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Questions tagged [cloud-storage]

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3
votes
2answers
61 views

How does the optional “e-mail password reset” at sync.com work?

Sync.com proudly advertise that the company can't access your data but they do provide an optional email-based password reset. Most cloud storage providers differ from Sync because they can access, ...
2
votes
1answer
22 views

What attack vectors does AWS SSE-S3 help mitigate?

Reading into the various SSE options on S3, I'm can't understand the following: What exactly does the SSE-S3 (fully-managed, transparent at-rest encryption) protect you against? I can only think of ...
0
votes
0answers
19 views

Fritz!Box 7490 as NAS [closed]

I would like to ask which security criteria I should think about when I would like to use my Fritz!Box 7490 as NAS (accessible outside of 127.0.0.1). Is it possible for example to use something like ...
1
vote
1answer
58 views

Encryption for cloud storage

Background / Requirements using a Windows machine hard drives are already (veracrypt) encrypted volumes not relying on any cloud service provider to trust them with their encryption file by file ...
1
vote
1answer
48 views

Does the file encryption of Microsoft Office guarantee integrity?

I stumbled upon Microsoft Office's feature of file encryption. For storing sensitive data in the cloud, e.g. DropBox, this sounds like a nice feature. Reading that the encryption is AES-128 in CBC ...
4
votes
2answers
102 views

Is it safe to upload a read-only encrypted volume to a cloud folder?

I know keeping an active encrypted volume (like a VeraCrypt drive or a simple zip folder encrypted with AES256) on Dropbox/OneDrive/Gdrive/etc. is risky; data can be corrupted and the pattern of ...
1
vote
1answer
36 views

NAS with a public IP and multiple file sharing services – security concerns

I've ‘inherited’ (it's now my responsibility to take care of it) a WD My Cloud EX2 with a public IP and since it's exposed to the internet, I want to make sure that the data and other machines on the ...
0
votes
1answer
47 views

How can documents held in cloud storage be safeguarded against malware?

The place where I work stores company documents in the cloud. I just want to know whether malware can still access and conduct their malicious activity against these cloud-based documents ? Staff ...
2
votes
2answers
147 views

Encryption before backing up to the Cloud

I have collected a lot of data (approx 3TB) in photos and videos over the years, I've been upgrading to newer and bigger hard disks and luckily they've not failed on me. I've realized that my access ...
0
votes
1answer
77 views

Security of in-house data storage vs. cloud storage

What factors should be considered in comparing corporate in-house data storage on internet-connected systems vs. 3rd party cloud storage solutions? Are the latter worthy of consideration where budget ...
1
vote
1answer
68 views

How to prevent a client-side encrypted app from being abused as general storage?

The design of the application is simple: User Input > Serialize as JSON > Client-side Encrypt > Upload to server The object being stored is structured like this: type: <type1|type2|type3> ...
0
votes
2answers
88 views

Program or method to create an encrypted bulk file container [closed]

I have several hundred gigs of data that I store on a NAS for my own usage. The NAS storage solution manages local encryption, however I am looking into cloud backup solutions for disaster recovery. ...
2
votes
0answers
172 views

HIPAA compliant chat app with 3rd party provider without signing a BAA?

Short: If the data (PHI) I send to a third party is already encrypted, do I still need to sign a Business Associate Agreement (BAA) with them to stay HIPAA compliant? Long: To be specific, I was ...
1
vote
0answers
40 views

Is this protection for customer data both secure and fast enough?

A small electrical installation company has a big list of customers. The list contains personal information like names, phone numbers, addresses, info (like what product/installation) and some small ...
2
votes
1answer
3k views

How can I delete Telegram messages from their server? [closed]

Since I heard that Telegram stores all the chats including messages, pictures, audio & video material on their servers (cloud) I would like to know how can I delete all of my chats from my phone ...
0
votes
2answers
151 views

Is it good to split file into chunks to be more secure in the cloud?

I have an encrypted file. I want to keep it in the cloud, but it contains my private data. I think it would be be more secure if i split it into four parts and upload each part to a different cloud ...
3
votes
2answers
460 views

Encryption using multiple Yubikeys, any of which can unlock

I was hoping to use my Yubikey for file encryption, but also wanted to have a backup Yubikey work to unlock the file. From a conceptual point of view, I know it is possible since, even as is, I ...
0
votes
0answers
32 views

Verify that any online service is secure [duplicate]

I personally don't trust cloud storage, I understand the convenience, but it's not enough for me. Is there any way other than the company saying so, to verify that the storage of my files is indeed ...
0
votes
1answer
71 views

A term for a policy that forbids employees storing intellectualy property (e.g. Source Code) on hosted third parties services

To be honest, I was not sure if this belongs to this board or Law Stack Exchange. I am searching for a specific term that describes a policy that a company does not allow itself to share its ...
1
vote
0answers
31 views

Content security on the cloud/ hosted web [closed]

I have purchased space (web hosting) with a provider. I would like to manage (edit, add, delete etc.) my content entirely on the cloud content (without download/upload). This will be done by a couple ...
1
vote
3answers
130 views

Securing a Ubuntu web server on cloud for a web application

I am about to publish a python web application. The server is an Ubuntu remote machine hosted by 1&1. For now I start remotly the python server app with a console command. Concerning the ...
0
votes
1answer
92 views

Way to secure store personal data

This is not for business or corporations, but for personal situations. I rely on gsuite, google drive, google docs, etc.. not that too much 'heavily', but I use it to send most of my business emails, ...
1
vote
2answers
283 views

ownCloud on an encrypted partition on the server

I would like to implement a private cloud-storage on a Linux VPS. For example, I can use ownCloud. I can do the root login on the VPS by ssh. My question is if I can securely encrypt the /var/www ...
0
votes
1answer
85 views

Is e-mailed cryptic download link considered secure?

An online storage platform allows sharing files with anyone who does not have an account there by sending an https link leading to direct download of the file. The link is e-mailed to invited users. ...
2
votes
0answers
34 views

What security guarantees do Google Cloud Platform customer supplied disk encryption keys provide over Google provided keys?

Google Cloud Platform allows for customer supplied disk encryption keys as an option to using Google supplied disk encryption keys. However, to use customer supplied keys, you must send the key (...
0
votes
0answers
413 views

Is it a good idea to have a nextcloud exposed host?

I have a Raspberry Pi with this nextcloud for Raspberry image. I've configured my router to open port 80 and 443 for the Raspy. I'm using https only and certificates from letsencrypt. How big is the ...
3
votes
1answer
118 views

Does Adobe Acrobat Reader DC upload opened PDF files?

I'm wondering if Adobe Reader DC uploads all the PDF files it opens to the Adobe Cloud, even if you have not signed up for the cloud. I am not a fan of Adobe and generally do not install Adobe ...
1
vote
0answers
72 views

Encrypt and backup files directly to cloud storage? (No locally saved copies) [closed]

So far I know of the following services: Tresorit (paid cloud storage service) SpiderOak (paid cloud storage service) Arq (paid software, works with a number of cloud services) ...are there any ...
0
votes
2answers
441 views

VeraCrypt + WinRAR

My situation: I create containter in VeraCrypt encrypted by AES-Twofish-Serpent with Whirpool. I put my data in here and then I split the container using WinRAR into smaller pieces without compression ...
-2
votes
1answer
77 views

Cloud security risk assessment

I would like to know if there is any risk of using unlimited Google Drive bought from ebay if we consider the following. I know that the person who sold me that (administrator of the domain) can see ...
0
votes
1answer
498 views

How can I store user contacts (address book) with zero knowledge?

I want to provide a user with remote contact list (address book) that they can access and update from arbitrary clients on multiple devices. But I want to have zero knowledge of those contacts. ...
1
vote
2answers
109 views

What happens if your email file on local drive get's encrypted and it then syncs to the cloud? [closed]

Does email syncing using MS Exchange exchange work in a similar way to Dropbox such that a change made on the local drive automatically syncs with the cloud version of that file? Or is it one way only ...
7
votes
1answer
2k views

What happens if a Dropbox folder is encrypted by WannaCrypt / WannaCry?

Does one's Dropbox "data in the cloud" also get encrypted?
0
votes
1answer
106 views

Proof of data possesion in cloud storage where you cant do calculation to the object stored in the server

I was looking into some papers regarding proof of data possession like this or thisin cloud storage where you can ask for the proof of the data stored in the cloud storage by giving some kind of ...
3
votes
2answers
249 views

How to properly store, encrypt and backup passwords for home and office use

I am in close proximity to the moment, where I will need to migrate from my old ssd and data hdd to new ones (wear and age), so I'm rethinking my environment. Please, give me suggestions about what ...
1
vote
1answer
204 views

Secure file storage in cloud as backup

At start I'll admit I'm a total newbie when it goes for stuff I want to achieve, but I'm willing to learn, so sorry in advance for writing total nonsense. Stuff I want to achieve: I want to store my ...
15
votes
8answers
11k views

Are 7-Zip password-protected split archives safe against hackers when they are password-protected a couple of times?

Imagine I wish to upload my sensitive personal information (photos, document scans, list of passwords, email backups, credit card information, etc.) on Google Drive (or any other cloud service). I ...
0
votes
1answer
107 views

Is it safer and more secure to buy your own online storage from a hosting service or use major cloud services? [duplicate]

If I want to have a safe, private backup of my most confidential files online, what is the best way to go? Best as in, most secure, offering the highest level of privacy (i.e. being sure my data won't ...
1
vote
0answers
42 views

Encrypt content on Azure without using KeyVault? [duplicate]

Need to store some content in Azure Blob Storage, and want to encrypt prior to storing it on Azure Blob (we don't want to rely on Azure storage encryption on-rest). The issue is we do not want to ...
0
votes
0answers
75 views

Security of Storing Sensitive Data in the Cloud using Multiple Encryption

Operating on the premise that the cloud is inherently insecure, I have been wondering how much protection multiple layers of encryption affords relative to the inconvenience (which is clearly a ...
5
votes
2answers
771 views

WD My Cloud Vulnerabilities - What is at risk?

Recently there were around 70 vulnerabilities found within Western Digital's "My Cloud" devices. I am curious to know more about the scope of these vulnerabilities. All of the vulnerabilities have ...
4
votes
2answers
248 views

Is it OK to pass credentials to the client to allow it to upload files to Amazon S3?

Our mobile app will be uploading images to AWS S3. The question is whether to do one of the following options: Upload the image to our APIs server, then our APIs server uploads the image to S3 Pros: ...
14
votes
8answers
11k views

Keep encrypted files in sync on a cloud service, without having to upload an entire encrypted volume each time

Situation: User has several folders worth of GBs which they want to keep in sync on a cloud service (for example Mega or Dropbox) in an encrypted form; User does not want to sync a single encrypted ...
1
vote
2answers
1k views

Will encrypted files on a volume still be encrypted when uploaded to a cloud service?

If I encrypt some files in a folder using EFS, and then I upload such files to a cloud service, will they be encrypted on the cloud? While the logical answer seems to be yes, I think in reality the ...
3
votes
1answer
87 views

Can I store government ID numbers according to the PCI DSS?

I am developing a service, a part of which stores the credit card data of it's users. According to the Israeli credit card companies' requirements my users need to present their government ID number ...
1
vote
1answer
187 views

How Secure to is to forward CCTV stream to device's cloud

In my home CCTV, the video stream is forwarded to the Device's own cloud environment and we need to hook up our mobile views via that. I hope all the other device's streams are also forwarded in to ...
2
votes
1answer
819 views

EncFS vs EFS advantages for Dropbox-seamless encryption

I am considering a solution for securing my private data in Dropbox. In spite of OneDrive, MEGA and AmazonCloud are also being considered but now I put my focus on Dropbox as the most feature-rich of ...
1
vote
2answers
156 views

When encrypting individual files in directory for cloud storage, is storing IV and salt with the file wrong?

I'm developing a simple utility to solve a very specific issue: I want to store all my pictures on cloud. Family pictures, nothing kinky, illegal or death-threatening. the requirements are: I want ...
0
votes
2answers
119 views

If I backup my files to “The Cloud”, will they be kept there forever? [closed]

I have a lot of information to backup, this includes accounts passwords, personal files, images and a lot more. So I was thining about backing up everything using a cloud service like Dropbox, Google ...
-5
votes
2answers
433 views

Looking for Web Filtering Options to prevent employees from stealing work files/data

I have setup a small virtual office. How do I prevent my employees from uploading their work files (mostly excel workbooks) to gmail/drive or the gazillion other file sharing sites? Is there a url ...