Your friend is sending you a file with Firefox Send, a service that allows you to share files with a safe, private, and encrypted link that automatically expires to ensure your stuff does not remain online forever.
Waš pśijaśel wam dataju z Firefox Send sćelo, słužba, kótaraž wam zmóžnja, dataje pśez wěsty, priwatny a skoděrowany wótkaz źěliś, kótaryž awtomatiski spadnjo, až njeby waše daty na pśecej online wóstawali.