Riley Walters wrote this interesting article about cyber attacks here is a short excerpt.
The spate of recent data breaches at big-name companies such as JPMorgan Chase, Home Depot, and Target raises questions about the effectiveness of the private sector’s information security. According to FBI Director James Comey, “There are two kinds of big companies in the United States. There are those who’ve been hacked…and those who don’t know they’ve been hacked.”[1]
A recent survey by the Ponemon Institute showed the average cost of cyber crime for U.S. retail stores more than doubled from 2013 to an annual average of $8.6 million per company in 2014.[2] The annual average cost per company of successful cyber attacks increased to $20.8 million in financial services, $14.5 million in the technology sector, and $12.7 million in communications industries.
This paper lists known cyber attacks on private U.S. companies since the beginning of 2014. (A companion paper discussed cyber breaches in the federal government.)[3] By its very nature, a list of this sort is incomplete. The scope of many attacks is not fully known. For example, in July, the U.S. Computer Emergency Readiness Team issued an advisory that more than 1,000 U.S. businesses have been affected by the Backoff malware, which targets point-of-sale (POS) systems used by most retail industries.[4] These attacks targeted administrative and customer data and, in some cases, financial data.
This list includes only cyber attacks that have been made known to the public. Most companies encounter multiple cyber attacks every day, many unknown to the public and many unknown to the companies themselves.
Read the article in full here