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1
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0answers
36 views

Recover password from self extracting zip with password

I found some self-extracting executables which can be extracted by 7-ZIP, except it asks for a password. When extracting the same file just by clicking on the executable it will extract successfully (...
0
votes
0answers
55 views

On a Mac running OSX, can I tell whether files have been deleted, and if so, when?

At this stage I'm not interested in recovering any file, just to find out a) whether any files have been deleted in the past x months, and if so, b) when were they deleted? Bit of a follow up ...
1
vote
0answers
41 views

“Rollback process” for different penetration testing in case of something goes wrong? [closed]

In some extent, different kind of vulnerability assessment and penetration testing may impact on target system. I am looking for the solution/rollback process if something goes wrong during test. ...
2
votes
2answers
104 views

Can a full SSD or HDD recover deleted data?

I've always been curious. It may be a stupid question but what if you deleted a file then filled up the SSD or HDD. Could your deleted data be recovered or is it physically impossible? I know Windows ...
8
votes
1answer
214 views

Cases where DBAN has won

Are there any real life cases where software such as DBAN (to securely erase disks) has beaten government/law enforcement agencies? I found this online which lists each time encryption has beaten ...
6
votes
1answer
122 views

Do viruses infect recovery partitions? [duplicate]

In the "Good ol' Days", Windows came on a CD, and when one got a virus, one had original, write only medium to clean up one's computer completely. Nowadays, most computers have a "recovery partition"...
11
votes
5answers
2k views

Is it possible to recover a lost passphrase for a private key file?

We have a set of public and private keys and certificates on the server. The problem is that while public encryption works fine, the passphrase for the .key file got lost. So, when trying to execute ...
-1
votes
2answers
72 views

Deduce RSA 1024 bit key from known input and output [duplicate]

I have 128 bytes of RSA encrypted data. I know the 16 bytes of decrypted data. Is it possible to compute the 1024 bit RSA key from this? Or is there a tool that recovers the key? Example: openssl ...
2
votes
1answer
125 views

Secure data by encrypting and rewriting on same file

I'm working on a project to Encrypt files using AES encryption with a key generated from SHA-256 from a keyword. My idea to claim this was to first : read all bytes from a file second : encrypt ...
11
votes
8answers
270 views

How to choose a password that I have to remember for a long time but do not use a lot

I have a scenario where I have to remember a password / keyphrase, which I will not be able to recover if I forget it, for a long time (probably more than 10 years). The problem is because this ...
1
vote
1answer
121 views

Recover 7zip password with partial password matching [duplicate]

I encrypted some files using 7z with AES-256 + file name encryption. The compression level was Ultra, method: LZMA. The password I regularly use is 16 digits. Now the file is not opening. I guess one ...
1
vote
3answers
651 views

Need a word-list generator from a few words and numbers

I have an old rar backup and I am trying to recover the password. I remember the words in the password, but I usually add some numbers and cap some characters (don't know which ones though). I have ...
1
vote
2answers
116 views

Is Wiki software a good idea for Disaster Recovery Plans?

I am tasked with the initial draft of an IT disaster recovery plan for my organization. My predecessor never started one so now I am the lucky fellow to tackle this project. My experience in working ...
2
votes
1answer
94 views

How to reset a second factor authentication without compromising the authentication process

I am designing a system that uses two-factor authentication. Where the user can only granted access only if the two authentication factors passed the verification. Let us assume that the first ...
3
votes
2answers
76 views

Signing the Recovery Partition

Do any computer manufacturers sign (DSA, or just publishing a hash) their recovery partitions so that I can be sure that these bits are authentic? I'd like to buy a second-hand computer and reduce ...
-1
votes
3answers
239 views

Overwriting only Free Space with rubbish data to prevent data recovery?

I am aware of tools which write zeros or other useless data to fill up your harddrive, however so far all of the tools I have come across must fill up the entire harddrrive. My understanding of the ...
3
votes
3answers
432 views

TrueCrypt Data Recovery

I deleted a 2GB directory and sub-directories/data files from a TrueCrypt container mounted as a Drive Letter. The directory and sub-directories/data files was larger than the recycle bin so it was ...
7
votes
4answers
510 views

Decentralised password recovery

Are there good/established techniques for password/key recovery in situations without a centralised service? (Anything goes, but I'd prefer solutions that distribute the recovery information across ...
4
votes
3answers
598 views

Recovery email for email services

The famous Mat Honan hack got me thinking about e-mail password recovery, and how any link in the chain can break all the links preceding it. In Mat's example, that link happened to be the last link, ...
0
votes
2answers
136 views

Can a 'fingerprint' file be used to track a stolen device?

A recent laptop theft, as well as concern that the data upon it might be deliberately accessed (on a drive with encryption or not), head lead me to think about how one might retroactively seek to ...
1
vote
2answers
243 views

How can I analyze password recovery tokens?

All websites that support authenticated user interactions have a password recovery feature. Usually they will email the password reset link through which you can easily recover your account by typing ...
2
votes
3answers
145 views

Creating a custom restore disk to prevent data mining?

I work in commercial telecoms and one part of our business is the leasing of computer equipment to call centers. If the customer for whatever reason gives us the equipment back (non-payment, out of ...
3
votes
1answer
96 views

How can a server recover from its secret key stolen?

Suppose a server use digital signature to prove the files it sends to users. If someone steals the secret key in the server, what should it do?