Questions tagged [architecture]

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Brute force prevention and alike with stateless API architecture

What are the patterns (best practices, whatever) to prevent brute force (and features alike) in stateless API architectures that keep the system stateless? Couldn't find anything regarding this topic. ...
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Security Risks with Event Streaming

At a high level based on the technology of event store and streaming (i.e. Apache Kafka, Amazon Kinesis, etc.) to decouple systems and make them event driven systems. I was wondering what new ...
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1 answer
151 views

Is there a difference between a bootkit and a ring-0 rootkit?

I understand the difference between a Ring-0 rootkit and a Ring-3 rootkit, in terms of their hierarchical depth in computational models. That is kernel mode and usermode, respectively. I am confused ...
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29 views

Network Segmentation - Single Firewall VM vs Multiple

I am currently implementing a new network with different segments. The separation of those segments is achieved using VLANs. To enable some segments to communicate with each other and to be reached ...
1 vote
1 answer
123 views

End To End Encryption Model

I have an architecture which requires a certain subset of data to be more heavily secured and encrypted. The main parameters which I believe meet the scope of the project are as follows: Data should ...
1 vote
2 answers
267 views

Refresh token replay detection

I'm trying to detect refresh token reuse / replay. A typical approach: send refresh token (on login or refresh) create refresh token as opaque value (e.g. buffer from a CSPRNG) base64 encode value ...
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Using a spa login page for authentication in a openId connect servic

I am looking to create a brand new authentication service that follows the OpenId connect protocol. I would like to use a username/password combination for the authentication and the authorization ...
2 votes
0 answers
67 views

What are the "Design Patterns" for working with HSMs?

I've been attempting to learn about the different features and uses of HSMs, and I keep thinking that someone must have put together a set of design patterns for different ways that HSMs can be used ...
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Are there any security architecture patterns in the same way there are software design patterns (GOF)?

So I've been googling around and couldn't find an answer to my question (I don't discount the option that I could be asking the wrong question after all). I see there is a question that deals with ...
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1 answer
5k views

Security considerations of x86 vs x64

What if any, are the security considerations of deciding to use an x64 vs x86 architecture?
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1 answer
187 views

Using an HSM to protect encrypted data even when a server is compromised

Imagine a system architecture where an API server is able to send a request to an HSM, and the HSM is able to decrypt some data for a particular user/customer, in order to serve some hypothetical ...
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1 vote
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72 views

Do i place this service in the DMZ or datacentre(internal)?

I have setup a VM on our internal network and it is assigned an internal IP address. The VM requires connectivity to a couple of internet sites mainly Microsoft and ports are generally 80 and 443. ...
1 vote
1 answer
121 views

Should IDM be private or exposed for app login?

In the diagram below, I have two options for authenticating into a protected resource. Both options use an Identity & Access Management (IDM) tool (in this case keycloak) to store credentials and ...
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1 vote
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Has hackers ever used a microarchitectural side channel to launch an attack?

I'm a student of computer architecture and I just got through a class on Hardware Security. We spent a considerable amount of time learning about microarchitectural side channels, reading papers on ...
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Vulnerability in which part of the Android architecture would allow an attacker to take control of the hardware [closed]

This question is intended for better understanding of security features of Android architecture. In particular, I want to know what part of the architecture needs to be secure to prevent an attacker ...
3 votes
1 answer
1k views

Propagating user context between microservices secured with M2M JWT tokens

We have a current microservice architecture where we secure communication between microservices via Machine-To-Machine access tokens (these tokens are obtained using the Client Credentials grant flow)....
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1 answer
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Implications of querying OrientDB directly from front-end

Give that OrientDB exposes a REST HTTP API, and that it seems to have quite a few security features, what are the (especially security) implications of querying OrientDB directly from a front end web ...
1 vote
1 answer
348 views

Safety difference between running on localhost versus the private internal ip address?

I am wondering if there is any additional security increase by choosing to run your webserver on an internal private ip address and port like xyz.ab.cd.efg:8080 versus localhost:8080 or 127.0.0.1:8080 ...
1 vote
1 answer
183 views

Is it acceptable to have SPA + API from security point of view?

We are building something like specific blogging social platform. Architecture was originally intended as to have: single page application: all gui, rendered in the browser on the client frontend: ...
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1 answer
220 views

Exploiting a service on 32bit OS on a 64bit processor with ShellCode

Let's theoretically assume I have an overflow vulnerability on a certain service I want to exploit. The service reside in 32bit Operating System on a 64bit Processor. I'm attempting to wrap my head ...
2 votes
1 answer
78 views

Implications re security practices of full account access granted to third parties

I'm working with a company (say, Acme) that does some ongoing data collection and processing for me. The data in question is private but not all that sensitive. Part of Acme's service has password-...
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Are SSH certificates more secure for service accounts?

I'm considering how to deploy a service that needs SSH access to many important boxes in my infrastructure. Rather than store a long-lived SSH private key in a key store that the service could request,...
1 vote
1 answer
641 views

Should the Router or Firewall Come First?

Network scenario.... I have a typical enterprise network meaning ISP > Edge Router > Firewall|DMZ > Switch > LAN I know there are several debates about what device comes first, but ...
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1 answer
460 views

API Key via Basic Auth: Send it as a username or as a password?

In APIs that authenticates with a single API key (eg a long random string) via Basic Auth, I have seen that most (eg Stripe, Unbounce) sends the API key as the username, leaving the password field ...
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1 answer
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Debating between architecture options for offline updating of Linux machines in a vertically segregated network

My coworker and I are discussing the pros/cons between two potential architecture options, and I would like to gather feedback on which option is better and why. First, a description of the ...
0 votes
1 answer
82 views

a chain of 3 federated IdPs

My client has 5 different identity and access management solutions. Until now they have been asking each one of their suppliers to add 5 trusted parties to their IAM solution, implement different URLs ...
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1 vote
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Is there any advantage in using Google's IAM on Android?

We are building a few corporate apps for field workers / front office. In most cases each user will have their own device, but there are some shared devices (for example reception). The devices are ...
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1 answer
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Where precisely are client X509 certificates stored?

Apologies for what might seem like a naive question, but there is a detail to PKI architecture between clients and servers, the answer to which I have so far not been able to come across no matter ...
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3 votes
2 answers
470 views

How does a security countermeasure failure impact a system?

In the context of safety-critical systems, such as transportation systems, it is important to verify if such systems meet/do not meet safety requirements. ISO26262 expresses these requirements as a ...
0 votes
2 answers
109 views

OAuth 2.0, what should it be returned in the authorize endpoint if the client_id is wrong and no redirect_uri is passed

We have been working on a OAuth 2.0 IDP implementation, and during the implementation of the authorize endpoint, i couldnt find in the RFC 6749, what should happen if the client_id is not passed in ...
2 votes
3 answers
2k views

2 vs 3 tier network architecture

I am interested in how a 3-tier network topology (web/app/data) provides improved security than a 2-tier topology (web-app/data). I understand the concept of a DMZ as the initial contact point with ...
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1 vote
1 answer
273 views

Separation of devices for VPN / Firewall [closed]

Our company has two separate firewall devices from different vendors (Checkpoint / Cisco) for firewall and VPN access. We're currently evaluating the possibility of migrating to a newer, clustered ...
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2 votes
1 answer
144 views

Multi Factor and order of authentication [duplicate]

I'm questionning the design and architecture around 2FA/MFA controls while authenticating to services and servers. On major platforms(*), the end-user is: first prompted for credentials (username/...
-1 votes
1 answer
114 views

what are steps to do in order to secure my appli web [closed]

I'm asked to secure an appli web and I don't know really which steps I can follow to secure my appli web.
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344 views

Pros and cons of extending L3 to the network edge (routed access layer)?

Scenario: Greenfield network rebuild for a SMB distributed over ~10 small campuses with 1 fairly large central campus spread over ~ 100 Miles. You have almost no Cap-ex budget restriction (within ...
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1 vote
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106 views

What would you do as first day of CSO or Head of CyberSecurity [closed]

I was asked this question at an interview today and was unable to give a structured answer since there is so many things a head of security can do. The additional info that I had were : - You can ...
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82 views

How could an account-based service trust a checksum provided by a client-side application whose code is open source?

Say for example that I was a digital video game provider, and my games were played via a virtual machine. Lets also say that the code for this virtual machine were open source, and that this VM was ...
2 votes
1 answer
173 views

How can an old hardware lead to a security failure?

I am working on critical cyber physical systems, and my work and research lead me to some questions. In the following, I assume that the attacker is not able to change the hardware of your system and ...
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-2 votes
1 answer
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If I put a variable in the private section of a class, will the variable have more protection againsted reverse engineering? [closed]

class LockdownUnlock{ private: /*snip*/ std::string rootCertificate; //Will this protect the data? /*snip*/ public: /*snip*/ }LDUnlock;
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1 answer
1k views

Are there risks in not having a edge firewall? [duplicate]

I am currently working with a client that has all their external traffic going through the core switch and then is being passed to the router and back through the core switch and then to the rest of ...
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3 votes
2 answers
663 views

Is authentication + authorization a good idea at gateway level when using microservices?

I have this simple design: --------- ------------- ----> Queries ----> Gateway ---- RPC ----> Microservices --------- -------...
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1 vote
1 answer
519 views

Is INTEL-SA-00075 Detection and Mitigation Tool enough to mitigate IntelME attacks

Is that tool enough to mitigate/protect againts IntelME vulnerability? https://downloadcenter.intel.com/download/26755?v=t If it's not enough I more I can do to protect againts IntelME attacks ?
2 votes
1 answer
544 views

Securing an HSM on the network [closed]

I've never had to place an HSM on a network before so I want to ask this question to get a consensus on best practice for this. The HSM will reside on an internal network which will look like this; ...
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2 votes
2 answers
2k views

DMZ layer for web server/presentation layer

I need help explaining to non security people why I want to require the webserver/presentation layer in a dmz. I've given options for a tier two (presentation/logic -> logic/data in zones) ...
1 vote
1 answer
281 views

My company is considering collapsing from multiple independent domains to one trust network

Currently, we have a number of domains for various purposes like back office, production, DMZ, partners, etc. There has been a change in management thinking to simplification. They want all the ...
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0 votes
2 answers
510 views

Design and Security Architecture - where should IPS/IDS be placed?

I am a system architecture working on projects - mostly CDN related projects - and I am currently a bit confused about where the IPS/IDS should be placed. We have a NGINX-based webserver for the edge ...
0 votes
1 answer
270 views

What are some possible ways of sending anonymous request to re-crawl to Google? [closed]

This is a proposed architecture for submitting anonymous request to re-crawl the web page to google bot. I tried to come up with the solution given below. The intention of posting it here is to know ...
3 votes
1 answer
5k views

How does a smart card work? [closed]

My understanding of smart cards is that they are a complete system on a chip. I.E. they have a processor and memory and can perform calculations independent of the system that is communicating with ...
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10 votes
2 answers
11k views

CSRF in microservice architecture

What should be proper way to implement CSRF protection in microservice architecture? Where services are stateless. To put CSRF verification on system entry? e.g. Gateway With this option I can't ...
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1 vote
2 answers
197 views

single secure architecture solution for below 4 threats

An e-commerce website uses LAMP stack hosted on a single rack-mounted server located at a data center. On every transaction, credit card information is stored in the MySQL database at data center. ...