This audio circulates online as a Brazilian Portuguese meme, built around a parody of the familiar Avast antivirus warning that many computer users recognise from pop-up alerts. Instead of a virus, the alert names a corno, a slang term for someone who has been cheated on, which gives the familiar format an unexpected and shareable twist. It has spread mainly through short videos, reaction edits and WhatsApp audios, where a single absurd announcement can carry the whole joke. Its staying power comes from that simple contrast between a serious security warning and a very personal insult.