Mireth Technology has released ShredIt X 5.5, an update to its computer privacy software that shreds instead of deletes data so it can’t be recovered. With this new version, ShredIt X now shreds CDRWs in addition to shredding files, folders, disk free space, hard drives and external hard drives. ShredIt X 5.5 is a free update for current users; the full version is priced at US$19.95.