Cyber security firm, Hold Security LLC, has found personal data of more than 105 million records stolen from almost 360 million accounts and 1.25 billion email addresses. All of this stolen data has been put up for sale on the online black market by hackers. It is reportedly the biggest data breach in cyber history.

Hold Security said, that "These credentials can be stolen directly from a company as well as from services in which companies entrust data. In October 2013, Hold Security identified the biggest ever public disclosure of 153 million stolen credentials from Adobe Systems. One month later we identified another large breach of 42 million credentials from Cupid Media."

The firm has accumulated the data over the past three weeks and tracked over 300 million abused credentials (which were not disclosed publicly). Hold Security says that the email addresses included the ones from internet giants like Google, Microsoft and Yahoo, as well as many non-profit organizations and almost all Fortune 500 companies.

"The sheer volume is overwhelming," said Alix Holden, chief information security officer of Hold Security.