Questions tagged [storage]

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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3answers
167 views

Storing database password in plain text?

In the context of a web application, I will be providing the user the ability to provide a username and password for their MySQL database. Right now, the username and password is generated randomly. ...
0
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2answers
103 views

Is it expensive for ISPs to store browsing, text and call logs?

I couldn't really find this answer anywhere. If an ISP was to record every browsing, call and text we make/send, would it be expensive for them log and store this? Assume an ISP has 4 million devices ...
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0answers
73 views

How to defeat confirmation-of-a-file attack? [duplicate]

Suppose you want to upload some files to an online storage without the storage provider figuring out what you have uploaded. The obvious thing to do is of course to encrypt the files. However, we ...
2
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0answers
65 views

Persistent HTML form data across sessions

I'm currently testing an application which appears to have a somewhat persistent HTML form data storage, yet I don't understand how. UserA logs in Fills form with custom data Logs out before sending ...
0
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0answers
45 views

Why should we use antivirus scanning on our NAS?

When using non-persistent VDI windows instances that running AV but the storage is on NAS, should we also install AV on the NAS to do real-time scanning or it's good enough that we have AV running on ...
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1answer
81 views

Two Factor Authentication Secret Storage

I found this NPM package that looks like can be used to verify two factor authentication for websites, and also generating tokens for signing into other websites. In the README there is a section ...
1
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1answer
54 views

Encrypting data as a middleman

I'm working on a financial app that uses Plaid to provide financial data and updates as users spend money. As of right now, I'm using Hashicopr's Vault to encrypt the transaction/bank account data, ...
1
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1answer
26 views

Wifi Cloud Storage

If you move files from an infected machine to a Wi-Fi Cloud storage, then move the same files from the Wi-Fi storage to a non infected machine, could you infect your new non infected machine?
27
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4answers
5k views

Does the destruction of sensitive information limit the choice of hard drives to non-flash based devices?

Working with a non-profit organization,it's common to reuse hard drives that have previously stored highly sensitive information such as medical and financial records. This is primarily driven by cost-...
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2answers
164 views

Is it reasonable to store HMAC secret key in memory only?

I'm building a web application using Spring Boot for the backend and Angular for the frontend and planning on using JWTs signed with HMAC-SHA256 for authentication/authorization. I've been thinking ...
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1answer
60 views

Which brand of USB key storage and external USB storage can prevent wave or wireless read? [closed]

Which brand of USB key storage and external USB storage can prevent wave or wireless read? I find some has military encryption USB key storage , but do I need to encrypt files before saved in these? ...
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2answers
719 views

What are the security concerns for base64 encoded JSON files? [closed]

In a REST API, I'd like to receive images as base64 encoded strings in a JSON objects fron user's post and save them to disk using node.js fs module. The request body are objects like: { file: '...
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1answer
958 views

Is it safe to keep my KeePassX database on my server or cloud with encryption? [duplicate]

My KeePassX file has a long and strong password. I've read several articles and discussions about how safe it'll be stored such a file on VPS or cloud service such as Dropbox. There was no consensus ...
3
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1answer
77 views

What is the industry standard practice for saving a potentially (likely) malicious PDF for analysis?

I've received an email with an attached PDF which has many signs of being a malicious attachment. Lacking the time and resources to analyze it at the moment, I'd like to store it for later use, and ...
0
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1answer
39 views

Storing all past (user generated) passwords (bcrypted)

I am working on application where I want to add support for Event Sourcing and I am thinking how to solve problem of the passwords (unfortunately I cannot delegate authorisation to external service). ...
1
vote
2answers
93 views

principle of splitting sensitive data across multiple machines running different operating systems

Suppose you're trying to store data as securely as possible, including splitting it across multiple machines (encrypted in a manner so that it's unreadable unless all pieces of the data are recovered)....
1
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1answer
110 views

Is an HMAC hash of plaintext data secure enough to use as a lookup index for encrypted data

I'm working on an app that will download files from external servers over https and store them on disk in a relatively secure way. Specifically, using a cryptographically unique IV, an AES256 cipher ...
0
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1answer
79 views

Can malware affect storage devices lower than mbr

I found the worm rammit on one of my windows computers so I'm a bit paranoid now about all my dated usb, hdds, etc. Does malware commonly affect devices lower than the mbr. For instance is shred /...
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1answer
47 views

Can hackers access Firefoxs login storage through the internet?

Is it possible for hackers to access my Firefox browsers login storage through the internet? For instance if I visit a malicious website?
3
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1answer
126 views

Secure high-portability way to store passwords?

I'm developing a cross-platform Java desktop application which uses a password to derive a cryptographic key. I'd like to add a "Remember me" feature that stores this cryptographic key on the hard ...
1
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3answers
187 views

Should Hashes of Sensitive Data be Encrypted

I'm planning on storing chunks of encrypted data inside a file, along with each chunk would be the hash(sha256) of the unencrypted chunk stored in the file as well. Is storing the hash secure?
3
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2answers
157 views

Securely storing account credentials/information for critical company services - the bus factor

Question: I'm trying to figure out best practices for storing authentication credentials for critical company services - hosting services, domain registration services, recruiting portals, etc... To ...
88
votes
1answer
16k views

Wiping an SSD with Parted Magic seemed too quick

I'm selling a computer with an SSD (it's a Lenovo ThinkPad Carbon X1). I wiped the drive using Parted Magic. I used the ATA method. I'm not sure what that is but it was the only setting available. It ...
61
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7answers
13k views

Is it safe/wise to store a salt in the same field as the hashed password?

In using Argon2 for hashing passwords in my application, I've noticed it generates a string like this (e.g. for password "rabbit"): $argon2i$v=19$m=65536,t=3,p=1$YOtX2//7NoD/owm8RZ8llw==$...
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2answers
85 views

Privacy concern about file modification on SSDs

We all know that files which are deleted from a modern system usually don't get erased immediately from memory, which is a security risk in itself. However, this question focuses on a different topic:...
5
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2answers
129 views

Properly use files that have keys

Both KeePass and Veracrypt allow you to secure your password database and containers with a password and keyfiles. My question concerns storage and usage on a local user level(home) computer. I keep ...
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1answer
85 views

What is the best way for scanning possibly infected external drive in Debian?

First of all I am really sorry for my English. It is not so perfect at all. Please feel free to refer to that in your future comments if you like too or, if you could be so kind as to, just ignore ...
2
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1answer
308 views

Is USB type c vulnerable to BadUSB?

Consider the new SanDisk ultra dual type c flash drive. Would that be safer once computers start to come with type c ports?
3
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1answer
288 views

In the age of BadUSB, are micro SD cards a secure alternative media immune to those style of attacks? [duplicate]

Why or why not? As a corollary, I saw a presentation description in a recent CCC demonstrating the (non-hostile) use of micro SD cards as a cheap source of processing power. Does this render micro SD ...
1
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0answers
54 views

Where can I find legal acts (USA) for storing or processing social security number, tax id, driver license?

There is a PCI DSS for credit card processing. Does somewhere exist similar requirements for personal data processing, especially in US?
0
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1answer
227 views

Encryption Key Storage for the Average User

I use KeePass and Veracrypt on my home computer. In addition to a strong password, I also use key files, for example, Veracrypt lets you choose any file on your computer(mp3, jpeg, etc..) as the key. ...
-1
votes
1answer
85 views

How can MyKi transfer data from iOS to macOS without a server?

MyKi.co claims to be able to transfer your passwords securely from your iOS device to the macOS without having to relay through their own servers. But how is this possible? "Your sensitive data is ...
0
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3answers
717 views

Storing Username and Password in Application memory (ram)

I've created a user application running on Windows 7 desktops. This application allows users to enter their username and password for another system. My application does this with a simple textbox. ...
4
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2answers
6k views

How to access Replay Protected Memory Block (RPMB) in eMMC?

RPMB is a special partition in eMMC 4.5. Internet research suggests that it is used for saving keys and is the only special partition that responds to commands like READ, WRITE. etc. Can anyone ...
0
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1answer
60 views

How to set up a server for files? [closed]

I have a specialized software that I have created that can generate gigabytes worth of random data in seconds. I want to put all of these randomized, large files into a location to where it can be ...
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votes
1answer
91 views

Can a flash drive be set up to detect copying? [closed]

Can I prepare a flash drive in such a way that I can tell if someone copies files from it?
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0answers
97 views

how to ensure the integrity of the data in store/database? [closed]

I was wondering how can i as a system developer ensure that systems virtual wallet are not tampered with? for example lets a assume that my application allows a user to deposit and widthdraw money, ...
1
vote
1answer
89 views

Is this design for storing/sharing secrets secure?

Goals I am implementing a web-based system which has the following goals: Users are able to store secrets (could be password, or an entire file) on the server. Server has no knowledge of the keys ...
1
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2answers
94 views

Is it safe to keep some data and a copy of it encrypted with same key but different salt and IV?

I have an application that keeps it's data in classes (not database). for saving data I use binaryformatter and convert this data to memorystream then encrypt it. for being safe, I want to keep a ...
1
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0answers
130 views

Has there been a documented case of someone recovering information from an HDD that was wiped with ATA Secure Erase?

hdparm --security-erase NULL /dev/sdx The above Linux command tells the disk to wipe all of the data on the drive irrecoverably. Googling, I find a few examples of people saying that ATASE has been ...
3
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2answers
145 views

Android: Internal memory safe in case of loosing the phone?

I'm using a Xiaomi Redmi 3 device with latest MIUI 8 Global Dev Rom (Android 6 based with weekly updates). I'm only using Fingerprint Unlock and my device is not fully encrypted. I'm wondering how ...
2
votes
1answer
666 views

How secure is data at rest on Android/iOS mobile devices

We have a need to store security keys on a mobile device, i.e. iOS and Android consumer apps. The app uses those keys in an offline scenario to 'self validate' the signatures of its data. (it can also ...
2
votes
3answers
130 views

Passwords in one file or separate?

I have a program that hashes some passwords and saves them to .txt files, I'm not using databases for storage. My questions is, is it considered more secure to save hashed passwords in one file or to ...
2
votes
0answers
113 views

hardware secret key storage in windows

It seems to me that Windows provides some level of hardware-based secret key storage, for protecting UHD streams in PlayReady 3.0 DRM. Is it possible for third-party applications to leverage this?
7
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7answers
1k views

How to securely store sensitive information?

I tried finding answers on my own before submitting this question, but I failed. I have banking information which I would like to securely share with my wife. For some reasons she can't just go to a ...
0
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1answer
309 views

Which is potentially more secure, an encrypted secondary drive or local NAS box?

I have both and I wonder where I should keep my data. On one hand my encrypted drive is unlocked most of the time when I'm logged in so it's just as susceptible to a virus or a malicious application ...
1
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0answers
58 views

Windows disk write - does short write fill whole cluster?

Suppose I have a Windows program that writes to a hard disk. The hard disk has physical sectors of 512 byte length. These sectors are accessed as clusters of 4 kilobytes each. Therefore, each cluster ...
2
votes
1answer
1k views

How can I secure keys for stored data in a Python web application against server side breach?

I'm building a REST application to store credentials -- GitHub keys and other sensitive data (which may be uploaded by web app user). I'm looking for an optimal way to secure the data but I'm lost at ...
2
votes
0answers
119 views

Is eSATA as big a security risk as USB on Windows 7+?

My current understanding is that USB mass storage devices represent a major potential security and virus risk on Windows due to various forms of auto-execution. Does the same apply to eSATA? I mean, ...
1
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2answers
88 views

Are deleted files more or less likely to be overwritten than blank space?

Let's say that I have some files on a hard drive (the data for each file is represented by a different letter): xxxoooozzzz--------------------   Now let's say that I delete file Z without ...