"After a data breach at Verizon Enterprise Solutions, a prominent member of a closely guarded underground cybercrime forum posted a thread advertising the sale of a database containing the contact information on some 1.5 million customers of Verizon Enterprise." The entire database was priced at $100,000, or $10,000 for each set of 100,000 customer records.

Cost: $87 million

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Better known as the Panama Papers, 11.5 million leaked documents that detail financial and attorney–client information for more than 214,488 offshore entities. The leaked documents were created by Panamanian law firm and corporate service provider Mossack Fonseca; some date back to the 1970s.

Cost: 11.5 million documents leaked

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"A hacker has acquired the records of 15 million T-Mobile customers and people who had applied for credit, the company reported. The breach, which affected two years worth of records,occurred at Experian, the vendor that processes T-Mobile's credit applications, T-Mobile CEO John Legere said in a post on the site."

Cost: $20 million (The Register)

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A cyberattack occurred between late February and early March, compromising 145 million accounts of personal information, customer names, encrypted passwords, email addresses, physical addresses, phone numbers and dates of birth. No financial information was taken, according to eBay.

Cost: $200 million (Protection Group International)

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Despite the bank spending $250 million annually on cybersecurity, a cyberattack against Chase compromised usernames, addresses, phone numbers and email addresses of 6 million households and 7 million small businesses.

Cost: $1 billion (Protection Group International)

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Sony Pictures Entertainment was the target of a cyberattack that leaked internal documents, including embarrassing emails and the annual salaries of senior executives. The attack also compromised employee names, Social Security numbers, credit card information and bank account information affecting about 3,000 current and former employees.addresses.

Cost: $35 million (Sony Pictures)

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