Questions tagged [attacks]

An attempt to exploit a weakness in a system, either for nefarious or research reasons. Questions with this tag should be about designing, carrying out, or defending against the attack itself, rather than about the underlying weakness.

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48 views

Is it possible to setup a really independent internet service? [closed]

With the recent news in mind where plenty of people and organisations have been "deplatformed", not just Donald Trump and Parler, but even less controversial sources like Ron Paul (although ...
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Question on stack overflow

I am preparing for an exam in Computer Security and doing a past-exam without soluions, so I wanted to check if my reasoning holds on a question about stack overflow. Below is the C code in question. ...
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How do you infect a machine to become your c&c, without using another c&c

I started doing ctf for a while now, but never actually done anything in "real life". It happened that I found a vulnerability on a website, so out of curiosity I started to look up what the ...
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Problems understanding the use of Distance Bounding against Man-In-The-Middle attacks

I currently have to write a paper for university in my Network Security lecture about methods of secure location verification. Therefore, I chose to write about several distance bounding protocols, e....
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2answers
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SQL injection using brute force?

I am studying about cyber defense lately for fun and found about a proposed method that as I understand it performs automated SQL injection using brute force by training a model. At some point it says ...
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92 views

I have been a victim, but of what? [migrated]

A few days ago, an old shopping account of mine was "hacked". Or at least, an attacker managed to change its password. Now, I am wondering what was the purpose of this happening and whether ...
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1answer
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Does limiting size of images prevents buffer overflow?

I am writing an app that serves images to clients. The app is written mostly in python. I store the images in AWS s3 and serve the clients them directly from there. Am I vulnerable to buffer overflow ...
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1answer
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How plausible are cyber attack attributions between states? [duplicate]

When an attack on IT systems of a state is discovered, often another state is publicly blamed for it within a few days. I wonder whether these attributions are plausible from a technical point of view....
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CSRF payload delivery

If an attacker successfully delivers a CSRF payload by any means, what response can he can see once a victim clicks the link?
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Basic questions about a buffer overflow attack example

People say buffer overflows are serious security bugs that can usually be exploited. Here is an artificial buffer overflow #include <stdio.h> int main(){ int a[3]={0,1,2}; printf("...
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2answers
177 views

Does a hacker know which IP they hacked?

Suppose someone hacks my computer (by any means, say a virus or trojan like RAT), will they be able to know my IP address in real time? This is about dynamic IP addresses.
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What is the Plundervolt attack?

CVE-2019-11157 exposes a vulnerability in the undervolting API from Intel processors, that became known as the Plundervolt attack. What is the Plundervolt attack? Should domestic users be afraid of ...
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Commercial VPN Connected Devices Security [duplicate]

Would clients of a commercial VPN service be able to see each other's devices with NMap or a similar tool? What potential security consequences may transpire because of this threat? TIA
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Can/should I automatically report network break-in attempts?

For the last 15 years I've been using SpamCop to report the spam I receive. I do this because it sometimes results in spammers and the third-party machines they compromise getting shut down, at ...
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How good can X-Frame-Options HTTP header do against click-jacking?

X-Frame-Options HTTP header is used to tell if a webpage is allowed to be used in a frame/iframe. Frames can be used for click-jacking/UI-redress attacks. It is advised to set X-Frame-Options to '...
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1answer
117 views

Attack scenario when using split tunnel VPN

Background As many others I am working from home and we use a VPN to access services from the company intranet (SMB fileshares, git repo, project management etc). To improve things like video calls I ...
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1answer
101 views

Security implications of a fixed vs relative pathname

What would be some security implications of a fixed pathname (although probably in a system directory when it would be deployed as a system service) rather than a relative (out of current directory)? ...
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1answer
129 views

INTEL-SA-00086 extracting the secret key used to encrypt Intel CPU code: is the digital signature bypassed?

In a recent attack to INTEL-SA-00086, the researchers are able to extract the secret key that encrypts updates to various Intel CPUs. In the arstechnica blog it is mentioned as The key may also allow ...
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1answer
52 views

Getting an abnormal amount of firewall warnings on web server

I just had a look at the firewall status and saw it had blocked over 300 requests from TOR, Python Urllib, and some script called aabbccdd.xss.ht/pigeonburger.xyz (pigeonburger.xyz being my website). ...
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5answers
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Can a website steal passwords saved in my browser?

Today I was on Steam and someone sent me a link and asked me to vote for him in some online gaming league. I clicked on it and the browser told me that this could be an unsafe link so I didn't proceed ...
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1answer
107 views

Are there any contactless (RFID/NFC) card vulnerabilities that are still unsolved? even minor ones

The title is pretty self explanatory. The market is pretty secretive about these kinds of matter since companies won't give out vulnerabilities for attackers to abuse and will give out vulnerabilities ...
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1answer
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If an attacker can inject any code into an email client on a users computer, how can he compromise confidentiality, integrity and availability?

I have an upcoming exam for a Security course. The following question has come up a couple times in past exams and I could use some help formulating an answer. Suppose a user downloads an unsigned ...
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1answer
117 views

Based on these HTTPS requests what type of attack is this?

I'm seeing over 1000 attempts to hit my API endpoints with many 500 responses. It seems clear that the would-be attacker is attempting to poke around the APIs, but it isn't clear to me what type of ...
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51 views

Difference between Attack Pattern and Attack Vector

I am learning about InfoSec and I always found these two terms Attack Pattern an attack pattern is an abstraction mechanism for describing how a type of observed attack is executed Attack Vector a ...
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Attack while using a VPN? [closed]

While I was using a VPN, suddenly all websites refused to connect in HTTPS, and Firefox warned me since I enabled HTTPS-only mode. Is there a chance that this was an HTTPS downgrade attack? Should I ...
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How to obtain PRGA file using aireplay-ng chopchop or fragmentation attack

I am running Kali linux 2020.3 on VBox on Windows 10. I put my wireless card AWUS036ACH chipset Realtek RTL8812AU in monitor mode using airmon-ng start wlan0 X (by x i mean the number of channel AP is ...
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When MAC flooding, why would an attacker specify IP addresses and/or TCP ports?

I'm specifically referring to the macof tool (part of the dsniff package). As I understand it, MAC flooding is meant to overload a switch's CAM table, which maps MAC addresses to switch ports. Where ...
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175 views

Can ISP deanonymize Telegram public channel creators?

In a Telegram public channel, all messages are public, send by the channel creators and contain a timestamp. Suppose I am an ISP. Can I analyse the traffic of all my clients and decide if they are ...
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1answer
102 views

What could be recovered after an interrupted ransomware attack?

Four days ago my PC got phobos ransomware. I didn’t notice until three days ago, and the reason is that the attack stopped midway, leaving some of my data as it is and not leaving behind any ransom ...
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2answers
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How to understand a single packet embedded with multiple requests?

When I read Multi VERB Single Request: This Attack is also a variation of the Excessive Verb Attack strategy. The attacking BOT creates multiple HTTP requests, not by issuing them one after another ...
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1answer
101 views

Insider threats vs. insider attacks

I understand that a threat is a possible security violation that might exploit the vulnerability of a system, and a attack is an action on a system that harms the organisation in some way. Therefore, ...
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1answer
51 views

Booting 'live' form the hard disk

I use VeraCrypt for file-container level encryption for all of my files. But being very paranoid, I am always worried about the OS1, Primary applications and non-primary applications leaking the data....
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1answer
460 views

How to prevent XSS attack on selected window.location in javascript

This is my code where i have a userId in a method SwitchUser_Click. I need to prevent or somehow encode the return value from the switchUser_Click as it includes the UserId of a user vulnerable to ...
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How are accountgenerators with captchas still possible?

I was asking myself, how there are still account generators (e.g. for Steam) wide available for everyone. With account generators I mean programs, that are automatically creating a huge amount of ...
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2answers
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Can a Slow Post HTTP attack be done from a single client?

Can a Slow Post HTTP attack be done from a single client? The following source cites this line: https://medium.com/fantageek/understanding-socket-and-port-in-tcp-2213dc2e9b0c Ports are 16-bit numbers,...
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1answer
2k views

Hijacking stale DNS entry to point to your own website

Context and system configuration: AWS EC2 instance with a public IP address AWS Route53-managed DNS with a somesubdomain.somedomain.io pointing to the above IP address Above AWS EC2 instance was not ...
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7answers
7k views

How to secure a mobile app against its user?

I have created a mobile application that monitors the accelerometer activity and based on that it rewards the user if a specific pattern is observed. How I can secure the application against the user ...
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124 views

What type of attack is this? '[0]

This is the example query: GET directory/file.txt?lang=it'[0] HTTP/1.1 I don't know what language it is. The ' (single quote) reminds me of a SQL Injection. I don't think it's a typo because I saw ...
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1answer
152 views

using Uuid for security

I read that uuid does not bring any security advantages But I can't find why It doesn't bring a little bit of extra security in the scenario below ?: Consider that right now the session id is ...
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1answer
47 views

Are Thunderbolt-enabled computers without Thunderbolt ports vulnerable to Thunderspy?

Could these two attack scenarios exploit the recently publicized vulnerability? Using a Thunderbolt adapter like an USB-to-Thunderbolt adapter on a computer without any Thunderbolt port Temporarily ...
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1answer
68 views

Spam link sets cookie(s) then redirects to google.com - what would be the point of this? Should I be concerned?

Received a spam link about "a package soon to be delivered" via an SMS message. Didn't click it in my phone, but couldn't help myself but to go to the URL in a browser on my laptop :grimace: (not ...
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54 views

Architecture of smartphone security: why FBI needed apple's help? [duplicate]

I want to focus on technical aspects, not on the fact that they wanted to make a precedence. i assume the smartphone security architecture is following: cryptography chip. it's read only and ...
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Creating a Secure Modern MMO From the Ground Up [closed]

MMOs have been around along time. As a result, there are lots of past attacks on MMOs that we can learn from and apply to a modern MMO. As a security novice, I was wondering if in today's climate you ...
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145 views

System Process PID 4 Attempt to connect to many risky IPs using local port 137 [closed]

I noticed in our APT solution that many endpoints in my company initiate connection attempts: Process initiate: system process PID 4 Remote risky IP 185.94.111.1 remote port: random remote ports ...
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2answers
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My VPS was used for DDOS Attacks [duplicate]

I got an email from my hosting provider telling me that my VPS was used to perform DDOS attacks on this website: cpanel4.vhosting-it.com. Unfortunately I haven't read their email sooner, so they ...
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1answer
83 views

Attacking through an open but not listened port [duplicate]

Let us say, we open a port, say port 123, so that upon listening, an application on the server can receive incoming packets through the port 123. If there is no way that an inside application on the ...
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42 views

AWS EC2 instance traffic spike on port 80

We received an "abuse report" from AWS indicating we may have experienced a DDOS attack. From what i could see there was definitely some spikes in the last two days. According to AWS it was through ...
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1answer
116 views

Is there a way to lock down a network? [closed]

If supposing I discover that my network is being attacked by some hacker or is being compromised in any way and I am able to detect it. So, is there any software-oriented way of 'locking-down' the ...
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51 views

Disguising attacks through well known bugs

In the movie "Minority Report", the Precogs can foresee murders and store in video log files that can be inspected in the future. There was a known "won't fix" bug where these visions would "echo" and ...
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27 views

Which kind of attacks could be done on CoAP protocol?

I'm a student and I'm studying the security of the CoAP protocol. So, thinking on the attack-surface my thought was about internal attacks (i.e inside the network) and the external attack (i.e. ...

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