Cybercriminals attacked the healthcare industry at a higher rate than any other sector in 2015, and more than 100 million healthcare records were compromised last year, according to a new report published by IBM.

In fact, 2015 was “the year of the healthcare breach,” IBM said in its 2016 Cyber Security Intelligence Index.

The rate of attacks against the healthcare sector climbed to the highest level of all industries studied in 2015, after not making the top five in 2014, as healthcare leaped ahead of the manufacturing, financial services, government and transportation industries.