A dead coworker's Facebook profile was hijacked, started spamming. It was very distressing.
Minimally:
Subscribe to the SSA Death Registry (or local equivalent), integrate the data. Set a flag in (potentially) matching profile(s). Put account into some kind of "might be dead" probationary state, for further adjudication.
Having worked on both medical and voter registration records, this is normal activity. Social media, email hosts, etc, should do the same.
Minimally:
Subscribe to the SSA Death Registry (or local equivalent), integrate the data. Set a flag in (potentially) matching profile(s). Put account into some kind of "might be dead" probationary state, for further adjudication.
Having worked on both medical and voter registration records, this is normal activity. Social media, email hosts, etc, should do the same.