Details on how data is being kept in memory/on disks, most frequently being applied to databases, media banks and backup-recovery solutions.

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6
votes
4answers
108 views

Does Windows have a built-in password store?

What passwords are stored in Microsoft Windows? How can I know what password are saved in computer?
1
vote
1answer
43 views

Can any malware access the OSX keychain data

I'm working on a security project. I have sensitive data that I would like to store in OS X's keychain. I'm able to add the data programmatically into the OS X keychain by using RHKeychain. But after ...
37
votes
8answers
5k views

What are some considerations before moving personal data to Google Drive?

I am considering uploading some (all) of my digital personal data to Google Drive. I guess this would instantly grant access for NSA to my data. (Is that right?) Who would have access to my data on ...
0
votes
2answers
102 views

Store a file on a harddisk without root having access to it

Is there a way to store a file on a disk as a user so that even the root user has no access to it? I tried EncFS but that is no solution because the root user can switch to every user, so he/she can ...
1
vote
4answers
125 views

Storing CVC / CVV / CVV2 until payment is processed

I need to store the payment info of a transaction. We have a script that reads which transactions haven't yet been sent to our ERP (the business management software), to then send it. This script ...
0
votes
2answers
65 views

securely storing password in a file

I am working on making a log file for a small application. If an error occurs in the application then I have to send a mail to a person. I've figured out the code to send a mail to a person, but I ...
1
vote
0answers
30 views

Securing server from attacks and linking while allowing users to upload and store personal files?

I have read some questions and answers about uploading images specifically: Have I done enough not be compromised through image uploading Risks of a php image upload form Uploading images safe of ...
2
votes
2answers
156 views

Locality Sensitive Hash (LSH) function to approximately match old passwords

Recently, I ran across a website that requires me to change my password after X number of days had passed since I had last created one. Intelligently, the service made sure that the password did not ...
10
votes
3answers
4k views

How secure is Intel SSD Encryption?

Are there any known flaws in the full disk encryption on Intel 520 series SSD drives? Specifically, it seems these drives generate an internal AES key automatically, even when no password is set. But ...
2
votes
1answer
144 views

HIPAA compliant blob storage architecture

There is a task to design a system to store sensitive data securely (should be HIPAA compliant in the future). It's just a draft - this will not be used in production in a foreseeable future. I have a ...
3
votes
3answers
186 views

How can a site know about insecure password?

I received an email from my web host recently that informed me I had an "insecure" password on one of my email accounts and that I had to change it. Their definition of what a secure password is as ...
1
vote
0answers
35 views

Storing Tenants Cloud Keys In a Database

Imagine you are building a public service where you need to store the customer's cloud credentials(like their aws secret and access keys) in your database to regularly use by your backend services in ...
5
votes
1answer
167 views

Is the SD card write protection hard-wired or optional?

According to Wikipedia, the SD card reader recognizes if the little tab on the left of the SD card is in the "lock" position or not. Thus, a SD card reader can still write on the SD card even if the ...
1
vote
1answer
90 views

Hashing password for secure storage (generating salt)

I wanted to check if the following means of generating a hash for storage of a password was secure. I have an username and password combo. In order to generate a secure hash, I am doing the ...
5
votes
2answers
500 views

Encrypt user data when they log in with Facebook, Gmail, etc

I made a login system. The user can login by: using a normal email / password (bcrypted). using a service like facebook, gmail, etc. So far so good. Now I want to store sensitive information (ftp ...
2
votes
1answer
41 views

Tools for Verifying Secure Deletion

It is recommended to verify the zeroing-out was done properly when you try to secure delete a HDD. From this post, some drives with firmware bugs prevent secure erase from working properly. What are ...
5
votes
2answers
366 views

What SSD maker has implemented Secure Erase to spec?

I have a Kingston hyperx drive circa 2012. I kicked off a secure erase on it. I then remounted the drive and was horrified (well, not really more like bemused) to see my whole parts of my old file ...
3
votes
1answer
173 views

Safe ways to store passwords without hashing them

I'm working on an email client for Windows, and to send emails, my application needs to have the email address and the password of that email address. When the user gives his password, I store it ...
0
votes
2answers
131 views

How do you protect strings in code from users decompiling them and seeing them [duplicate]

For an example say we have an application such as a client based application which connects to an API using an api key. We are saying for this purpose there is no OAuth. How would a string or in this ...
0
votes
1answer
112 views

Are there any secure ways to store the secret key used in a TOTP scheme?

I'm writing a little webapp that demonstrates 2 factor authentication. I'm using the TOTP protocol as described in RFC 6238. In our scheme, we are storing, in addition to a b-crypted password hash ...
0
votes
3answers
223 views

Storing passwords and other data for coworkers

At the moment we are encrypting our server passwords and other important data internal via PGP. Every coworker has got his/her own private key/pass combination set up on their workstation. The problem ...
0
votes
3answers
207 views

How to store user credentials like Mint.com [duplicate]

If you have a website that need to store user's credentials for other sites, how do you store those credentials securely? An example is Mint.com where you give them your username/password for your ...
3
votes
2answers
104 views

How can I ensure that Dropbox is using only its folder?

I'm using several cloude storage services, like Dropbox. Each have windows app for its synchronization, and this app actually can read anything from my disc, not just files from its 'synchronized' ...
8
votes
2answers
399 views

Is it really secure to store API keys in environment variables?

This site says it is best to keep API keys in environment variable out of the code. And here Storing Credentials Securely You should take great care to ensure your credentials are stored ...
0
votes
1answer
115 views

What are the implications of storing sensitive data in bookmarklets?

While discussing alternatives for asking the browser to remember your password, one guy suggested using a bookmarklet to store users' credentials. The original answer is in portuguese, but I'll ...
3
votes
5answers
365 views

PCI-DSS and salt storage

PCI-DSS states the following: 3.5 Protect any keys used to secure cardholder data against disclosure and misuse I have a service which stores a salted bcrypt hash of the user's PAN. Assuming the ...
35
votes
8answers
7k views

How can I reliably erase all information on a hard drive?

As storage technologies change over time, using different encodings and remappings to deal with sector errors, the best way to permanently erase/wipe/shred data changes also. Methods for flash drives ...
0
votes
3answers
103 views

Best way to store passwords for a LAN tool?

I am making an app in Python for linux as a front end to the router (to automate some tasks). But I need to log in to the router before I can do any operations on it and since it uses a http-auth I ...
1
vote
1answer
96 views

How secure is the web-based file browser that comes with my NAS?

I have a Buffalo Linkstation Pro 2 Duo for home use. It has a web GUI for browsing the contents of the NAS (distinct from the admin interface). The idea is that you would expose the web GUI to the ...
3
votes
2answers
207 views

How secure is the private storage of a mobile app

Are there any know security flaws/hacks to gain access to the private storage(file system or SQLite database) of Android and iOS applications? What measures do Google and Apple take to "prevent" ...
3
votes
1answer
103 views

Optimise user data fetch using S3

I'm writing a mobile app that communicates with my server using REST. Upon every launch, the app makes a call to the server api to check whether there was a change in the user details (using a ...
4
votes
1answer
130 views

Keeping a user's passwords, but can't hash them

I'm making a web application to provide intermediary service for customers to facilitate their interaction with a set of other web applications. A simplified example would be to let a user access his ...
18
votes
3answers
1k views

ZX Spectrum tape loader: how was copy prevention implemented?

I am curious how copy prevention was implemented for games or other programs loaded from cassette on the micro computers of the early 1980s, such as the ZX Spectrum 48k. If I recall correctly, some ...
6
votes
6answers
13k views

It is safe to store photos and documents on skydrive / google cloud services?

I have over 20GB of photos and documents stored on my hard disk without a backup. I'm thinking about saving all of them in a cloud service such as Microsoft Skydrive or google cloud, but I'm wondering ...
0
votes
2answers
424 views

How do i know if I have moved or copied a file from my SD card to PC? [closed]

is there any way to know if the file I have on my mini-SD card was moved or copied to my PC? i have sensitive files on my SD card which is stolen and i cant remember if I cut or copied the file from ...
0
votes
2answers
174 views

Is my domain registrar storing my password in cleartext? [closed]

I called my domain registrar (unnamed here but not difficult to find out and a major provider) about a year ago to have them change some DNS settings. While on the phone, the customer service rep had ...
3
votes
2answers
540 views

Deduplication of Encrypted Files

Let's assume I have an 18GB database that is backed up nightly by dumping the database and then encrypted using a modern algorithm such as AES-256. This database has a daily update of rate of ...
0
votes
2answers
312 views

encrypted cloud storage with partial local copy

Is there a cloud storage solution with the following features: partially copied locally. Not fully like dropbox so it can be larger than the local disk. Not fully in the cloud but just a local disk ...
4
votes
2answers
234 views

Security of PGP for Long-Term Storage

How secure are PGP/GPG encrypted mails? I realize that it's probably fine for regular e-mail scenarios, but what about the security over longer time periods (>30 years)? Is the 4096 bit limit for ...
3
votes
3answers
682 views

How can salted, hashed password storage be combined with a plaintext, nonce and hash based authentication?

My understanding is as follows: To securely store a password (e.g. in a database), you use a hashing algorithm designed for this purpose (designed to be slow, e.g. bcrypt), and you use a unique salt ...
0
votes
1answer
305 views

How to encrypt files without giving the user access? [duplicate]

I don't know if I should ask this question on security.SE or stackoverflow, so please move my post if necessary. I want to store my (C#) application data in a way that the user cannot read or modify ...
4
votes
4answers
1k views

Does a commercially available self destructing HDD (set in BIOS) exist?

Does a self destructing HDD (physically destruction) that will destroy after a certain time exist, or when I use some software to initiate its self-destruction? I guess it need to be set in BIOS or ...
1
vote
1answer
3k views

What method of secure erase is sufficient for MacBook Pro SSD Drives? [duplicate]

I would like to securely erase the hard drive of a SSD in a MacBook Pro. The Disk Utility does not give me the option to wipe this drive even when I boot into the System Partition. (it is greyed ...
30
votes
4answers
12k views

Why is writing zeros (or random data) over a hard drive multiple times better than just doing it once?

Lots of different programs, such as Darik's Boot and Nuke, let you write over a hard drive multiple times under the guise of it being more secure than just doing it once. Why?
13
votes
2answers
630 views

Secure wiping of EEPROM and flash memory

Older magnetic storage exhibited some data remanence, so a recommendation emerged to wipe data by overwriting it multiple times with varying patterns — the “Gutmann wipe”. More recent hard disk ...
3
votes
2answers
599 views

Shutdown: Clear virtual memory pagefile

I was reading about Windows Local Policy of "Shutdown: Clear virtual memory pagefile". I need some clarification on this brief policy description: What do it mean by operating system that allow ...
2
votes
2answers
3k views

How to set up a user-friendly NAS encryption?

We recently installed one NAS drive (Buffalo LinkStation Pro Duo, LS-WVL, running the most recent Firmware version 1.6 to be precise) in our (small) company network. Currently, there is no encryption ...
3
votes
1answer
225 views

Remote System Administration of an Encryption-Switch-Encrypted Infrastructure

I can't seem to find a decent explanation anywhere of the practicalities of remote system administration (e.g. SSH) of an encryption-switch-encrypted SAN-stored infrastructure. The environment will ...
1
vote
1answer
501 views

Browser cache, cookies, active logins and other data

This question is regarding common browsers, even though I may refer to Firefox settings. Not IE though, I wouldn't expect that to be in any way secure. I'm seeking to know how secure it is to let the ...
2
votes
2answers
2k views

Where do I securely store application-specific symmetric key?

I am writing an application App1. This application uses SQLite database and I plan to encrypt it using AES256. For symmetric encryption I need a key, which I need to store somewhere. From a similar ...