prevention of an attack vector (e.g. XSS, HPP, CSRF)

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13
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6answers
4k views

Why is ARP poisoning killing all network activity?

Using ettercap and ARP poisoning, I was able to eavesdrop on other connections, but suddenly I was unable to make any connection to the Internet. To restore Internet connectivity, I had to restart my ...
-2
votes
1answer
146 views

What do I need to worry about when moving from a compromised system to a clean one?

As a result of a targeted attack, my computer was compromised? What should I be worried about when trying to move to a new system and prevent reinfection? I purchased a new clean computer and am ...
5
votes
4answers
362 views

Automating Social Engineering Prevention

Being an advocate for DIO (defensive information operations), I have always been concerned about social engineering and its relation to server security. Giving administrative access to staff members ...
3
votes
3answers
460 views

How can I determine whether a website somehow protects against brute force attacks on my password? (assume I can't create an anonymous account)

After the hack of Mat Honan I studied my own laundry list of accounts I have at the numerous web sites I use. There is one fact that stands out: Many of the websites severely restrict the size and ...
1
vote
1answer
57 views

Dangers of a vulnerability in a local installer?

I sent a message to my dev manager about a buffer overflow in our (widely distributed) installer, and received a response that it didn't matter as it wasn't server code. Other than the fact that if ...
4
votes
2answers
384 views

How effective is changing the MAC address?

Since every vendor has a MAC address range, and Apple has network card models that only they use (Airport), I suppose that it is very easy to identify a network package as coming from an Apple device, ...
-3
votes
3answers
159 views

I use an online email provider - how can I test my password strength?

I want to test my password strength, is there a program out there that can crack my password relatively quickly? I am familiar with BackTrack 5, but I usually use it to test WEP password strength. I ...
-1
votes
1answer
383 views

MITM Attacks over SSL [duplicate]

Possible Duplicate: How might the U.K. Government's proposed internet surveillance equipment “bypass” encryption? If I have a server (call it server 1) set up to receive ...
11
votes
6answers
3k views

How can mini-computers (like Raspberry Pi) be applied to IT security?

It's no secret that thousands of $35 Raspberry Pi (Model B) computers have just shipped to people around the world. With these, and other similar types of computers becoming cheaper and more ...
2
votes
2answers
3k views

IPTables DDoS protection working with per client IP address counter AND UDP

I am looking to protect LAMP server with a software, which will detect above average number of requests from single IP numbers (in this case DNS queries), and add these hosts to IPTables deny chain. ...
1
vote
2answers
717 views

How is iptables useful to prevent attacks against a LAN?

I need some advice securing a LAN using iptables. I've found lots of examples on how to secure single host with iptables, including scanning ports, attacking using ICMP-flood and TCP-flood. These ...
2
votes
4answers
651 views

How password hashing is useful in MITM attack?

Even though I read a lot about hashing and how passwords are protected, I am still confused about it. If passwords are hashed at client side, it will be useless because it can be sniffed and used by ...
17
votes
3answers
9k views

Is there a way to mitigate BEAST without disabling AES completely?

It seems that the easiest way to protect users against the BEAST attack on TLS <= 1.0 is to prefer RC4 or even disable all other (CBC) cipher suites altogether, e.g. by specifying something like ...
6
votes
6answers
825 views

Implications of securing data in RAM

Someone told me that his company is storing all application data (at least the sensitive data I guess) in RAM for security. Their application runs for long periods of time, so data stays in memory for ...
14
votes
3answers
593 views

What prevents people getting charged over NFC in crowded places?

I don't have an NFC-enabled device and I couldn't find any information about this in Google. What is it that protects me against an attacker with a portable NFC terminal charging payments by just ...
4
votes
4answers
3k views

Detecting or preventing process memory injections on Windows (anti-hack)

Standard hacking case. Hack injects into a started game process and writes over process memory using WriteProcessMemory call. The situation is like this: we are hosting a game server clients join ...
-1
votes
1answer
208 views

Impact of attack occured in Radius, DHCP and HTTP servers on VOIP?

Assume we can crash the RADIUS server in a VOIP system. What would be the impact on the confidentiality, integrity, and availability of VOIP service. What would be the impact if the same question if ...
4
votes
4answers
11k views

How to prevent my website from getting malware injection attacks?

My website was banned as a malware website by Google. When I checked the code, I found out that some code injected many files on my server. I cleaned everything manually, edited all files on my server ...
0
votes
0answers
35 views

more justification for the impact scores used by the national vulnerability database [duplicate]

Possible Duplicate: why CVSS give a score of 0.66 for a full impact on CIA? Good day ; the CVSS attributes the following impact values ​​for confidentiality, integrity and availability: ...
-4
votes
2answers
146 views

how to protect a personal computer? [closed]

I am Linux user with no knowledge on security , up to now i dont know that is my system was in attack or not . I havent felt anything wrong with my system . but every Computer user must have some ...
2
votes
2answers
640 views

External IP same as Internal IP security

Where I live my ISP does not give IP addresses out. My external IP address is the same as my external if I plug directly into the wall with no router. My ISP does give everybody a "router", that is ...
7
votes
5answers
9k views

How to trace a DDOS attack on a dedicated server and block it?

I have a dedicated server and I'm hosting a game, and the web page (using Apache) for account registering. The server is being ddosed since 8 months ago till today. I've tried to talk with the server ...
3
votes
1answer
212 views

eBay account compromised/Credit Card used/Hosts files changed

To preface this, I'd just like to let you know that I'd consider myself an intermediate security guy(Definitely not a novice, not yet an expert) I do have a story to tell, and would like to know if ...
6
votes
1answer
5k views

What is packet drop, packet loss and how Packet drop attack works?

I confused with the three terms: Packet drop. Packet loss. Packet drop attack.
0
votes
3answers
592 views

Are Facebook, Yahoo, Google, etc. hackable?

Just to be clear, I am not asking how to hack in these services, I am just curious. Let me try to explain. Since I know a little bit about computers, people automatically assume I know how to have, ...
6
votes
4answers
3k views

Block all BotNets and TOR addresses from accessing our site

I've heard that many DOS attacks and general "black hat hacking" attempts occur over the TOR network. Is it possible for me to dynamically block source IP's by their presence in a BotNet or similar ...
4
votes
4answers
3k views

Using SYN cookies to perform a DOS attack

In my software security class, we had this question: You are the system administrator for a provider that owns a large network (e.g., at least 64,000 IP addresses). Show how you can use SYN ...
2
votes
3answers
274 views

Securing dropdown boxes

I have been creating selection boxes for years, yet I never knew you could modified it with firebug and submit them with nonpermitted values, of course this wouldn't happened if the code was secured. ...
5
votes
2answers
6k views

How can I detect/withstand DNS amplification attack?

I am a developer, and I am trying to get an insight into what could I do to enable my application to withstand a DNS amplification kind of attacks. Would such prevention methods help against DOS type ...
11
votes
2answers
921 views

Interpolique: transparently preventing SQL Injection and XSS with base64 encoding, what happened?

For the keynote at The Next HOPE a couple of years ago, Dan Kaminsky unveiled Interpolique (the talk is really fun btw). The problem he raised was how to defend against injection attacks, including ...
5
votes
4answers
2k views

Most secure data storage?

What is most secure data storage currently available and suggested by specialists, to store digital data in digital medium (without making hard copy of data onto paper or other type of medium, than ...
6
votes
4answers
3k views

How to harden an iPhone/Android app so its tough to reverse-engineer it?

These are the following objectives I have in mind: Make the app hard to crack, as the binary will hold some secret tokens. If it still can be cracked, is there any way the app can tell someone or ...
1
vote
5answers
199 views

How to replace a constant identifier, for a resource on a network, with a variable one?

I guess the example can make it easier. Assume each Client on a network has an identifier(some alphanumeric sequence) which identifies it uniquely on the network. Each time the Client corresponds ...
2
votes
3answers
132 views

I want to implement a new type of security feature over several platforms

I want to make a security feature that will go farther in discouraging people from looking through a secure system or server than what I have seen being implemented. Specifically, is there a way (or ...
2
votes
1answer
580 views

Token Based Authentication & Pass-the-hash Attacks

Do token-based authentication solutions (such as RSA SecurID) mitigate tools like incognito and/or pass-the-hash tools?
4
votes
1answer
194 views

Can I safely post the output of lspci, lsusb, lshw?

I'm having trouble with my SD card, and have been asked to inspect the output of tail -f /var/log/syslog, sudo lspci -v -nn, sudo lsusb, and sudo lshw. tail shows nothing when I insert the card, so ...
3
votes
2answers
169 views

How to demo a new 0-day security product?

We are a development team working on a new 0-day protection security product. We aim to protect against new unknown 0-days attacks against servers. We have a very strong solution ready to demo. The ...
9
votes
2answers
188 views

Should I prevent user from operating with site during some first seconds?

Imagine the following scenario: User is at attacker.com and plays a game there. Just before he clicks at some point he is rerouted to victim.com using browser's history. User thought that he clicked ...
0
votes
2answers
257 views

Any Books/Sites/Writeups on IRC bot Security?

I've written a scriptable IRC Bot and I want to harden it against exploits. To that end I've already written it so that it ignores its own messages (so that, for example, even if it echoes back valid ...
3
votes
1answer
389 views

Can format string exploit bypass the PaX protection?

I'm trying to find info regarding how format string exploit can bypass the PaX protection mechanism. As I understood PaX just features ASLR and NX protection. So I wonder if an attacker should use ...
9
votes
2answers
3k views

Preventing man in the middle attack

I recently did a man in the middle attack on my college LAN (for purely educational purposes:)). I simply wrote a raw socket application that pumped ARP reply packets advertising my MAC address with ...
6
votes
4answers
1k views

Is this type of ARP poisoning attack possible?

I am wondering if it is possible to paralyze a network by sending out a bunch of fake ARP response packets. Some basis: I recently read a moderately detailed description of how ARP and ARP poisoning ...
5
votes
3answers
328 views

How do I defend against known php hacks

I have IPs attempting to probe our web server trying to find open URLs. The two known methods are attempting to find specific nodes on our drupal site, or attempting the ../../../../ trick to try and ...
2
votes
3answers
1k views

how an iframe can cause xsrf?

I know how a form tag is prone to CSRF which does not use any token (or any other challenge-response mechanism) but I was wondering how an iFrame can be used to cause XSRF attack and what would be the ...
8
votes
2answers
1k views

How to defend against SSL-Exhaustion attacks?

The problem of SSL-Exhaustion attacks is well known for years, but nobody really cared until THC released their exploit-tool recently. THC talks about counter measurements in their release: No real ...
1
vote
2answers
247 views

Is the OData Protocol susceptible to Insecure Direct Object References?

The Open Data Protocol or OData is a great protocol created on top of Web Technologies.It uses the URI convention for the data exchange using Atom, JSON and XML. You can use the URI convention ...
6
votes
7answers
907 views

Should I prevent sending of GET requests for urls that are normally operated with POST request?

There is an url that is normally operated using POST requests (i.e. POST request is sent when user submits form). But attacker can form GET request with parameters that are sent in POST request. This ...
8
votes
4answers
257 views

Staying safe, but still connected, at security conferences

If one is to spend some time away from home and work in a hotel environment where neighboring users can at least be presumed to be mischievous (if not actually malicious), what are some measures that ...
6
votes
4answers
504 views

Who sells IP reputation data sets?

I know of many companies that will sell ability to lookup IP/URI reputation. Be it DNSBL, json/*, returnpath, threatstop, surbl, ..., will let me perform lookups for a reasonable fee but, in case of ...
5
votes
5answers
4k views

What kind of attacks against home router's NAT do exist?

I always thought NAT was some kind of a security feature and I still think it is, because if it didn't existed the internet, respectively the clients behind NATs, would be even more insecure, since ...