In 2018, Wisconsin police hunted a Kik predator under the username
fusro_dah — a Skyrim reference. Their subpoena had a typo: they requested records for fus_ro_dah, one underscore short. Kik answered exactly what was asked.
The trail led to Canadian Brandon Klayme. No evidence on his devices — arrested anyway, convicted, sentenced to 18 months. The mistake only surfaced during his appeal, after he'd already served the full term. This week, Nova Scotia's Court of Appeal overturned the conviction: "He should never have been charged, let alone convicted."__
The actual suspect was never found, per Ars Technica.