An attempt by a threat to exploit a weakness in a system.

learn more… | top users | synonyms

19
votes
2answers
6k views

JavaScript Injection using Man in the Middle Attack

Suppose I am connected to a wifi-hotspot hosted by a malicious attacker. Further, suppose that I am accessing a login page of an fictitious email site tmail.com over insecure HTTP connection. My ...
1
vote
2answers
116 views

Does preventing buffer overflow attacks prevent ROP attacks?

Would preventing buffer overflow attacks prevent Return Oriented Programming (ROP) attacks?
1
vote
1answer
104 views

What are the traces of a mysql attack on a server when the attacker has full permissions?

I just turned my server off yesterday, after it began to distribute comment spam across the internet, at an astounding rate over 70 "spams"/min, bottom of the line 1/2 gig ram VPS. I'm still trying to ...
6
votes
2answers
2k views

Using skype for an attack

I am curious about something; let's say someone randomly added me to Skype and tried to initiate a chat with me and I want to know more about them but I am worried if they can do some damage. My ...
0
votes
1answer
296 views

Sniffing external networks from a public network (place)

There is something that I can not understand. If you are preparing, building up an attack from a public place (coffee shop, restaurant ect.). How can you be tracked by law enforcement? I'm asking ...
3
votes
2answers
404 views

If I send 4mbps of data to a friend with 4mbps connection, will I DDoS him?

Suppose my friend has a connection of 4mbps. If I just send him 4mpbs of random data with my server, wouldn't it block his connection? Even if the router has firewalls and closed ports, isn't enough ...
-6
votes
1answer
771 views

How to hack a device if i have thier MAC address [closed]

My wifi is used by many people so i have no proper solution against them ! I can see thier mac address. I want them to stop using my wifi ..
8
votes
3answers
7k views

Why is it so hard to trace origins of DDOS attacks?

According to the July 2009 cyber attacks Wikipedia article, US & South Korean governments suffered a DDOS attack on their websites. However, up till now they have not been able to find any ...
0
votes
2answers
344 views

Google Analytics: Hacked or Ghost Referers?

I posted this question (Hacked or Ghost Referers) on Google groups earlier today, but I also wanted to see if the security experts here have any insight into this behavior. I've got a web application ...
8
votes
7answers
2k views

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

One of my mate, she has a lot of friends on Facebook, uses it for marketing. Her account keeps getting broken into. Her password gets reset and/or gets locked for changing resetting password too many ...
60
votes
7answers
25k views

SQL injection — why isn't escape quotes safe anymore?

Raw SQL When you're writing SQL -- for anything that takes human input really, a lot of things have been done to avoid the injection. Everyone that's heard of SQL injection knows that (I'm going to ...
3
votes
2answers
265 views

Why would an attacker try to guess random email usernames on a small domain?

My mail server has recently come under a very bizarre attack. Every five to ten minutes, a new IP connects to SMTP, attempts to try weird usernames (like pil, bennett, netscape, msfuser, desktop, ...
7
votes
1answer
271 views

What is the name for this type of URL attack?

Say a PHP page accepts URL path as a POST parameter (like the answer to this question): $path = $_POST['url_path']; file_get_contents('http://example.com' . $path); A maliicious user POSTs ...
2
votes
2answers
224 views

How can an attacker access a system with a private IP address? [closed]

I am confused about this concept if a public IP is assigned to my router and my system has private IP address, how an attacker can access my system or can use my system as a BOT. Its a common scenario ...
5
votes
3answers
74 views

Attributing attacks

Neophyte here. I didn't find much googling around, so I was hoping maybe someone here could point me in the right direction towards some literature that discusses this in more depth. It's ...
1
vote
1answer
660 views

POODLE vulnerability solution : Effect on customer or client side

I am using windows server 2008 R2 and I have lot of customers who use windows XP,7 and 8 with some of them still using IE6. So now I want to disable SSL3 and enable TLS 1.1 as a security measure for ...
4
votes
3answers
612 views

An attack from my Employer

I am working in an ISP company as a junior support specialist. Recently, I have a serious suspicions that one of our "head" stuff member is compromising me by being able to control(see) my traffic.. ...
0
votes
1answer
117 views

Why use one URL for all “pages” on my site?

I have heard that I should (A) use one URL for all "pages" on my site, such that what page is shown is determined by the session state, and (B) don't use an extension like .php. One curious fellow ...
3
votes
1answer
172 views

Does TLS fallback only keep from downgrades to SSLv3?

I have read the RFC on this and can't seem to find what I am wanting to know. When implemented, if a client and a server support TLS fallback protection, does it only keep them from downgrading to ...
-6
votes
1answer
109 views

network IDS capabilities for attack detection [closed]

Is a Network Intrusion Detection System (NIDS) (pattern matching, protocol analysis or behavior analysis) able to detect buffer overflow in the network traffic?
1
vote
1answer
169 views

How can the sybil attack be used on a P2P system that implements DHT?

I was reading about the sybil attack and am unclear on some details. After becoming part of the peer-to-peer network, the adversary may then overhear communications or act maliciously. By ...
0
votes
1answer
552 views

Hack to change the webpage of a website? [closed]

Recently, there is a website by Malaysia Airline got hacked and their main page has been defaced, below is a link to that article ...
26
votes
6answers
28k views

Security risk of PING?

I have been told that PING presents a security risk, and it's a good idea to disable/block it on production web servers. Some research tells me that there are indeed security risks. Is it common ...
1
vote
2answers
80 views

CSRF Implementation

I am working on website,where I want include csrf checks by using referrer checks,will this be sufficient way to protect the form from csrf attack? if not what an attacker can do to bypass it?
1
vote
2answers
196 views

Does “Magic Numbers” weaken encryption?

I was wandering at superuser and I found this question: Compress and then encrypt, or vice-versa? Nearly all files have a Magic Number at a certain position in them. So, I wonder if I can attack (to ...
0
votes
3answers
9k views

Wife was conned into allowing her computer to be hacked, what do I do? [closed]

My wife had a popup on her old Windows Vista laptop (which I've been threatening to switch to Ubuntu Linux). It appeared to come from our ISP, and informed her that she was hacked, and to call a ...
0
votes
2answers
1k views

DNS Cache Poisoning as a Foil to SSL

I recently learned a bit more about DNS cache poisoning, and my understanding of the basic way it works is by editing the DNS cache so that when the victim types in, say, www.google.com they get the ...
1
vote
2answers
117 views

Reasonable source of old proof-of-concept attacks

I am relatively new to the area of cyber security but have a reasonable knowledge of several programming languages, assembly (x86 in particular) and scripting. In light of the recent Shellshock and ...
0
votes
2answers
313 views

Monitor SSH traffic

Hi Folks, I was monitoring my SSH port with tcpdump and have had a lot of activity as expected. When I look at the traffic I get the above image. What does it mean? Thanks
0
votes
1answer
85 views

Have i been phished? [closed]

I recently opened a link from a "friend", while I was on my workplace. It was some really simple stupid game "Super Mario" type. I opened it, played for 10 seconds and closed the link. What felt ...
0
votes
1answer
82 views

MITRE's UEFI 'Extreme Privilege Escalation' and HP's SureStart [closed]

This is MITRE's powerpoint presentation version of their report: http://www.mitre.org/sites/default/files/publications/14-2221-extreme-escalation-presentation.pdf Page 54 is a straight pull from HP ...
2
votes
0answers
96 views

Case Studies of high profile hacks [closed]

Every hack happens because of a form of security vulnerability or another, and I feel that the best way to avoid/fix these vulnerabilities is to learn about them. Is there anywhere on the internet ...
1
vote
0answers
607 views

How Modification attacks works?

Theoretically... In Active attacks we have "modification attack"...ie "In a message modification attack, an intruder alters packet header addresses to direct a message to a different destination or ...
0
votes
3answers
146 views

Can the packets of a wireless network be sniffed by a user who is not present in that network?

1.If an user knows the frequency used by a wireless network, is he able to collect the packets from that network? Those packets may be encrypted, but can he collect those packets? 2.If the user has ...
10
votes
5answers
3k views

Using Google Search results to determine password strength

Google is a repository of Internet data, as it indexes tremendous amount of data. It uses a prediction service to determine the rest of the search query. With such a huge repository in place, can we ...
5
votes
1answer
2k views

Can a malicious Tor exit node perform a HTTPS man-in-the-middle attack to see/modify your HTTPS traffic?

Let's say I am browsing the Internet using Tor - visiting https://example.com/login.php - and the NSA is operating the Tor exit node which I am currently routed to use. Can that NSA exit relay swap ...
1
vote
1answer
138 views

Slow HTTP DoS Mechanics

Our firewall detected and blocked a Slow HTTP DoS the other day. There were only a few attempts in the log. It wasn't a full on attack (there would be more traffic). My question is...if I'm an ...
2
votes
3answers
128 views

Security coding training best approach

To train the development team, there are various options one can take: inhouse presentation with code samples, CBTs so developers do it at their best time, instructor-led courses onsite or inhouse ...
3
votes
2answers
101 views

many csh http shellshock attacks

I administrate a public server that receives about a 100 csh HTTP shell shock per day from different sources. It is an HTTP GET Method that that requests the /cgi-bin/authLogin.cgi URI. Knowing that ...
6
votes
2answers
391 views

Tor versus direct monitoring

I know if I use Tor and maybe made a tweet, it gives the government a really tough time tracing the originator. But what if like a police car was directly outside my home for instance. Is it still ...
2
votes
4answers
164 views

Is it possible to communicate securely entirely over the internet given a global, resourceful man in the middle?

Assuming a global, resourceful man in the middle, is it possible to Securely communicate (I don't mean storing encrypted data off site) completely establishing and sending messages over the internet ...
4
votes
2answers
192 views

How to securely install software on Ubuntu?

How to install a software like Sublime Text on Ubuntu 14.04 LTS and mitigate against a MITM attack? There is a PPA available, but the PPA must be added manually. I don't see any PGP keys or MD5 ...
14
votes
2answers
536 views

Concrete figures on password cracking in the wild

While password guessing is a science, not every attacker out there is up-to-date with the latest advances or cares to invest in GPUs or FPGAs. It's easy enough to test online password guessing ...
1
vote
1answer
66 views

Why do heap overflows/int overflows/stack overflows/buffer overflows only happen in higher addresses?

I read somewhere that these type of attacks are susceptible to addresses that are higher and not lower in the stack/heap/buffer. Why is this?
3
votes
2answers
201 views

John the Ripper not identifying a password contained in the username?

I have uploaded a screenshot of what exactly is going on, here: http://i.imgur.com/bJSv7C8.png I can see that single-crack mode includes a rule that looks at the username, and "slices" it to identify ...
3
votes
4answers
1k views

Comparing penetration testing suites

I've been using Backtrack for a while now. I was wondering if there is anything better, or on par with, that is worth looking into. Thoughts?
1
vote
0answers
103 views

Example of a hacking attempt that failed because of a bug?

We hear all the time in popular press (and increasingly, in government publications + scholarly articles) about how "cyberattacks" make us insecure, because we have so many vulnerabilities (mostly ...
0
votes
1answer
241 views

How to prevent outgoing UDP attacks?

My server has been the target from hackers 3 times in the last month, and the attack seem to follow the same pattern. The attack another site from my server using UDP connection. The report from my ...
1
vote
3answers
768 views

Are Facebook, Yahoo, Google, etc. hackable?

What I would consider to be hacking one of these services is something along the lines of cracking databases (or I think what would be databases). In reality, I have no idea how sites like these store ...
2
votes
2answers
108 views

How would an attacker know the Gateway IP's of 2 VPN endpoints?

My office has two Sonicwall Routers each at a different physical location and with two different ISPs. There is an SSL-VPN tunnel between the two. Today I noticed that the same Chinese IP address ...