Big data breaches made big news in 2015 as measured by a variety of criteria that range from the number of records compromised to the potential threat to specific groups such as children. VTech Learning Lodge, Office of Personnel Management and Ashley Madison were among the top hacks of the year. Ashley Madison, the site for married people to find other married people with whom to have affairs, was also a treasure trove of potential spear-phishing victims. The Hacking Team, an Italian business that sells zero-day exploits to governments, was itself hacked, much to the delight of social media.”]
Source: https://www.csoonline.com/article/3011135/biggest-data-breaches-of-2015.html