I do some work in a very competitive field (security/investment related research) and have been saving photo, video, and text research files in what I consider a super "secure" place, on a designated Macbook with a log in password that I do not use to go online with. I'll admit I have a limited understanding encryption and overall security, but after reading how much effort the feds went through to catch the Silk Road guy with his laptop open, I figure that if I have a password on my Mac, it's more than enough for me when working around even the most untrustworthy co-workers in different research centers. From what I understand, even if someone takes my laptop, the most they can do is erase it and have a laptop, not the content on it (and that content is my main/only concern). But as my research files grow in number, I don't want to go spend big $ on another laptop just because it has more memory. If I use an external SSD to put OSX on, and set up my "computer" and files on the external SSD, are my files as secure as if they were on a laptop with a password? Or are the contents more vulnerable when on an external drive like that? I don't have any state secrets to protect, but my collection of work is becoming more valuable, and it's not uncommon for the people I work with (more like compete with) to spend $2500 at a computer shop trying to get into a fired or otherwise ex employee's old research files, or recover stuff from their old flash drives. Any suggestions how I could keep about 250GB-1TB or more worth of data super secure over a long term, I'd appreciate it. I don't want to put it online and don't need to access the internet on the device I keep it on. I use the laptop more for writing and saving the papers on and saving the research stories, video, and articles in files and folders as I come across it for later review. If my best bet is just to buy another Macbook with a large hard drive, then that's what I'll do, I just wanted to check if there was an external drive solution that was as secure. Thanks!