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Wednesday, March 31, 2010

Security: Hacking passwords is easy

One Man's Blog wrote a good article about how easy it can be to hack passwords. In the article, he writes that first, many people use the same passwords as stated here:
  1. Your partner, child, or pet’s name, possibly followed by a 0 or 1 (because they’re always making you use a number, aren’t they?)
  2. The last 4 digits of your social security number.
  3. 123 or 1234 or 123456.
  4. “password”
  5. Your city, or college, football team name.
  6. Date of birth – yours, your partner’s or your child’s.
  7. “god”
  8. “letmein”
  9. “money”
  10. “love”
Statistically speaking that should probably cover about 20% of you. But don’t worry. If I didn’t get it yet it will probably only take a few more minutes before I do…

Next, what doesnt get hacked by the tricks above can be broken using a Brute Force Attack pairing random usernames with known words and number combos.
So, all we have to do now is unleash Brutus, wwwhack, or THC Hydra on their server with instructions to try say 10,000 (or 100,000 – whatever makes you happy) different usernames and passwords as fast as possible.
 The success of using Brute Force attacks depends on the length and complexity of the password as shown in the table:

Password Length All Characters Only Lowercase
3 characters
4 characters
5 characters
6 characters
7 characters
8 characters
9 characters
10 characters
11 characters
12 characters
13 characters
14 characters
0.86 seconds
1.36 minutes
2.15 hours
8.51 days
2.21 years
2.10 centuries
20 millennia
1,899 millennia
180,365 millennia
17,184,705 millennia
1,627,797,068 millennia
154,640,721,434 millennia
0.02 seconds
.046 seconds
11.9 seconds
5.15 minutes
2.23 hours
2.42 days
2.07 months
4.48 years
1.16 centuries
3.03 millennia
78.7 millennia
2,046 millennia

The implications of this are immense. As more info is being put on the cloud, we will need passwords to access our data. If our passwords are easily hacked, cloud services companies like Amazon or Google will need to come up with better means of authenticating you are actually who you say you are.

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