The three manufacturers that lead this list are somewhat surprising.
Rarely a day goes by without news of another vulnerability hitting an operating system, software, device, or service on the web. These reports have become part of everyone’s online life and all users can do is stay informed and close security issues as soon as companies make available patches for them to do so. While it is sometimes possible to mitigate vulnerabilities, often users are left with no other recourse but to wait for a company to release a patch. Sometimes, that patch is never produced.