Questions tagged [cloud-computing]

Cloud computing is about hardware-based services involving computing, network and storage capacities. These services are provided on-demand, hosted by the cloud provider and can easily scale up and down.

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24 views

Are password managers still effective on a cloud PC (virtual machine)?

I have recently started using a cloud gaming service. It provides me with control of a 'remote PC' (actually a virtual machine running in their data centre) accessed through an app or VNC console. The ...
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21 views

Circumventing inbound traffic rule by faking reply traffic

My question is about security groups/firewalls and protecting a virtual private cloud from the external world. Here is a description of VPC default policy for inbound/outbound traffic (on AWS): ...
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Is it possible to make a remote server part of VPN so that only machines within a domain network can access the server?

First, let me describe the problem I am trying to solve. I have a domain-based network. My Source Control server resides on this network. This meant only devices connected to the network (part of ...
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27 views

Are AWS KMS and Google Cloud KMS's HSMs valid as Certified Qualified Signature Creation Devices?

I'm looking into digitally signing documents and planning to use AWS KMS or Google Cloud KMS service to create and manage the private/public keys. Underneath they use Hardware Security Modules (HSMs) ...
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34 views

Is Adobe Creative Cloud uploading files from hard drive without my permission?

I was trying to uninstall InDesign from my Windows 10 computer. To uninstall/update any of Adobe's programs, you have to first update to the latest version of Creative Cloud, which is a hub that ...
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55 views

When we should choose Virtual Private Cloud(VPC)?

Assume we build an application that has internal components (or microservices) on GCP (or AWS, Azure...). I guess there are 2 main security options: use VPC to protect internal communications. ...
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1answer
52 views

Privacy: why do I have to delete an account instead of simply no longer using it?

I try to avoid big internet companies (big tech) and try to find decentralized and/or open source alternatives. I use a password manager with unique usernames and generated, complex passwords. A lot ...
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0answers
37 views

Concerns about Fing scanner [closed]

For years I have been using the Fing iOS app to scan my home network to check for unknown devices. The iOS apps is nice and self contained, so I never worried much about its own security. I recently ...
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1answer
74 views

Symmetric vs asymmetric encryption for backup files uploaded to cloud storage

I want to encrypt my server's backups and upload them to cloud storage (e.g. dropbox, google drive). I understand the basics with symmetric (single passphrase-secured key) and asymmetric (public/...
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1answer
35 views

Using unique per-session gpg keys to store backups on cloud storage

I'd like to encrypt my server's daily backups and send them to dropbox / google drive / etc., as a backup. I've read of various approaches. Assuming symmetric encryption (passphrase rather than ...
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105 views

Someone is Cryptomining from my Google Compute Engine Instance

I run an airflow instance which python process scheduler, which is used to trigger different python ML process which has no relation to crypto mining. This is the process which is running this ...
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1answer
55 views

Securing media uploading to the cloud from reverse engineering

I own an RPG multiplayer game written in Java, where players can fight each other in the game. Recently I planned to invent a new feature, where the last 15 seconds of your fight and the "knockout" ...
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1answer
76 views

Reason for lack of asymmetric cryptography in AWS KMS for regions in China

In the documentation of the AWS Key Management Service (KMS) I found this interesting sentence: Asymmetric CMKs and asymmetric data key pairs are supported in all AWS Regions that AWS KMS supports ...
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2answers
183 views

Does Cloudflare masking my IP make my server more secure?

I've heard in a conversation and read in some forum posts that Cloudflare will proxy your IP, hiding it from the public, and this mitigates the risk of an attacker finding your server in the first ...
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0answers
56 views

Is a VPN + Firewall + Authorization Redundant?

I am creating a simple application so a distributed team can access sensitive data. This application will have a database that will be inaccessible to the public internet inside a VPC with my cloud ...
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1answer
123 views

Use of HTTP functions in GCP Cloud Functions Is Not Secure. Why they are still available?

As Google mentions itself in the documentation, the HTTP functions in Cloud Functions have no authentication and are not secure. HTTP functions are unprotected and will respond to any HTTP request,...
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1answer
219 views

How to make it harder for a VPS provider to access my data?

I know it is impossible to completely prevent a host from accessing the data of a virtual machine (as noted here, here and here), but I think there is value in making it harder to do so. Bare metal ...
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9answers
8k views

I have just 4 hours a month to security check a cloud based application - How to use my time?

I've been tasked with looking after an application deployed to azure. I have been allocated 4 hours a month. I essentially have half a workday to secure this application / keep it secure. What is an ...
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159 views

What is the best practice to run Openvas on Azure?

I have created a Kali VM on Azure to use for my pentesting engagement. I was able to access Openvas GM from my desktop, however I could not log in the GM even though I reset my GM password again and ...
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1answer
187 views

Why isn't cloud (AWS, Azure, GCP) metadata served over HTTPS?

Why can any application or user on your server type an insecure URL like these to get server information about that instance? http://instance-data.us-east-1.compute.internal/latest/meta-data/ http://...
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1answer
468 views

How to execute a command directly on the host system through docker.sock in a Docker container?

I've been studying Docker security and examining ways of escaping from container to host. Suppose Docker sock (docker.sock) is mounted into the container at /var/run/docker.sock, so that Docker ...
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32 views

Fundamental difference in security research in Cloud platform VM and normal machine

I am trying to study the effects of various network based attacks in an Openstack Cloud environment that I have setup with few machines. However, what would be the fundamental difference between a VM ...
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1answer
115 views

Is encryption/decryption done in the cloud when using CMK keys?

I am trying to understand how AWS KMS works, and there is one thing I am still not completely sure of: when using CMKs, so no Data Keys, no envelop encryption, does the encryption take place in the ...
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1answer
57 views

content disposition headers vs cloud and inspection

Quoting from McAfee MVISION CASB Many cloud services use custom content disposition headers in an effort to improve the performance of their applications. These custom headers have the ...
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2answers
116 views

How to protect a server against Cloud Hopper?

Almost everyone is using cloud service providers for their computing needs these days, including myself. I am getting increasingly paranoid about a Cloud Hopper threat recently described in this ...
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3answers
154 views

What are the techniques to know if VPS cloud hosting provider is accessing my data?

Immutable laws of security: https://fossbytes.com/10-immutable-laws-security-microsoft/ If a bad guy has unrestricted physical access to your computer, it’s not your computer anymore. I understand ...
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0answers
59 views

What are some common AWS Lamdba (specific) Security Pitfalls, Auditing Tools, and Methods of Mitigation?

I am writing a research paper detailing the security vulnerabilities of serverless AWS lambda applications, and how to prevent them. I am also compiling a list of security auditing tools that are ...
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0answers
125 views

Instance metadata on IBM Cloud [closed]

Is there any way to get instance metadata on IMB Cloud (a.k.a Bluemix) K8s cluster, from a compromised pod? Something like doing curl to http://metadata.google.internal/computeMetadata/v1/instance/......
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1answer
109 views

Is a good idea to have security logs stored in the cloud?

I was discussing with my friend the topic of the importance of log analytics/correlation and real-time response for an organization. Then, he mentioned that some people consider sending logs (...
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4answers
763 views

What are the benefits of using IP whitelists to secure cloud servers/resources?

Consider the following scenario: There is a "server" (e.g. database, API, etc) that is "in the cloud" (i.e. hosted on physical hardware that is physically distant from the clients and reachable only ...
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1answer
29 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?
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0answers
50 views

Secure API access with mobile apps in restricted environments

In our current project, IT rules prohibit anything that is not PROD to be publicly accessible from the Internet. Access to development and review environments must be severely restricted. That said, ...
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1answer
72 views

Is there any harm to writing a short plain-text string to authorized_keys?

I have a CFN template where I'm seeding an authorized key for testing via paramaters, through a build server. If this value is not provided by the build job, it defaults to a short, plain text string, ...
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0answers
63 views

Hybrid cloud access controls

In a hybrid cloud setup, where we have a cloud component which writes data into an on premise component, is it necessary to have separate access controls between the cloud and on premise? Our ...
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2answers
546 views

AWS serverless architecture compliance with PCI DSS 11.3 penetration testing segmentation

I am wondering how to comply with PCI DSS requirements (11.3) to test segmentation controls using penetration testing in AWS serverless architecture. We are using components such as AWS Lambda, AWS ...
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1answer
57 views

The main things a cloud data center could inject into its hardware

So some cloud service providers like Amazon use custom hardware to improve different characteristics of their servers. This also means they can control the security better, because there is nothing ...
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0answers
63 views

What vectors and attack surfaces do we consider when creating an attack tree for applications hosted on AWS resources?

When illustrating an attack tree for web and mobile applications hosted on AWS resources what vectors do we include. To start out I can include taking over a sub domain using S3 and EC2. I have gone ...
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1answer
830 views

do we need VPN for SaaS cloud applications?

If we need to connect to the corporate network from home, we need to have the VPN connection. However, what if for accessing SaaS applications like Google Doc, Salesforce, etc, do we need still need ...
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100 views

Meltdown checker says AWS and Rackspace is vulnerable - Why?

Today I was curious how my vmware environment stacked up against Spectre and Meltdown. So I ran spectre-meltdown-checker. It came back clean with 7 of 8 variants OK (the failed one is apparently ...
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1answer
2k 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 ...
2
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1answer
666 views

Amazon EC2 Abuse Report

My company recently received an email from Amazon which notified us of malicious activities occurring on our running EC2 Instance. The email states: We observed machines under your control ...
2
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1answer
120 views

What are some attacks to consider in a cloud deployment? [duplicate]

I want to discuss the following scenario: I use a cloud provider like Amazon where every instance of the OS is a VM. The hypervisor launches the VMs as needed. So let's assume there are two VMs ...
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1answer
205 views

Are Self-Encrypting Drives (SEDs) used in cloud environments?

I was wondering if SEDs are used in cloud environments, for example in data centers of CSPs like Azure or AWS? And if so, what additional protection do they offer beside from physical theft of the ...
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5answers
1k views

Cloud provider for Penetration Testing

I wish to set up a Kali Linux box on a cloud provider in order to perform same day penetration tests. The issue I am having is finding a cloud provider such as AWS, Azure etc. for this. For AWS they ...
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3answers
839 views

Managing trusted certificates revocation in containers in as “cloud native” means as possible

This is a bit of a tough question to ask so bear with me a bit. I'll try to be brief if I can. Problem statement I'm looking for a modern best practice for managing and deploying the trusted root CA ...
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3answers
151 views

Security risks of exposing a VM to single IP address on the Internet

I have a small office network with about 10 workstations and a single physical domain controller. I want to move it to the cloud. For that, I deployed a Windows VM on Azure, which I'm going to promote ...
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2answers
166 views

Privacy of client's virtual machine in cloud computing

As we know clients can create and run their virtual machines (VM)in the cloud computing. My question is about the confidentiality of data stored in the client's VM. Question 1: Does data stored in a ...
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1answer
34 views

Safely connect to remote site from cloud based code

I am connecting my computer located at my home to a remote server. To communicate with the server, I use a config file that contains my private and public keys and a passphrase. My code reads the ...
3
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1answer
75 views

How does security work in a cloud-to-cloud backup scenario?

I'm thinking of using Spinbackup which is a cloud-to-cloud backup of gmail, but I was resistant to the idea of telling Spinbackup my gmail password for obvious reasons. However, on the Spinbackup ...
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1answer
221 views

Penetration Testing of IaaS/PaaS environment - CVSS Score

How can I measure the effectiveness of a Penetration Testing carried out in a Cloud Environment (IaaS/PaaS) by a third Party Vendor ? Should I ask for a CVSS score or something else ? Any advise will ...

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