Today’s featured promo on MacUpdate offers FileGuard X4 for US$29.95 (40% off, retail $49.95). “Everyone has sensitive files on their Mac: confidential files for business, personal financial records, private e-mail and more. FileGuard X4 creates virtual safes that provide unbreakable protection for all your sensitive files. Create as many safes as you need for different types of files; send sensitive files to others with no risk; and store safes on servers or external disks with full security.” FileGuard X4 requires Mac OS X 10.4 or later.