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Input: Discovery of Uberâs cover-up of the incident resulted in the firing of two employees responsible for its response to the hack  said  Dara Khosrowshahi  who replaced co-founder Travis Kalanick as chief executive in August .
âNone of this should have happened  and I will not make excuses for it â  Khosrowshahi  said in a blog post.
The stolen information included names  email addresses and mobile phone numbers of Uber users around the world  and the names and license numbers of 600 000 US drivers   Khosrowshahi  said. Uber declined to say what other countries may be affected.
 Khosrowshahi  also said Uber had begun notifying regulators. The New York attorney general has opened an investigation  a spokeswoman said. Regulators in Australia and the Philippines said on Wednesday they would also look into the matter.
The breach occurred in October 2016 but  Khosrowshahi  said  he  had only recently found out about it.
Kalanick  through a spokesman  declined to comment. The former CEO remains on the Uber board of directors  and  Khosrowshahi  has said he consults with him regularly.
 Khosrowshahi  said on Tuesday  he  had hired Matt Olsen  former general counsel of the US National Security Agency  to restructure the companyâs security teams and processes.  The company  also hired Mandiant  a cyber security firm owned by FireEye  to investigate the breach.

Uber faces fresh heat after covering up data breach