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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5
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0answers
57 views

Is rowhammer comparable to faults caused by radiation?

As far as I know, both rowhammer and radiation based fault injection, can cause arbitrary bit flips in the memory. Are there any differences in matters of possible outcomes of both "attacks" on ...
0
votes
2answers
198 views

What can I do about being heavily port scanned?

I have two devices connected wirelessly to my Linksys router while running Symantec Endpoint Protection on my computer. A few days ago I started using the internet by connecting the cable directly to ...
1
vote
2answers
145 views

Strange 'agetty' process running on my VPS.

Recently, I had to reinstall one of my VPS servers (again), due to malware. I took what I considered to be pretty good security precautions. I also locked the root account and am using sudo as well. ...
0
votes
0answers
25 views

Why isn't ettercap working

I am working on an ARP poisoning/browser redirection project with Ettercap but even if I follow all the steps right it still doesn't work. I tried disabling firewalls too. What I do is: Start ...
0
votes
1answer
71 views

Why is a DNS Amplification attack considered a DDoS attack?

My understanding is that a DNS Amplification attack involves sending a DNS resolver a bunch of requests with a spoofed sender address, which is the victim's. The DNS responds to this IP address with a ...
3
votes
2answers
636 views

Facebook iOS SDK Authentication

The Facebook iOS SDK only needs your bundle & app IDs of your iOS app to match those of your Facebook app. If I find out an app's app ID, can't I just create another iOS app with that app's ...
0
votes
1answer
83 views

Is Qt framework is under attack or it has something suspicious (only in free version)

I was trying to download Qt framework. I went to its Official site (I'm sure, I checked in Wikipedia) for Visual Studio. But when attempting to download Qt for Windows, my Firefox shows this message: ...
3
votes
0answers
76 views

Security of the shared secret key for a smart meter (Linky) [closed]

Reading the specs of a new electricity smart meter (called Linky in France), I was surprised about the chosen encryption method (128 bits symmetric key AES), based on a single secret key (called CCC ...
-3
votes
2answers
64 views

What could an attacker feasibly do if he/she compromises a DNS server? [on hold]

I know one could impersonate sites and steal credentials but that is about it. Are there any other types of other attacks, and do companies actively check DNS servers to protect their clients? Also, ...
4
votes
1answer
122 views

JS snippets on my live project do not appear in my code residing on my production server

I have a Django website project that is live (let's call it example.com). It's a forum where users can submit comments and reply to them. It has a Postgresql database, and gunicorn + nginx reverse ...
0
votes
1answer
69 views

s this an exploit attempt and where can I analyse it?

Edited: Never mind the MinGW or .bash_history, I can see that is unlikely. Somebody attacking me and those bytes ending up in the frequently used file .bash_history by accident is not that unlikely ...
0
votes
2answers
42 views

Repeated “Dos Attack” from remote IPs

I've been having some weird issues with a home network, and it seems to me like I have some vulnerability I don't know about. To be honest, though, I'm not a big network/security guy and I kind of ...
0
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0answers
11 views

stopping router attack script using foreign addresses [duplicate]

I'm not a security expert but I've got someone using a script to attack my router. Sometimes it's every 10 minutes, but since I called the person out, it has increased in frequency. They are blocking ...
1
vote
1answer
35 views

Does this case fit the definition of a replay attack?

I read the definition of a replay attack on Wikipedia. However I don't know if the following case fits the description: An attacker captures a HTTP request sent to a web server, modifies the request ...
6
votes
2answers
685 views

DNSspoof not working

My aim is to DNSspoof. My network is using a wireless router with the address 192.168.1.1 and primary DNS is the same as the router address. I have enabled Kernel IP forward in Linux. DNS host file ...
0
votes
0answers
3 views

How can I show RSA OAEP IND-CPA secure [migrated]

How can I show, that RSA with OAEP is IND-CPA secure by using G,H one way function?
3
votes
1answer
239 views

POODLE vulnerability in Safari

I have been trying to mitigate POODLE on client side in my organization. I disabled SSL3 in most browsers but couldn't disable it in Safari. Apple released a Security Update 2014-005, which, ...
69
votes
19answers
5k views

What security resources should a white-hat *developer* follow these days?

What sites, twitter accounts, FOSS software should a white-hat code 'hacker' follow these days? Do Include: Late breaking information on new security issues (RSS, Twitter, etc) A website that ...
-1
votes
0answers
55 views

Explanation for these entries in the Suricata fast.log?

We have installed Suricata on our system. We have the following similar lines in our fast.log. Can anyone explain these lines? 03/17/2016-17:18:52.744707 [**] [1:2200075:1] SURICATA UDPv4 invalid ...
8
votes
3answers
96 views

Can a TCP connection be terminated by an attacker if SSL/TLS has been used to protect data in the TCP segment?

I understand that SSL/TLS is built on top of TCP. That is after a TCP connection is established, an SSL handshake can be started. When it is completed, all communication will be encrypted and ...
25
votes
3answers
3k views

Does using a live CD make you more vulnerable to remote attacks?

Some people recommend the use of a Linux live CD for online banking, but doesn't that make you more vulnerable to network attacks since it's not updated? I tried installing updates and it required me ...
3
votes
1answer
50 views

How can releasing the text of an SQL query compromise security?

I have asked a government agency, under Freedom of Information legislation, to release two SQL queries they ran to produce a table which they published in a report. That is, the agency published ...
4
votes
1answer
98 views

How to automate sending messages about abused internet hosts

I have just looked into the error logs of our web server and I have observed a great increase of SQL injection attacks this year. Those attacks, more than 3000 in 2016, usually look like this: ...
62
votes
5answers
8k views

HTTPS web service switched to HTTP. What can go wrong?

I recently visited a website which used to have an HTTPS connection. Now it has just a plain HTTP connection, and the authentication method has changed from user+password to "authenticate with Google ...
1
vote
1answer
55 views

Attack Challenge/Response Authentication by requesting challenges

If a client/server application uses a challenge/response pattern for authentication, e.g. SCRAM or alike, it often involves the usage of nonces (client nonce and server nonce) for preventing replay ...
12
votes
8answers
2k views

Facebook account keeps getting hacked, can't seem to figure out why or how?

One of my friends, she has a lot of friends on Facebook, and uses it for marketing. Her account keeps getting broken into. Her password gets reset and/or gets locked for changing resetting password ...
2
votes
2answers
56 views

What can a user do in order to protect against CSRF attacks?

If I'm browsing while I'm logged in into my hosting panel or router or any other application, there is a chance of being hacked by a CSRF exploit. So, the question here is about user or client-side ...
11
votes
5answers
3k views

Why do hackers scan for open ports?

So, whenever you hear of the mean little hackers who hack websites you hear of "port scanning". I understand what it is (looking for all open ports / services on a remote machine), however that begs ...
4
votes
3answers
5k views

Difference between masquerading and replay attacks?

I know that masquerading is to impersonate a false identity and replaying is the same wherein unauthorized person uses the credentials of the authorized one to have the privileges.Then what is the ...
3
votes
3answers
91 views

Is SFTP vulnerable to brute force, bounce, spoof, sniffing and port stealing?

I have been researching FTP and noted that using FTP means you are vulnerable to these types of attacks. I have been looking for an safer alternative and came across SFTP. Is SFTP still vulnerable to ...
-2
votes
1answer
77 views

Clicking a lot of website links in Google Maps, then sent through multiple URL redirects, and lastly to a page that made my laptop start beeping?

I was in Google maps clicking on all the website links listed in the side panel, looking at every website really fast. Note, they were all tattoo parlors. One of the links I clicked bounced me through ...
1
vote
2answers
35 views

Random autofill [closed]

I was trying to pay for something just now, and when I put my name in the chrome autofill came up and I clicked it. The address that showed up was wrong though but corresponded to the postcode of one ...
1
vote
1answer
27 views

How can you spoof a TCP connection to a device that uses the same initial sequence number for each run of a TCP handshake?

So supposing the TCP implementation on a device always uses the same initial sequence number how could you as an off path attacker exploit this to spoof a connection to this device? So in order to do ...
1
vote
1answer
62 views

man in the middle attack over internet

I've performed some man in the middle attacks (arp poisoning) using ettercap, stuffs on kali linux and i know how exactly it is working. but i was wondering if this attack could be even performed ...
2
votes
1answer
83 views

Response on targeted attacks against an individual

I'm now an aim for a targeted attack. Someone tries to gather information about me and tries to get access to my accounts. Some time before he/they've managed to succeed (got all the info from my ...
1
vote
0answers
101 views

What is an Origin Error Attack?

Similar to my previous question here, however I thought it was best to ask two separate questions rather than combining them into one. From The Forrester Wave™: DDoS Services Providers, Q3 2015 ...
5
votes
3answers
5k views

Facebook spam / phishing attempt?

I got this sent by a friend on Facebook and I don't think its a genuine message: ___ shared a link on your Wall. This will leave you speechless) ...
1
vote
1answer
193 views

I need help figuring out the meaning of a potential hijacking script

I am using Ubuntu 13.04. Something really strange happened. I was writing my homework for a Ruby course. I had Sublime Text 2 (a text editor like Notepad, Notepad++, Textmate etc.) opened and was ...
5
votes
4answers
1k views

Is this an attack and how can I fix it?

I don't know where to start in searching the forum for existing threads that might cover my issues. I recently received a spoof email pretending to be from a client for whom I've just started to do ...
13
votes
4answers
2k views

Is it possible to prevent a physical attack on full disk encryption?

I've been researching into some methods to ensure that disk encryption keys can't be stolen, and one that I've come across is called TRESOR. With this kernel patch, you can create a partition that is ...
1
vote
2answers
48 views

Dynamic, Randomized Protocols to Deter Attackers

Imagine a protocol that changed periodically. What if the order of these fields were changed a lot? One point in time the protocol might be { Payload, Checksum, Length, Flags, ID } The next point ...
4
votes
1answer
105 views

“Hacking” account when someone uses your email?

I have, on multiple occasions, received this email from Twitter: Since I have received it multiple times either this person clearly thinks the email is theirs or it's spelled similarly, something to ...
111
votes
9answers
128k views

Can webcams be turned on without the indicator light?

I've made a series of penetration tests in my network and one of the things I've tried was to record webcam and microphone. Recording an end-user's microphone seems to be a stealth thing, but what ...
1
vote
1answer
36 views

a sent message for an unknown number without me sending it

there is a message sent from my iPhone to an international number. but i didn't send it and it doesn't appear in my message history. is this possible? how can it happen?
-1
votes
2answers
79 views

How is it possible to receive port scans with destination IP 0.0.0.0?

In my Amazon EC2 I installed a snort to prevent the attacks. I observed some logs TCP Port Scan Source IP is ISP and destination IP is 0.0.0.0. I think 0.0.0.0 is used for in a local network (routing, ...
2
votes
3answers
73 views

Should it considered a risk if an organization's server OS and version information is leaked? [duplicate]

I am assuming that it should be considered a risk because there may be several security issues of various OSes known to hackers. If a hacker gets access into the victim's network, the extra knowledge ...
4
votes
2answers
56 views

Can an attack that does not change the server state be considered a CSRF attack?

From Wikipedia: A real CSRF vulnerability in uTorrent (CVE-2008-6586) exploited the fact that its web console accessible at localhost:8080 allowed mission-critical actions to be executed as a ...
1
vote
2answers
731 views

Attacking a server on port 80 while only port 22 is open on the firewall

There is a question bugging me a after reading on network security. Theoretical situation: there is a packet-filtering firewall, which only accepts tcp/ip communication with destination port 22 on a ...
46
votes
7answers
9k views

How are GPUs used in brute force attacks?

I have read that GPUs can be used in brute force attacks? But how can this be done and is there a need for any other hardware devices (hard disks for instance)? Note: I'm more interested in web ...
0
votes
0answers
55 views

Prevention of sinkhole attacks

I have read about many approaches to launch and detect sinkhole attacks in wireless (sensor) networks. Yet I couldn't find any (good) articles to read about the prevention/avoidance of sinkhole ...