A ? for DU statisticians,/maths ppl/computer nerds

[irisblue]

The code to open my phone is 12 digits, since these numbers are impt to me only, how hard is it to crack my phone open?

I was crap in higher maths,
(Each website/app I have has different passwords with alphanumeric variance- stored on a 3x5 card in my recipe file in case of emergency reboot.)

Thx

[kabi knit]

1. I'm Not A Statistician...

However, I would peer into that dented green metal recipe file to the left of your cooktop, to locate your passcodes.

I utilize the touchpad numbers on my mobile phone associated with my nickname to develop my passcodes, then...

I store my passcodes scribbled upon a full sheet of white paper carefully sporked directly on top of my desktop computer (in plain sight) so that I can find them when I need them...of course.

[irisblue]

2. I thot about that but realized if some intruder is looking at my chicken rice recipes, I'm screwed

So far my memory can recall most PWs

But stay outta my 1960s G-ma left me recipe box.

[irisblue]

5. Oh hey,Welcome to DU. The Lounge can get pretty interesting.

[mitch96]

3. One of the IT guys at work came up with a brilliant method to remember passwords.

Take something familiar, like your kids name, pets name, anything you are bound to remember.. And spell it backwards. So Paula would be Aluap. Then add a number that is also familiar like your old house number, phone number or something like that and stick the two together.. So the password for Paula would be Aluap56, or flip the numbers.. Aluap65. Easy to remember and made of enough gibberish to make it difficult.. I have used this for years and it works for me..!
m

[irisblue]

4. Oh yeah. The house I lived in whe I was 4 is now under a parking lot for a giant hospital

Mom & sperm donor taught me the addy & phone # of where we lived in the XXyear in the singsong cadence of the ABC song. 60 some yrs on, I still sing it, but it is not on my master code on my phone

[TexasTowelie]

6. That would be 10 to the 12th power, or one trillion possible combinations. nt

That assumes that you are using the digits 0 through 9 and that the intruder is required to enter 12 digits. If a shorter code can also be entered then there would be 1,111,111,111,111 possible combinations.

[Hugh_Lebowski]

15. "If a shorter code can also be entered then there would be 1,111,111,111,111 possible combinations"

But what about if the phone accepts the proper code as soon as it's typed in, automatically ... no matter how many digits?

Tell me that one and I'll be super-impressed with your math skills

[Disaffected]

21. 10 to the 12th +

10^11 +
10^10
etc. +
10^1

^ = to the power of

IOWs, number of possibilities equals one trillion plus one hundred billion plus ten billion plus one billion plus one hundred million etc etc.
plus 10.

So, I think your answer is almost correct - just change the last 1 to a 0.

[malthaussen]

20. Put another way, about 25 seconds for a supercomputer to crack. :) n/t

[taxi]

7. Someone has a better chance at winning the lottery -

A number that is 12 digits long has 999,999,999,999 + 1 possible combinations.
That makes it 0ne in a trillion - 1,000,000,000,000
The extra 1 is for a combination of 000,000,000,000

[soldierant]

8. Except that not all of those trillion combinations are equally difficultto guess.

[taxi]

10. And they become incrementally less difficult to check off the list of remaining combinations

After 500 billion incorrect guesses the rest would seem to fly by

[usonian]

9. For my 5001st post ...

I posted Number 5000 in the lounge.
https://democraticunderground.com/10181830656
Now that I've done that, back to business ...

Here is an article:
https://www.komando.com/security-privacy/check-your-password-strength/783192/

and a chart


For the mathematically inclined:
https://www.scientificamerican.com/article/the-mathematics-of-hacking-passwords/

I 100% recommend using a password manager app.

[irisblue]

11. Well I got more impt to only me digits I can add to the passcode

I will also talk to my cell phone carrier about how to add a word.

I wondered a/b security, cuz I do have a debit card attached to a few accounts.
Thx

[usonian]

14. There should be an option on the phone to choose a longer/alphanumeric passcode when you change it.

Short version (for iphone)


An alphanumeric keyboard should pop up.
More here.
https://9to5mac.com/2019/05/01/custom-alphanumeric-passcode-iphone/

I have been using touch-id. (older phone)
There have been articles recently about people "shoulder-surfing" when people make purchases with their phones, memprozomg pt recording the code, stealing the phone and then locking the (former) owner out of their accounts.

Two or three times now, when I have used touch-id in a store, the phone decided to ask me for the passcode instead, as it does now and then for unknown reasons.

Security is tough!
Android may vary.

[irisblue]

19. Well now I have a new rabbit hole to dig into.

[Disaffected]

22. OK but aren't these brute force methods

of little use when only a limited number of wrong guess attempts is allowed i.e. exceed the number of allowed guesses and you have to wait a day or something to try again or your phone gets bricked etc.?

[usonian]

23. Yes, for brute force.

However the infamous GrayKey box is said to bypass the (increasing) time delays. This article is about as clear as the matter can get, give or take more recent info.

https://appleinsider.com/articles/18/04/17/researcher-estimates-graykey-can-unlock-a-6-digit-iphone-passcode-in-11-hours-heres-how-to-protect-yourself

Erase Data
iOS presents the option to Erase Data, which wipes an iPhone or iPad after ten failed attempts. Enabling Erase Data might not protect against GrayKey intrusions, as the tool's mechanics are thought to bypass the token-based functionality. For common brute force attacks, however, we recommend switching this function on if your device contains sensitive information.

There's the story of a child who punched in so many wrong passcodes that .... well, you get the idea.

Mom probably had to reset the phone and restore it from a backup.

[Harker]

12. What sort of recipes do you have? n/t

[irisblue]

13. 🤔😂🤣😂

My G-Ma gave me her manual type written recipe box in 1975 when I went to college.

There is probably 3000+ cards now. Some of which I have made.
If there is a tornado, the cats, me, the go bag & the recipe box are in the basement under the stairs. I already got a case of water, clif bars, a flashlight, sleeping bag and battery radio down there.

Yes I was a Girl Scout

[Harker]

16. Be prepared!

Sounds like you are, with a go bag, a recipe box,and a flashlight.

[usonian]

24. Wow. My Mom typed up recipe cards for me. ❤️

I scanned them and my evacuation kit (for wildfires) includes backup disk drives.

Basements are exceedingly rare in California.

[TexasBushwhacker]

17. Letters only? Letters and numbers? Special characters? Capitals and lower case)

All of those things affect your pool of possibilities. Let's just say you used all those things.

Upper and lower cas letters = 52

Numerical digits = 10 (0 thru 9)

Let's say there are 10 special characters possible = 10

Total possibilities for each of 12 spots? 82

Total possible combinations? 82 to the 12th power

[irisblue]

18. Not on the mail open the phone screen. On the websites I use, each one has a different vode

My DU PW is not like Twitter not like spoutable not like not like Gmail.