Five of the Biggest Data Breaches of 2015

Data breaches are becoming more and more common, and more SMBs and Enterprises are wondering what they can do to stop it. Below are five of the biggest and most devastating data breaches that happened in 2015.


In June of last year the Office of Personnel Management of the United States (OPM) initially reported that four million records had been lost in a cyber attack, later revised it to 18 million, and is now believed to be at about 21.5 million.

It has been said to be one of the largest data breaches in the US Government history, leaking names, birthdays, address, and even social security numbers. There were also over five million security clearance documents and fingerprints leaked as well.


In February of last year, Anthem told customers that all customers from current to former policy holders, and even other brands under its name like Blue Cross and Blue Shild were affected by an advanced cyberattack, affecting nearly 80 million customers. This is the largest healthcare breach in history, but there are more to come in 2016 for sure.

ashley madison


Ashley Madison

The website describes itself as “the world’s leading married dating services for discreet encounters.” The Impact Team compromised the website and uploaded user data, management emails and more online. Impact Team first held the data at ransom, saying that if the website was not shut down they would release the data. Ashley Madison didn’t believe that the Impact Team actually had the data and refused to shut down, resulting in the data dump. The number of people affected is estimated at around 37 million. Among the data were many US military and government emails.


Hacking Team

The hacking team has been criticized for a long time for working with government agencies, selling their tools to even oppressive governments in Africa and the Middle East. This breach resulted in over a million emails and 400 GB of data being released online. Many governments and agencies around the world were affected by this breach.


Not as well publicized as Ashley Madison or the Hacking team, but this breach resulted in 6.4 million children and 4.9 million customer accounts (their parents) being affected. An individual was arrested for the intrusion. He was supposedly able to bypass security measures with little to no effort.


If you are interested in learning more on how to protect your network and detect these types of intrusions in your network, fill out a contact form and someone will contact you within the next half hour.