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

learn more… | top users | synonyms

5
votes
3answers
2k views

System time and certificates

Recently I accidentally changed the system time to a different month, and then I surfed to a secure site. I got a warning from Google Chrome that mentioned my system time and said the certificate ...
2
votes
1answer
264 views

White-Box Cryptography Questions and References

I have recently started reading about White-Box Cryptography and looking at references/papers/web sites. A have a few questions I was hoping to get guidance on. As far as I can tell, WBC has ...
13
votes
5answers
2k views

Securing a laptop against attacks (article)

I came across this article when looking for ways of hardening my laptop, and this guide seemed extremely thorough. It is perhaps overly paranoid, but it will be good to have a guide I can trust should ...
6
votes
3answers
695 views

How dangerous is it to use CSS styles from an untrusted source?

I'm a moderator at a forum. We want to have a new style for the forum. We're thinking about announcing a competition to the users to come up with the best CSS design; we would adopt the best ...
3
votes
3answers
313 views

Why is it necessary to validate data in a servlet obtained by calling HttpSession.getAttribute()?

I am new to WebApp programming and am trying to understand the security implications of not validating data obtained by calling the javax.servlet.http.HttpSession.getAttribute() interface method. I ...
10
votes
4answers
2k views

Possible to prevent Juice Jacking by only connecting USB pins 1 & 4?

According to this accepted answer, there is no phone on the market today that is immune from "Juice Jacking"*. I think an easy way to mitigate this threat is to have a filter that blocks USB pins 2 ...
0
votes
1answer
1k views

How to escape user input in a value of javascript object?

How to properly escape user-controlled input when it's inserted as a value in JSON object? <script> $(document).ready(function() { new MyObject({ key1: "user_input", key2: ...
8
votes
1answer
2k views

Experience with a recent DDoS attack on Apache

I originally posted a question here since I was not familiar with an actual distributed denial of service attack (DDoS) on my server. I noticed that my server is very slow in responding to HTTP ...
3
votes
3answers
974 views

What are methods for preventing browser hooking / drive-by downloads?

This question may be a bit too broad and open ended, however I'm hoping to get some good advice on this. With the advent of BeEF and more and more of the computers in networks being infected just by ...
2
votes
3answers
528 views

What are the risks of a rogue Access Point? What lessons can be learned from the Wifi Pineapple?

I'd like to educate colleagues and peers on rogue access points using the tool "Wifi Pineapple". What are some specific security-related lessons I could demonstrate? If applicable, what are the ...
3
votes
1answer
83 views

Is it possible to verify identity of site that sent request to you?

I'm developing a JS widget that can be embedded by 3rd party websites. When widget is shown, it sends request to my site. When this request is received, I know that it was shown to the user and pay ...
4
votes
3answers
4k views

How to protect myself against paid DDoS services?

I am domestic user and I am getting attacked regularly by a guy that hates me. Here is the background story: that guy uses Skype resolvers (tools offered by paid DDoS services) to find out my IP ...
1
vote
2answers
423 views

Tampering req.getParameter() Vs req.getAttribute() [closed]

Is following code vulnerable? If yes, how it can be exploited? <% Boolean redirectToSomeSite = (Boolean)request.getAttribute("redirectToSomeSite"); String someSiteUrl = ...
3
votes
1answer
2k views

Detect a server supporting SPDY?

With my current interest in the CRIME attack, I am currently trying to check if there actually exits a way to "fingerprint" a server that supports SPDY? My research lead me to believe only that the ...
17
votes
2answers
11k views

Should I disable SSL compression because of CRIME?

I've read CRIME - How to beat the BEAST successor? and a few articles on the subject (linked below) and found no recommendations for system administrators. As a web host, should I disable SSL ...
0
votes
2answers
364 views

How to verify correct, secure and test setuid?

I've been looking into setuid vulnerabilities. Particularly, I am looking on OS X (10.5+) but other modern *nix distos apply as well. For example, I found a world writable suid file installed by a ...
2
votes
2answers
794 views

Is Drupal's filter_xss enough for filtering HTML?

Drupal has filter_xss function. Is it safe to use for filtering arbitrary user HTML input? If not, what should be used instead when using Drupal 7? This questuion is a duplicate of Drupal's built-in ...
13
votes
6answers
5k 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
147 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
369 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
489 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
58 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
422 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
161 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
400 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
4k 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
780 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
716 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 ...
18
votes
3answers
10k 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
862 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
618 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
4k 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
218 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
13k 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
151 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
681 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
10k 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
614 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
4k 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
289 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
973 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
200 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 ...