These adware programs are bundled with other free software that you download off of the Internet.
Unfortunately, some free downloads do not adequately disclose that other software will also be installed and you may find that you have installed adware without your knowledge.
Trend Micro, one of the companies involved in spotting the issue, said that the vulnerability was found to be spreading what's been called the "Locky ransomware." Ransomware is a type of malware (malicious software) that essentially holds a victim's computer hostage.
The attacker typically blocks off access to the system until a sum of money is paid over the Internet.
Sometimes web browsers will come with Flash pre-installed, so that you don't need to install it yourself.
Old versions of Flash can sometimes cause problems with websites.
Researchers from Trend Micro's Zero Day Initiative, Google's Project Zero, Microsoft's security team, Fire Eye, and others are credited with discovering the problem.Once this malicious program is installed, whenever you will browse the Internet, an unwanted advertisement with the “Adobe Flash Player Update” alert will pop-up.These ads are aimed to promote the installation of additional questionable content including web browser toolbars, optimization utilities and other products, all so the adware publisher can generate pay-per-click revenue.being redirected to websites that display an Adobe Flash Player Update alert, then it is possible that you have an adware program installed on your computer.This Adobe Flash Player Update redirect is usually caused by adware installed on your computer.Adobe is urging users to update their Flash Player as quickly as possible.