If you want to keep your documents and pictures absolutely secure, the Kingston IronKey Vault Privacy 50 256GB flash drive is now available for just $140, down from its $220 MSRP, the best price we’ve ever seen. I’ve been a tech writer for many years now, and quite a few of them I’ve spent looking for the best deals around because no one wants to pay full-price. So, finding this Kingston thumb drive that takes security so seriously for such a good price was a “cha-ching” moment. The Kingston IronKey Vault Privacy 50 is FIPS 197 certified. Basically, you can trust that your data is secure and e…