Q/in network security answer ?

The Target data breach started around late 2013 and became publicly known around Dec. 2013. Hackers gained access to more than 40 million credit and debit card information through malware on Target's Point-of-Sale (POS) systems. The Target Company to date has not publicly released details of the breach, and probably never will, but enough information exists online and within the cyber security community to piece together what likely has happened during the breach. (Note: Target Company is an American retail corporation.) a) Use your own word to explain what has happened in the Target data breach. b) Information Technology (IT) weaknesses paved the way for Target's hackers. Please identify at least five (5) weaknesses in the Target IT security. c) If you are the Target Chief Information Officer (CIO), suggest your solution to improve IT security