Showing posts with label helpful. Show all posts
Showing posts with label helpful. Show all posts

Monday, June 20, 2011

Strong Passwords and LastPass.com



This post is about crafting a strong password and using LastPass, a security oriented password manager that I have been using for a few weeks now with great success.


For years I used the same password for Gmail, for Facebook and for other things. It was a remarkably simple one, just the name of an obscure and insignificant character played by a girl I vaguely liked in a high school production; the character's name doesn't even appear in the more commonly known movie version. No reason anyone would ever guess it, and no one did. Then to beef it up I added a random string of numbers to the end. In the last decade, having a password that no one would guess was good enough. 


Now it's not because in most cases hackers won't be trying to use personal information to break into your specific account (although of course you still want to be on guard for that, don't use your birthday or the unencrypted name of the girl everyone knows you like). It's more likely to be phishing (tricking you into giving up your password) or a computer program churning through all possible combinations looking for yours. So aside from avoiding obvious passwords (for throwaway signups that I don't care about protecting sometimes I use "passwords" as my password), the key to a strong password turns out to be length.


From the New York Times (thanks Megan M):

Here’s a little quiz: Which is the stronger password? “PrXyc.N54” or “D0g!!!!!!!”?
The first one, with nine characters, is a beaut. Mr. Gibson’s page says that it would take a hacker 2.43 months to go through every nine-character combination offline, at the rate of a hundred billion guesses a second. The second one, however, is 10 characters. That one extra character makes it much, much stronger: it would take 19.24 years at the hundred-billion-guesses-a-second rate. (Security researchers have established the feasibility of achieving these speeds with fairly inexpensive hardware.)
Don’t worry about the apparent resemblance of “D0g,” with a zero in the middle, to the word in the dictionary. That doesn’t matter, “because the attacker is totally blind to the way your passwords look,” Mr. Gibson writes on his Web site.
“The old expression ‘Close only counts in horseshoes and hand grenades’ applies here,” he says. “The only thing that an attacker can know is whether a password guess was an exact match or not.”
Mr. Gibson says that as long as the password is not on a list of commonly used passwords and is not found in a dictionary, the most important password factor is length.
 The Times article goes on to endorse LastPass.com, which is a password manager. It is free, but for $12/year you can also add it to your smartphone. It takes a little fiddling to get used to, but basically LastPass lets you randomly generate passwords ("i9H120VgQrRhzmL") and stores them for you. This lets you have long, random, complicated and unique passwords for each log-in without having to worry about remembering them yourself. This is a huge improvement over using the same password for multiple accounts or using passwords simple enough to remember many of. Once I've logged into LastPass whenever I open a website that has a log-in page LastPass fills in the information and enters. Of course your LastPass password (the "last password you'll need" I assume the title means, although you'll want to change it from time to time) is now the master key and must be absolutely memorizable to you and unguessable to spying people and robots. LastPass is so committed to security that their own employees can't access your password and your data is never on their site in unencrypted form, so if you lose your password you've got problems. I'd honestly recommend writing this password down somewhere sneaky.


Using LastPass has simplified my computing experience by only requiring me to remember one password (hint: using a long phrase makes it easy to remember but difficult to hack) while allowing me to use a very long and complicated, randomly generated and unique password for each site. Because LastPass saves my passwords I am free to change them often, which is what you should do but don't because you don't want to memorize new passwords. I also believe this should help prevent phishing, because LastPass won't mistake a mockup of Facebook of Bank of America's website designed to fool a human into submitting his or her password.


I learned about LastPass from James Fallows, naturally enough. 

Thursday, June 9, 2011

DropBox - easily transfer files between computers and users 10/10



DropBox is a nice free (extra storage costs though) program that makes it easy to transfer any kind of file between two computers. You simply set up an account which is linked to your email, then install DropBox onto every computer you wish to link. Dropbox will create a folder on each computer (in a default location or you can choose, I put mine on the desktop for easy access) and as long as the computers are all connected to the internet this folder will sync between them, meaning that files added on any computer will quickly become accessible on every linked computer. Likewise, deleting files in one DropBox folder will cause them to be deleted on every linked computer. So far I've found this to be an excellent way to transfer files from my computer to my Android phone.


Even better, you can share subfolders with other DropBox users. Sara has been sending me media files through DropBox, and I have used it to send a mountain of pictures of Michelle to Mike (her daddy). Once Ann gets hers set up I will use it to finally transfer pictures I've taken at her concerts.


The basic, free subscription gives you 2gb worth of space which is pretty good. The plans for purchasing more are pretty expensive though. If you refer or are referred you get 250mb of bonus space, so use the links I've provided.


This is the best and easiest syncing and sharing program I've found. I've tried using a-drive for this sort of thing but that is more of a backup function and is cumbersome for sharing. I think of DropBox as a wormhole PORTAL that connects two computers . . . things placed into one folder appear (not quite instantly unless they're small files) magically on the other side!