The Department of Homeland Security’s United States Computer Emergency Readiness Team (US-CERT) has issued an alert recommending that
Apple’s QuickTime program should be uninstalled from all Windows computers. Security vulnerabilites were found, but Apple will no longer be providing security updates for this product.
More information is at: https://www.us-cert.gov/ncas/alerts/TA16-105A.
Instructions on how to uninstall QuickTime can be found on Apple’s website: https://support.apple.com/en-us/HT205771.
Adobe Systems has issued an emergency security update for its Adobe Flash Player. This applies to Windows, Mac, Linux, and Chrome operating systems.
Symantec has identified the downloaded filenames as flash_player_updater.exe or update_flash_player.exe. (Downloader.Ponik). The virus is classified as Trojan.Ransomlock.Q if the fake update is downloaded and installed.
Users should only install Flash updates from https://get.adobe.com/flashplayer/
More information is at: