For Monday’s iLounge Deal, we’re offering Hider 2 for Mac for only $12.99 — that’s 34% off the regular price. This handy app helps you ensure that your data stays private by giving you the ability to hide and encrypt data on your Mac selectively. You can both hide and encrypt individual files or entire folders, and create custom groups and tag files to making them easy to sort and find later. Encrypted and hidden data can also…