Questions tagged [detection]

Detection is the act of discovering and/or determining the existence, presence, or fact of something.

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9
votes
3answers
41k views

How can I detect a VPN connection (even just in some cases) to get the real location of the user

I'm creating a web site, I would like to allow people to sign-up only from their "real" physical location (not using a VPN). I was thinking maybe comparing local and server time... what else...? ...
44
votes
4answers
62k views

How do you know your server has been compromised?

I recently helped a client who had their server hacked. The hackers added some PHP code into the header of the homepage redirecting the user to a porn website — but only if they came from Google. This ...
23
votes
2answers
7k views

How does a crypter for bypassing antivirus detection work?

I am talking about crypters used to encrypt files like viruses and keyloggers for the sole purpose of bypassing antivirus detection. How do they work?
8
votes
3answers
10k views

SSL VPN Detection and possible to block

Is it possible to determine the difference between a VPN on port 443 compared to standard SSL traffic? In order to access SSL websites you need port 443 open but if you setup a VPN Service on port ...
73
votes
11answers
7k views

Sanitize computer after Homeland Security seizure [closed]

I flew from overseas back to the USA and all my electronic equipment was seized by Homeland Security, including my laptop computer, external hard drives, flash drives, etc. After more than a month I ...
5
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2answers
179k views

Can a SIM card be tracked without cell phone and battery?

I have a SIM card alone without cell phone and battery. Can it be be tracked?
10
votes
1answer
33k views

How does a website detect proxy? [duplicate]

How can a specific website detect that I'm surfing via proxy? Is there a way to use proxy and not get detected? If so, how?
12
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2answers
32k views

How can I detect which background application is using the camera, microphone or GPRS?

I want to learn how to write and Android application that can detect a run time spy application. In this instance, a "spy application" is a background application that uses the camera, microphone and ...
4
votes
2answers
2k views

Is it possible to defeat the OS detection capabilities of network scanning tools?

Network scanning tools such as nmap have the capability to infer operating system version based upon lower-level system details. EG: TCP/IP stack behavior, etc. Are there any known methods to trick ...
2
votes
3answers
17k views

How to trace malicious hackers?

What are some of the ways law enforcement agencies can trace a hacking attempt back to the hacker? IP and MAC addresses can be spoofed easily, hackers can easily hide their tracks using compromised ...
3
votes
3answers
7k views

How effective is Windows Task Manager at identifying keyloggers?

I just hit upon an idea I have used in the past to distinguish between two instances of the same program, one of which was hung. While Task Manager is open and visible and sorted by CPU usage, I pick ...
2
votes
2answers
817 views

How can I detect unencrypted self-executing code in JPEG images?

Assuming that I have an infected image containing a self-executing malicious code that targets my image viewer and executes when I open the file. Supposing also that my computer is completely clean ...
2
votes
3answers
2k views

How can alleged illegal downloading be detected?

Joel Tenenbaum was accused of illegally downloading 30 songs. How might his action have been detected? Can anyone show a concrete method? Update Using a honey pot or monitoring the peers list makes ...
1
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2answers
4k views

What is the difference between Heuristic-based and Behaviour-based virus scanning?

I'm struggling to see the difference as all papers and notes I've read seem to contradict each other. Can someone please explain to me the difference between heuristic and behaviour based virus ...
36
votes
3answers
29k views

Is it possible to tell if hard drive is encrypted?

Is it possible to tell if a hard drive is encrypted, regardless of what software was used, i.e., Truecrypt / VeraCrypt / Bitlocker for AES-256? Just the other day, I thought it could be possible to ...
30
votes
4answers
3k views

Fake users in database for compromise detection

I have read of sites* adding fake users to their databases and then monitoring their usage. One of these fake users being used or even attempted login may mean database compromise etc. This sounds ...
13
votes
4answers
14k views

bot detection via browser fingerprinting

I've recently noticed that a few companies have begun to offer bot and scraping protection services based on the idea of browser fingerprinting to detect them, and then blocking the specific ...
21
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3answers
3k views

Would it be plausible to write your own anti-crypto-ransomware tool? [closed]

Question After reading about how basic ransomware targets and encrypts your files. I was wondering if it would be plausible to write your own script to try and detect such activities? Initial ...
12
votes
5answers
2k views

Detection and analysis of unknown malware

Suppose I have a binary which is suspicious. How can I determine whether it is malicious, and if it is, reverse-engineer how it works and what it does? For example, maybe using static analysis? Are ...
6
votes
1answer
3k views

How does OS detection work in practice?

I was wondering how OS detection really works on Nmap. I know it is about to send different tcp probes to see how the target machine responds to them. But what kind of probes would distinguish a ...
6
votes
2answers
2k views

How effective is an IDS at catching targeted attacks

I have recently become very familiar with IBM Site Protector. As I understand things, Site Protector is in the top tier of IPS/IDS systems, used by some of the largest Fortune 500 companies. I was ...
3
votes
2answers
5k views

How to check if a website is sending out a virus?

I'm a webmaster at a company without much knowledge of IT Security. We are running 6 computers connected to a central server that also hosts our website. 3 out of 6 people in the office have gotten ...
2
votes
0answers
258 views

Snort Parallelization Techniques and its effect on DDOS detection capability [closed]

I want to ask a query about snort parallelization. 1) Can snort detection rate remains same for all attacks after parallelisation? 2) As the parallelisation of netowrk traffic in each core is based ...
3
votes
1answer
3k views

How can I hide a program from another program?

If program A scans RAM, running processes and whatever, can I hide program B from being detected by A? Basically, I don't want program A to detect program B, or at least, stop it from identifying ...
2
votes
3answers
542 views

Repudiation in Copyright Infringement (BitTorrent)

Seeing this question : How can alleged illegal downloading be detected? sparked a question I have had for a long time. How does repudiation/non-repudiation work in such cases ? Argument: It is known ...