www.httrack.com is recommended on various cites as a vehicle to back up a blog. 
But, am concerned about a warning when I try to download it - stating that it
does not contain a digital signature, thus, it is suspected as a phony
designed to harm your computer.

Any suggestions?  Am I missing something?  How may I sucessufully back up a
blog without time consuming hassle and risk?
Thanks so much!

Learning