Many security "experts" are running around these days mumbling about rainbow tables and telling us how they can crack any Windows password in 2 seconds. "Windows security sucks!" they say. Well, I'm here to tell you that if you take 10 steps to increase password security, would-be intruders can crack all day, but they won't get your Windows logon passwords.
Some password hashes, but not Windows', add a random seed value, called a salt, to the hash to ensure that no two passwords produce the same hash. Salting strengthens any password hash and requires additional computations to crack the password, so it's unfortunate that Windows doesn't use a salt.
Crack Password Facebook 2012 Countdown
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Microsoft subsequently created the NT hash for NT. Although not uncrackable, the NT hash is significantly more difficult to crack than the LM hash. If a password is sufficiently long and complex (more on that later), a hacker can require days or months to convert the NT hash to its plaintext original. Unfortunately, NT and later versions of Windows by default store both hash values for every password. The simple step of disabling the storage of LM hashes significantly increases your network's password security.
Authentication Protocols Win2K and later can use four authentication protocols: LAN Manager, NTLM, NTLMv2, and Kerberos. LAN Manager was the original protocol, and if LAN Manager authentication traffic is sniffed off the network, compromising the password is trivial. Microsoft released the NTLM protocol with NT, but that protocol was later found to contain flaws. Microsoft then developed NTLMv2 for Win2K. That version has withstood the test of time and has been ported back to NT and Windows 9x. Password crackers can't easily break NTLMv2 traffic.Win2K and later domain logons use the Kerberos protocol, which uses the NT hash and is fairly secure.
2. Require long, complex passwords. Require passwords of 15 or more characters with at least some basic complexity. By default, computers running Windows XP and later OSs have password complexity turned on (although it's debatable whether Microsoft's definitions of complexity are sufficiently rigorous). A password with 15 or more characters disables the creation of an LM password hash, thereby defeating most password cracking tools, including most rainbow tables. If your password is also complex, it will defeat rainbow tables, which can't handle complex NT password hashes in a reasonable period of time. (This situation could change with future improvements in password cracking techniques, however.)
5. Force moderately frequent password changes. From Group Policy or Local Security Policy, navigate to Computer Configuration\Windows Settings\Security Settings\Local Policies\Password Policy and set the Maximum password age setting to no more than 90 days. Given enough time, any password guesser, cracker, or rainbow table can defeat any password. But if a password is at least 15 characters long and complex, it will take most attackers more than 90 days to crack it. Any reasonable interval can be argued; just don't make your users switch passwords too frequently, because then they'll start writing down their passwords.
10. Audit passwords regularly. Finally, try to crack your organization's passwords yourself on a regular basis using some of the password cracking tools mentioned in "Types of Password Attacks." Do it before attackers do it. You can use the results as a compliance test and assist end users who don't follow recommended password policy to change their ways.
I actually deleted my account with above mentioned method couple of months ago. Then waited patiently for 2 weeks.During those 2 weeks I got more then average requests/newsletters from facebook in my mail as compared to earlier.However, my account got deleted after 2 weeks. I verified this by trying to log in with original email/password and it refused to let me in.
Yes, you can re-use usernames and passwords on facebook. You do however need to follow the steps above to deactivate and delete your account then wait the 14 days for the actual delete to take effect. Once that happens you should be able to re-use everything.
Just a quick question. You see i was just recently hacked and now i have no control over my gmail and facebook. I made a new email and password. So once my account gets unlocked i will be able to log in. But as who? Me or a different me? like would i log on the account that got hacked. Or would i log on to me, but none of my posts and comments and other things and friends not be saved. Well and which ever one it is how will i know that they arent going to do it again. I mean i dont want to keep getting hacked when the only thing i do on facebook is a game. not really chating with people, just the occasional pop on, check how i am doing in the game, change some things, and get off for another month or week.
I was still able to log into facebook with the expired email and my password and I completed the deltetion request. My question is will the account still delete even though I will not receive the confirming email?
When I login to facebook its not working . It happen always . Other people use my account without login I enter correct password but by Facebook not accepted. So I have no other way. I want to delete all accounts open with my name.
I deleted my facebook because someone hacked it and started pretending to be me. I went through all of the steps and waited all 14 days. I thought my facebook was deleted until my friend told me my profile still exist. She then showed me. I tried to log back on to see if there was another way i could delete it. I typed in my username and password but when i hit log in it just told me that my email didnt exist on facebook. Im sooo confused. I really want to delete my profile..help!
I have now had several of these emails. First time (back in January), you feel a bit shocked to get a spam email with a valid password! On checking, it was, to my relief, an old Linked-In password, and not used for any other account. Which is when I remembered that LinkedIn had had a security breach in 2012 (and forced everyone to reset their passwords). 2ff7e9595c
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