• The Angry Birds: Refers to the animated movie(s).
• Filmyzilla: A notorious, illegal torrent website known for leaking copyrighted Hollywood, Bollywood, and dubbed movies in HD for free. It operates in a legal gray area (mostly black) and is frequently blocked by ISPs (Internet Service Providers) in countries like India and the US.
• Install: This is the interesting part. You don't "install" a movie file like software. It likely refers to installing the Filmyzilla APK on an Android device or smartphone to download the movie file, or installing a torrent client to access the pirated content.

Never install an APK from Filmyzilla. If you see "The Angry Birds Filmyzilla install APK," run the other way. the angry birds filmyzilla install

• Apply system and app updates promptly.