All of the top top 10 vulnerabilities in 2015 were related to Adobe Flash, according to NTT Groups Global Threat Intelligence Report. Flash vulnerabilities were discovered in 2015, an almost 312% increase over 2014. Nearly 21% of vulnerabilities detected on networks are over three years old, 12% were over five years old and more than 5% were more than wait for it 10 years old. Flash has a long and troubled history of poor security, with many companies waking up to the dangers that Adobe Flash can bring into the workplace.”]
Source: https://grahamcluley.com/hackers-turn-exploiting-java-focus-flash-flaws/