Questions tagged [obscurity]

Security through obscurity means relying on the secrecy of the design of a system to keep it secure. Kerchkoff's principle states that the security of a system should not rely only on obscurity.

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13
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2answers
2k views

What unique fingerprinting information can an iOS 10 app collect?

As a follow-on to these questions: What unique fingerprinting information can an iOS7 app collect? What unique device fingerprinting information can an iOS8 app collect? What unique device ...
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blocking direct access to files via url input while still allowing a script on server to access files

I am trying to accomplish the following and have been unsuccessful. I would appreciate any insight. Scenario: http://www.mydomain.com/filename.html is a webpage. On this webpage I am running a ...
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7answers
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Is it considered bad practice to use company name as part of an SSID?

From a security perspective, is it considered bad practice to use the company name as a part of an SSID? Assuming that the company is located in a densely populated area with a lot of "competing" ...
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7answers
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Is it a security vulnerability to tell a user what input characters are valid/invalid?

For input validation on a website, are there any security concerns with disclosing to the user exactly what characters are valid or invalid for a given field? CWE-200: Information Exposure says one ...
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How does Widevine, FairPlay, and other DRM's work under the hood?

I am trying to understand how DRM works under the hood. There doesn't seem to be much information about it on the web so I figured I would ask here. After some attempted research, I found it ...
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1answer
74 views

Looking for a specific quote about keys and transparent encryption implementation

I'm struggling to find a quote advising that we should be comfortable in sharing details of encryption methods and implementation with would-be attackers and the system still remain secure. The idea ...
0
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1answer
109 views

Should I complie software after making all the variable and function names “1-2 character”? [duplicate]

In JavaScript, it seems common for the official release of the code to use only single-character variable and function names (of course, after converting the original code which uses clearer names) in ...
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0answers
75 views

HTTP Basic Authentication vs. obscure filename [duplicate]

I'm setting up a service which allows a single 3rd party to access a file over HTTPS. The only security mechanism the 3rd party supports is Basic Authentication. To reduce complexity, I was going to ...
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2answers
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What unique device fingerprinting information can an iOS 12 or iOS 13 app collect?

As a follow-on to these questions: What unique fingerprinting information can an iOS7 app collect? What unique device fingerprinting information can an iOS8 app collect? What unique device ...
1
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1answer
891 views

Is there any security advantage to hiding URL parameters?

I am building a web app that needs to be secure. Is there any security advantage to hiding path parameters? I am using Angular (I don't know if this is important). What I mean by hiding path ...
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0answers
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How are the Voyager spacecraft protected from hackers? [duplicate]

I just read https://space.stackexchange.com/questions/37980/does-the-voyager-team-use-a-wrapper-fortran77-to-python-to-transmit-current and it struck me: how does NASA prevent satellites like this to ...
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2answers
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S3 Bucket Name Obscurity as Security

Edited to clarify: *The bucket is used by EC2 instances that process its data and display parts of it to the user. The EC2-S3 interaction is invisible to the user. * Can I assume that a public S3 ...
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3answers
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How risky is connecting to a hidden wireless network?

According to something I spotted something in a set of directions for connecting to a hidden wireless network from windows 8 found here (located under Step 1 > "Troubleshoot connection problems" > "...
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1answer
293 views

Is security by obscurity / obfuscation a valid option, or do the crawlers have JavaScript enabled?

I'm creating a new website, so I am thinking about how to protect my email address and phone number against crawlers, I actually mean email harvesters (most of which I suppose don't have JavaScript ...
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5answers
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Is open-sourcing the code of a webapp not recommended?

How to find out what programming language a website is built in? How much of a Django application could be reverse-engineered if the owner forgot to turn debug mode off? And other Qs like these ^ . ...
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1answer
5k views

Use of obscure URL for security [duplicate]

My hosting provider is offering an infrastructure-as-a-service (IaaS) product administered via a web interface, where the administrator can create and destroy virtual machines. To access the web-...
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4answers
216 views

What is the use of disabling detailed exception pages on open-sourced apps?

Frameworks for web apps typically can run in either production mode or development mode. One of the major differences between the two modes is how exceptions are handled: in development mode the ...
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3answers
8k views

Session Hijacking through sessionId brute-forcing possible?

cookies usually contain a sessionId to keep track of a logged user. What would prevent a malicious user to forge millions of requests with random sessionIds and send them to a server, hoping to ...
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7answers
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Doesn't the choice of encryption algorithm add entropy by itself?

Let's say someone has my encrypted data and he wants to decrypt it. People always talk about how the length of the key (e.g. 256 bits) decides about the entropy of the encryption, which totally makes ...
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4answers
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Does allowing a user to know their own authorized capabilities decrease security?

In a system with a complex set of computed authorizations, does conveniently allowing a given user access to view all of their own authorizations decrease security? In a "Policy as Code" system ...
3
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2answers
141 views

Can a URL that has no links to it be discovered? [duplicate]

Say there is a URL example.com/abunchofrandomsymbols and there are no links to it anywhere on the internet. Could it be discovered somehow? My guess is a browser like Google Chrome could report it to ...
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4answers
255 views

Track who leaks your software

I'm releasing some software in python which is impossible to fully encrypt. I was thinking of changing the variable names slightly for every copy that I release. Is this a good way to figure out who ...
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10answers
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Does it improve security to use obscure port numbers?

I recently started a job at a small company where the CTO prefers to host SSH services at obscure, high numbered ports on our servers rather than the well known port 22. His rationale is that "it ...
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16answers
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Security BY obscurity is horrible. Is security AND obscurity good?

Normally I preach that rolling your own custom crypto algorithm is a bad idea. But will it really hurt if it's the outermost layer though? Or will it make security worse? AES -> CipherText ->...
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2answers
294 views

“Security through obscurity” is bad for security systems but good for spam detection. Why?

I was reading a request on meta Stack Exchange: A request for an informative popup before possible serial voting. It received two seemingly well-informed answers from well-informed users, and I've ...
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0answers
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What unique device fingerprinting information can an iOS 11 app collect?

As a follow-on to these questions: What unique fingerprinting information can an iOS7 app collect? What unique device fingerprinting information can an iOS8 app collect? What unique device ...
0
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3answers
88 views

Adding false network tools / signatures for malware defense

I was looking into implementing a security measure by adding false analysis tools / signatures on client PC's. The idea is that certain malware would scan the environment for analysis tools, and if ...
30
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7answers
5k views

Does username length/complexity/uniqueness positively impact security?

Is having a longer/more complex username considered more secure than using a shorter/basic one? Would the uniqueness of a username positively impact security? This is assuming that adversaries aren'...
43
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3answers
3k views

The valid role of obscurity

That security through obscurity is A Bad Thing is received wisdom and dogma in information security. Telling people why something is to be avoided can be considerably more difficult when there is no ...
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2answers
186 views

Is *all* obscurity subject to debate? [duplicate]

I'm a beginner and reading about attitudes towards "security by obscurity." I understand that there are varying degrees of vehemence in the opposition to the use of obscurity, but I am trying to ...
3
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0answers
101 views

Is it a security risk to send a database primary key to an external system?

I'm registering the devices of my app users with a third-party push notification service. I need to associate each device with its user at the service so that I can target a specific user's devices ...
44
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11answers
7k views

Isn't all security “through obscurity”?

I know that one shouldn't rely on "obscurity" for their security. For example, choosing a non-standard port is not really security, but it also doesn't usually hurt to do so (and may help mitigate ...
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1answer
147 views

shared key random number generator with obscuring admin panel

i'm trying to make another security layer above the 2FA layer for super admin panel/login what i have in mind so far is a shared key (shared seed) to generate random guids that is created by client-...
4
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1answer
132 views

ASCII to HEX to obscure filenames: Is this common?

I've been learning about ethical hacking, and utilizing the wonderful resources that helpful organization like OWASP and OpenDNS have provided for learning and testing. However, I sometimes come up ...
88
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15answers
25k views

How to store passwords written on a physical notebook?

Answers to the question "How safe are password managers like LastPass?" suggest that storing personal passwords on a physical notebook might be a reasonable option: I know someone who won't use ...
4
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2answers
292 views

during ssh handshaking server introduce itself - does it improve security to change self presentation?

My Archlinux running devices does not present themselves duing ssh handshake: $ telnet 192.168.1.151 11735 Trying 192.168.1.151... Connected to 192.168.1.151. Escape character is '^]'. SSH-2.0-...
8
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1answer
1k views

What unique device fingerprinting information can an iOS9 app collect?

As a follow-on to these questions: What unique fingerprinting information can an iOS7 app collect? What unique device fingerprinting information can an iOS8 app collect? Apple has apparently ...
31
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4answers
5k views

NSA Suite A Cryptography: Security through obscurity?

What is the opinion of scholars, cryptographers on NSA Suite A? Containing unpublished algorithms. Could it really be that much better than the published algorithms besides being obscure and not ...
3
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3answers
1k views

Does mixing in keystrokes of Backspace, Arrows and Delete add any security to password typing?

It is well known that the analysis of the keyboard sound can reveal/hint at what keys were pressed when a password is typed. One could mix in wrong characters (not belonging to the password) with ...
-3
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1answer
512 views

Does combining two encrypted strings secures password? [duplicate]

For example, a person having password 123456. it's MD5 is e10adc3949ba59abbe56e057f20f883e and SHA1 is 7c4a8d09ca3762af61e59520943dc26494f8941b and after joining both hashes. Which comes to be ...
43
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7answers
9k views

Is suggesting a correct url in a 404 page bad practice?

I'm currently writing a web application, and my client asked me if it would be possible to suggest a valid URL to the user when they accidentally write a typo in the URL bar, an example of this would ...
4
votes
1answer
306 views

Increased security from separating username and login name?

I seen this question: Does username length/complexity positively impact security? which got me thinking about usernames/passwords from a developer-aspect. If a developer for an application were to ...
0
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2answers
122 views

Using Two Different Brands of Security Tools To Block Backdoors

There's this idea of using 2 brands of firewalls both inline that is usually brought up: {Internet}<-->FW(A)<-->FW(B)<-->{Internal Network} Or using 2 algorithms: {Plain ...
0
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2answers
94 views

Can I safely store my admin scripts in a publicly available script file?

On a project I am working on I have all javascripts mixed together in all.js. I have a separate file, admin.js that contains scripts used on the admin section of the project. This file is only ...
108
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8answers
20k views

My school wants to keep the details of our door authentication system a secret. Is that a good idea?

So, I am designing a door authentication system (can't really go into more detail) for our school, so that only authenticated persons can go through a certain internal door. They hold that its inner ...
34
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4answers
4k views

Is it okay to reveal database's table names?

I'm developing web application that uses database. I have to do some operations which needs database table names and db table schema. Will it be secure if I send this kind of information to client ...
8
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3answers
1k views

Risk of running services on ports >1024

In a Reddit thread on securing SSH access to a Raspberry Pi, one commenter recommended running SSH on a non-standard port of 8123. Another commenter had this to say on the matter: Don't change ...
5
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1answer
178 views

Is reskinning work computer desktops a practical security measure?

Recently, I opened a new checking account a national US bank. The branch of this bank was very modern, and they even had a wall of screens behind the teller's desk. When I was meeting with an advisor ...
19
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4answers
14k views

Processor microcode manipulation to change opcodes?

I had recently thought of an extreme way of implementing security by obscurity and wanted to ask you guys if it's possible. Would a person with no access to special processor documentation be able ...
2
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2answers
145 views

Are there any security benefits in deleting the private key of a https webserver after starting it?

Say you have a web server offering pages via HTTPS. After the process begins running, if you were to delete the private key, would this prevent private key recovery in case of server compromise? ...