The elimination or reduction of the frequency, magnitude, or severity of exposure to risks, or minimization of the potential impact of a threat or warning.

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2
votes
0answers
47 views

Roboo HTTP bot mitigation vs alternatives (senginx, possible others)? [on hold]

I've been tasked with working out a bot mitigation facility here. So far this seems to be what pops up in google for "HTTP Bot mitigation": https://github.com/yuri-gushin/Roboo I've been perusing ...
14
votes
2answers
2k views

Linux password changed. Is this an attack or a hardware glitch?

My Linux (Ubuntu 12.04) password suddenly changed last night and I'm not sure if this is an attack or just a hardware/user error. This is on a personal/non-server box. Several strange events led up to ...
0
votes
3answers
208 views

Installed some software over a public insecure wireless network — should I consider myself compromised?

A couple months earlier, I made the mistake of downloading some software over an insecure wireless network and running it without checking its integrity. I am now considering reinstalling my system, ...
-1
votes
1answer
127 views

How do I force kill an OWA, Activesync, or Outlook session?

A user with a BYOD is still able to access the email system, even after the user account has been disabled and password changed. Since it's clear that a re-authentication event doesn't continually ...
0
votes
3answers
51 views

How can I mitigate attacks that rely on poisoned data as a developer?

A few years ago, there was a high-profile attack on a Wired editor, where the hackers added a credit card to the target's amazon account, then used that self-added credit card to gain access to the ...
7
votes
1answer
87 views

What considerations should apply for self service Renewing, Revoking, or Unrevoking a certificate?

I need to design a self service portal for renewing, revoking, and unrevoking a certificate and have come up with the following rules*: Renewal Certificates have a short term validity and need to ...
2
votes
2answers
71 views

What's the mitigation strategy for when a CA's private key is stolen?

I'm new to SSL/TSL and was wondering if you could walk me through the following scenario. Scenario Let's say I am one of a thousand websites that has a certificate signed by some certificate ...
3
votes
1answer
61 views

What crypto prevents & detects “invisible” CAs? (e.g. in X509v4)

For this question, I'm calling an "invisible CA" one that Is signed by a root ca and exists as a 2nd or 3rd tier Is valid, not expired or revoked Has a different Public key than one that is ...
2
votes
2answers
359 views

How do I Mitigate Directory Traversal when User-Supplied Input is a Mandatory Business Case?

I have an instance where we have an application that requires the ability to set up sftp commands that are specified by administrative users. They are configured through the front-end of the ...
14
votes
9answers
12k views

Encrypting files on Google Drive

It's my understanding files kept on Google Drive are not protected. I would like to have them encrypted so that to be able to view or modify them one must enter a password. I foresee a potential ...
0
votes
1answer
190 views

Cryptic threat names

I have logs from a security appliance from Damballa which has cryptic names for threats observed in a network which I am trying to make sense of. Some examples of these threats are "RedTreeBruisers" , ...
6
votes
2answers
455 views

Stolen Laptop - Next steps

My laptop (modded 2007 Macbook Pro) was stolen 2 days ago when I didn't pay attention to my backpack in a tourist spot in Europe and while I'm quite certain they won't have much use for it (the apple ...
-1
votes
1answer
234 views

How secure are the new TLDs ( .us, .io, …) and do they compare to .com? [closed]

The introduction of the new top level domains (TLDs) such as .music, .books, etc. will increase the number of people and organisations adding and removing entries into the root DNS servers (.) for ...
1
vote
1answer
325 views

How should developers handle Form POST variables that conflict with route variables?

In ASP.NET MVC, when I perform a HTTP post to /controller/action/UserID ... and have a corresponding route /controller/action/{UserID} ... and if I do a Form POST, the POSTed data UserID ...
2
votes
3answers
1k views

How to mitigate SSL based DDoS attacks?

as you probably know the problem with SSL based DDoS attacks is, that the traffic cannot be analysed and filtered by a DDoS mitigation service provider such as Prolexic, Akamai, Radware, etc. without ...
5
votes
2answers
3k views

How effective is the iOS “Send All Traffic to VPN” setting at deterring Wifi-based attacks?

iOS version 5 and newer has a setting for VPNs to "Send All Traffic" over that VPN. I think that sending all data to a trusted VPN target would ensure privacy of all communication sent over that WiFi ...
-2
votes
1answer
99 views

What are the security measures to be taken before launching a site with credit card payments? [closed]

We just completed functionality testing of our new e-commerce site and going to launch.We are accepting credit card payments. I'm really concerned about it's security.What are the precautions to be ...
9
votes
1answer
835 views

Do any Exchange hardening guidelines recommend disabling OWA Webready? Should they?

For the fourth time in over a year, Exchange OWA has put our internal network at risk due to a remote code execution flaw that exists on the server runtime. This risk is compounded by the fact ...
1
vote
2answers
103 views

Malware for testing [duplicate]

IS there websites and places where you can download all types of malware that you can run and test the security setup of your system? I am currently playing around with UAC+EMET4+MSE and would like ...
3
votes
2answers
281 views

How to intercept url to disallow Forced Browsing in simple Dynamic Web Project?

I found an issue related to Forced Browsing in my web-application.And I was able to verify that my static content(like text document...mainly help documents) can be accessed by simply hitting the URL ...
5
votes
2answers
498 views

How to ensure that files uploaded by users do not contain any XSS code

I have been working on providing the security related to the XSS attacks. My website only allows following mime-types: XML, CSV, HTML, PLAIN, VND_WAP_WML, APPLICATION_ZIP, APPLICATION_PDF, ...
6
votes
2answers
182 views

Should I test my SSL certificate for “RSA Shared Primes” before using it?

There are several papers from 2012 that say it's possible to factor several moduli by factoring shared primes. The link above includes python sourcecode to verify and test for this fact. Given this ...
2
votes
1answer
315 views

Are GET, POST and windows.location vulnerable to XSS in a Wordpress theme?

I created a Wordpress theme for my client. He told me that he scanned my theme with a vulnerability scanner, and that it has security issues with the GET and windows.location methods. Is this really ...
4
votes
1answer
203 views

ASLR Randomization BSS

When I asked this question before, it was close and voted negative, I definitely feel bad about it. But I would really like to know the answer, so I ll make it more clear this time. Here is some ...
0
votes
2answers
246 views

Are there any HTTP servers that can detect two cookies with the same name, but issued from different subdomains?

As a follow up to the Related Domain Cookie Attack question, I'd like to see if there are any servers that are able to detect instances where multiple cookies are sent from multiple domains. In other ...
6
votes
1answer
100 views

What are Non-linear/backward overwrites?

I read some slides from the Black Hat USA 2012 conference, and I stumbled across the term non-­linear/backward overwrite, mentioned on slide 5 of the Exploit Mitigation Improvements in Windows 8 by ...
9
votes
4answers
417 views

How to stop/detect someone else registering a certificate for my domain

With the proliferation of low-cost automated CAs what can be done to mitigate the attack of someone doing a spear phishing attack to get a login to our webmail system, then using an automated service ...
6
votes
2answers
1k views

How do I block LinkedIn from extracting data from Microsoft Exchange Server?

LinkedIn now offers the ability to take a real user and password from the end user and connect to Exchange Server for the purpose of importing contacts into their system. (To do this yourself, click ...
4
votes
1answer
186 views

Switching to new encryption method (without losing data?)

Let's say you have a website that provides a service of some kind. Users can log in, they can store some kind of data, and there's various types of encryption in place to keep it all safe. Passwords ...
5
votes
1answer
294 views

Are latency based Proof-of-Work systems capable of preventing DDoS attacks on popular hidden tor services (.onion websites)?

I was reading an interesting article found here: http://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-703.pdf It's titled "Lazy Susan: dumb waiting as proof of work". It suggested the following in section ...
8
votes
3answers
3k views

Preventing a spoofing man in the middle attack?

I was humming along with my usual routine of listening to old Defcon videos trying to understand some of the basics of what's going on in the IT Security world, when I came across one explaining man ...
22
votes
7answers
16k views

DDoS - Impossible to stop?

Is it possible - in theory - to stop1 a DDoS attack of any size? Many people claim it's impossible to stop DDoS attacks and tell me I just shouldn't mess with the wrong people on the internet. But ...
3
votes
4answers
523 views

If an ATM is stolen, how easy can the personal information of the users be recovered?

ATMs get occasionally stolen. How easy would be for the thiefs to retieve the PINs and other information of the users that have previously used the ATM? Is there a periodic wipe of all ...
4
votes
3answers
2k views

How will IPv6 affect DDoS mitigation techniques?

IPv6 introduces a much larger address space than IPv4 and with it there are many new techniques in creating and mitigating DDoS attacks. What are some examples of risks and mitigations? For example, ...
4
votes
3answers
1k views

Is there any way I can block (or conditionally approve of) iFrames on the client side?

Given that iFrames are used in many common exploits, I'd like to conditionally disable iFrames except for sites that require it such as GMail, or MasterCard SecureCode. I also suspect the ...
1
vote
2answers
102 views

How do I sanitize and check large numbers that will be sent to an unmanaged BigNum library like GMP?

I need to process data that is sent by users in a LargeNumber format. My current choices are BigInteger (.Net Managed Code) IntX (Managed Code, faster for some operations) GMP / MPIR (Unmanaged ...
8
votes
2answers
449 views

How to keep using Java 6 securely, despite its unpatch vulnerabilities

Given that Java 6 is now deprecated by Oracle and there recently has been notification of a 0day (that will exist forever now that Oracle is not patching JRE6), what can we do to prevent drive-by ...
1
vote
1answer
328 views

Can a Javascript - WebGL proof of work system prevent website spam?

Is it a good idea to come up with a Javascript-based Proof of Work system to reduce spam on forums, and other websites? This idea would be similar to HashCash, but the computation would be based on ...
7
votes
2answers
1k views

What unique risks does MVC model binding bring to a website? What additional vigilance is needed?

From what I understand, "model binding" is where a website based on ASP.NET MVC or Ruby on Rails (there are others...) takes parameters in HTTP's GET statement and passes them as variables to code ...
0
votes
1answer
68 views

Relative costs involved in making changes to the current organisational security

I need help understanding what is required by the phrase "a comparison of the relative costs involved in making changes to the current organizational security procedures". Am I to compare the cost ...
1
vote
2answers
280 views

Do XBAP applications have the same vulnerabilities as Java Web Apps?

In response to the popular decision in disabling Java Web Apps, there has been very little mention of XBAP applications. XBAP applications are similar to Silverlight but it offers more options to ...
5
votes
1answer
4k views

What damage could be done if a malicious certificate had an identical “Subject Key Identifier”?

I'm looking at the the Subject Key Identifier attribute of a CA certificate and am trying to understand the role it plays in validation and infer how validating client software could get it wrong. ...
4
votes
2answers
380 views

Any real world examples of GPS location data being used with authentication?

Are there any examples of how GPS coordinate (or any location data really) can be used to detect suspicious locations or validate well known locations? Specifically Highlighting new or unusual ...
24
votes
4answers
11k views

What can an attacker do with Bluetooth and how should it be mitigated?

What are the security risks of Bluetooth and what technologies and best practices should be used to protect my device? What can an attacker do once a malicious device is paired with mine? ...
3
votes
1answer
383 views

Mitigation Strategies for Response Spliting Attack

I am not going into basics of HTTP response splitting attack as above figure completing describes the working of such a attack. Previous Post have also discussed working of such a attack ASP.NET ...
4
votes
1answer
826 views

Where can a virus or other malware “hide” on common PC and Mac hardware?

I'm looking for a detailed list of locations that viruses can "hide" in modern hardware even after a reboot. Some things that come to mind include Boot BIOS/Firmware CPU Microcode Connected PCI ...
7
votes
1answer
807 views

Have any viruses leveraging the GPU been discovered in the wild? What is the mitigation?

This news article from 2010 discusses how a GPU can be used by a virus to avoid detection by common anti-malware/anti-virus software. The idea is to obfuscate the virus payload and leverage the GPU's ...
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 ...
2
votes
3answers
545 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 ...
8
votes
2answers
270 views

How to mitigate the risk of a continuous integration service security breach?

We are using a Continuous Integration service to automatically run our product test suite. Every time we push code to our central Git repository production branch, the CI services is notified and ...