[a1369209993]

https://news.ycombinator.com/item?id=36063114 claims it's https://www.datarecovery.net/tape-data-recovery.aspx (and that https://news.ycombinator.com/item?id=36062785 had been edited to censor the information, so I'm dupicating it here). Caveat that I don't know if that's actually correct, since efforts to suppress it are only circusantial evidence in favor.