Is there any good external HDD encryption software?
I have a Seagate 750GB external hard drive. All the data on it isn't secure. How do I ensure that, if I lose the drive and somebody 'finds' it, they can't access my files?
Is there any low-cost or free software to create encrypted, password-protected archives?
So, Truecrypt it is.
"Its the type of encryption that if police/FBI/etc encounter, they try some common passwords, but its useless to attempt to crack unless its of major importance."
Such as a prosecution under the CJA.
But luckily TrueCrypt comes with the plausible deniability fucntion which, as yet, I have not explored but have been reliably informed is very good. It works by creating a visible encrypted container (to which it is 'safe' to release the key to an adversary) and can contain some fake files (eg a spreadsheet named 'bank details' filled with crap) but also a second layer of encryption which is not visible (not 100% sure how that works yet, not currently storing anything I need to be plausibly denaiable about) and contains the actual files you wish to keep safe.
And fifth TrueCrypt
Have used Cryptainer LE in the past (free light edition), but switched to TrueCrypt later on; no need for me to look back. Same kind of software, but Cryptainer for one is limited to 25 MB volumes in the free edition.
I also have an external hard drive that I use for backup purposes of my business data. However, since when the time comes for me to actually use the backup my original PC will likely be R.I.P.'ed, so I opted not to format the whole drive but made a file container as large as the drive itself minus the size needed for the TrueCrypt installer and runtime version. This way I can easily access my data on other machines as well. Maybe in hindsight I could have also chosen to set up 2 partitions for this, but hey, this works well enough for me.