exposed.

SUCCESS, a personal development media brand, suffered a data breach in March 2026 exposing approximately 253,510 accounts with names, email addresses, phone numbers, and other personal information.

Pitney Bowes suffered a data breach in April 2026 affecting approximately 8.2 million individuals, with ShinyHunters claiming responsibility and publicly releasing the stolen data.

McGraw Hill confirmed a data breach in April 2026 affecting 13.5 million accounts, exposing email addresses, names, phone numbers, and physical addresses due to a Salesforce misconfiguration.

Hallmark suffered a breach in March 2026 after attackers accessed data stored in Salesforce, exposing approximately 1.7 million customer records.

Turkish restaurant chain Baydöner suffered a data breach in March 2026 exposing over 1.2 million customer records including names, email addresses, phone numbers, and plaintext passwords.

Aura disclosed a data breach in March 2026 affecting over 900,000 customer records, primarily from a marketing tool associated with a previously acquired company.

ADT confirmed a data breach affecting 5.5 million customers in April 2026, with ShinyHunters claiming responsibility and threatening to leak the data.