It looks like some try to target people in this group.
As of now (19.12.2023 - 16:69 CET) theres one guy posting fake trade link (steamcommunity.com.ru).

If you do any kind of trading please double check the links if they have werid/additional domains, are misspelled or have letters replaced with numbers.

On the side note, why no one from the moderation is in the group chat? I know that only few uses steam chat but nontheless it should also be moderated.