0
votes
1answer
33 views

PCI questions regarding software

As a software company who is looking at writing something that could handle debit cards can I self certify my software or do I have to have it tested by a 3rd party company?
1
vote
1answer
1k views

How to view WiFi traffic using Wireshark on a 3rd party?

I am trying to look at traffic between my phone and the outside world, and for whatever reason I can't see the outside world's traffic coming in. I am running Wireshark on a Kali box, I turned on the ...
-1
votes
2answers
267 views

If md5 is only insecure because of its speed, why doesn't this workaround make it reasonably secure?

I'm going to preface this by saying I have absolutely no clue when it comes to cryptography, but I'm posting this question because I'm very interested and I have no doubt there are some smart people ...
0
votes
2answers
173 views

For a computer client, is physical security the most important measure?

Is being online all the time the root of all evil, when it comes down to private computer clients security? Would a not-always-connected-to-the-internet system, solve most of our problems? In a ...
1
vote
1answer
888 views

Physical vs Logical - Location/Address

According to the CJIS Security Policy - Access Enforcement The information system shall enforce assigned authorizations for controlling access to the system and contained information. The ...
0
votes
3answers
280 views

Next steps to get rid of malware? [duplicate]

My father in law just had a problem,He clicked on a link in an email (he was using gmail on the version 35.0.1916.114m of Chrome), and suddenly the computer sort of went black, and possibly something ...
1
vote
0answers
85 views

DLP for Phone calls [closed]

I would like to know if there is a DLP system that can monitor phone conversation, in order to search for sensitive data leakage by the company users to external users. We know NSA does that :) Is ...
5
votes
1answer
192 views

Fastest public-key algorithm for testing purposes

As part of an automated test suite I need to run a lot of gpg --encrypt and gpg --decrypt processes. In order to make each invocation of gpg --encrypt and gpg --decrypt faster, I would like to use a ...
2
votes
1answer
2k views

Are legal notices in a login banner legally significant in terms of computer misuse?

Is there any case-law where having or not having a legal notice (example here) in the login banner of a system of nay kind made a difference in prosecution? The question is in consideration both of "...
0
votes
2answers
677 views

Checking if a server is compromised

I do free/low-cost web/shell hosting as a non-profit organization (With a the same friend and co-founder) since 2007. We're on CentOS 6 + CPanel, and unfortunately we're still funding the ...
0
votes
1answer
143 views

How can I tell if my ISP account password is encrypted?

How can I be sure my ISP encrypts my account password? I found out accidentally that mine did not. I had called to report an interruption in service, and in the process of "troubleshooting", the ...
12
votes
5answers
10k views

How to safely store sensitive data like a social security number?

I am looking for a way to safely store personal information with low entropy safely. I have the following requirements for the data: Must be able to search (i.e. to look up an existing piece of ...
0
votes
2answers
496 views

Way to decode an encoded payload [closed]

I am facing an XSS vulnerability in my ASP.Net Web application where the malicious code may be encrypted and html encoded Bottomline: I am trying to prevent XSS via code obfuscation. Question: I ...
1
vote
1answer
65 views

How does OpenVPN handle previously established connections?

Started using OpenVPN on my desktop computer and monitored the traffic with Microsoft network monitor. What I noticed, is that when the openvpn session is initialized, only connections established ...
2
votes
1answer
598 views

How could the Skype app log me out from my Facebook account on OSX? Isn't this a huge security flaw?

According to this post (and to my personal experience), installing the Skype app on Facebook and the Skype client on OSX Mavericks will result in you being logged out from Facebook every time you ...
9
votes
1answer
15k views

SSL certificate chain verification

After reading many articles and watching many tutorials I decided to be specific because there are some things about SSL certificate chain verification and SSL cetificate verification in general that ...
2
votes
2answers
621 views

How does Google track a user?

Some days ago, I was studying Web Programming for academic purposes. So I was learning SQL Injection by applying it on a sample website sqlzoo.net/hack/ But soon after it, in the Google ads on every ...
0
votes
1answer
211 views

Router level filtering on home network [closed]

I want to block some part of a website or some videos from dailymotion or other site video sites. Type of network I have 7-8 devices(PCs, Mobiles, iPhones & tablets) all connected to a router (...
1
vote
2answers
89 views

A manual function for hasing identity?

I hope you won't close the question. Even though there are no computers involved, it is still about information and security, and I think that security experts are the ones who will be able to help ...
2
votes
3answers
309 views

Are file attachments “unsafe”?

The management at work are asking, "How can we send files easily and safely to each other?", arguing that: Putting attachments in email is not safe. They want to send links instead They want to ...
0
votes
2answers
363 views

Why do file storage sites have a long unique id for their download links?

I'm creating a file storage site and what I would do is just have the download links format as: https://www.domain.com/[id]/[file name] //id would just be 1, 2, 3 etc. Dropbox and many others have ...
0
votes
1answer
1k views

copy protection (or licensing) mechanism for an android app

I am trying to implement a copy protection (or licensing) mechanism for an android app. The app is not distributed through Google Play or other online market and instead it is distributed through ...
1
vote
1answer
144 views

Are there any tools/methods to probe a web app from diffferent IPs?

I am currently reading "Metasploit: The Penetration Tester's Guide" and I came across the following paragraph in the book (in the 1st chapter) During intelligence gathering, you attempt to ...
0
votes
1answer
893 views

Resources for pentesting cloud based services/web-apps?

I want to know about some of the good resources for pen-testing cloud based services or web-apps (such as AWS). I googled for it but there are really few good resources out there. For example, I liked ...
3
votes
3answers
374 views

Is login limiting still needed if we employ multi-factor authentication?

The status quo is that most online websites limit login attempts per IP address, or even per account since some attackers possess huge amounts of IP addresses. OWASP declares: When multi-factor ...
4
votes
2answers
676 views

Multiple gateways (Whonix with Tails)?

I've been reading Whonix's documentation and threads here to be more anonymous and secure. For the best anonymity Whonix recommends having two different computers, one being the gateway and the other ...
0
votes
1answer
183 views

Can a nessus scan running on top of a Windows OS do full internal scans of devices using ssh?

I am wondering if I did a Nessus scan using a Windows machine how it would log in to a Linux based device. Windows does not have a native ssh client. I am aware that Nessus will log into systems ...
0
votes
1answer
190 views

ChangeCipherSpec Authentication

According to RFC 5246, 7.1. Change Cipher Spec Protocol: The ChangeCipherSpec message is sent during the handshake after the security parameters have been agreed upon, but before the verifying ...
-2
votes
1answer
319 views

which antivirus is best for my laptop? [closed]

I want to buy a antivirus for my laptop.but I am in a fix.I want to buy such a antivirus that doesn't slow my laptop much.laptop configaration :processor core i5,Ram 4GB,operating system windows 7।...
31
votes
4answers
14k views

How to store credit card information for repeated transactions and still be PCI compliant?

I'm overhauling our absolute time-bomb of an order processing system that would put us out of business tomorrow were we audited for PCI compliance. It's so amateur it's scary. I'm planning on making ...
3
votes
7answers
838 views

Are URL shorteners “vulnerable” due to open redirects?

The OWASP state that open redirect is a vulnerability: An open redirect is an application that takes a parameter and redirects a user to the parameter value without any validation. This ...
-1
votes
1answer
71 views

What are relation between security services? [closed]

message confidentiality message integrity message authentication non-repudiation The 4 services are related in the sense that one services often implies/provides another. Indicate for each service ...
1
vote
3answers
684 views

What exactly does one get from a Nmap Scan?

I know nmap is a port scanner and its output shows all the open ports, the services running on those ports, the underlying OS and technology, etc. What should one take from this result in easiest ...
4
votes
5answers
4k views

Is MAC address filtering effective on a wifi router? [closed]

I want to improve the security of my home wifi. My neighbor wants to crack my Wi-Fi password with a nutcracker. I tried to activate the protection by MAC address, but now my laptop and smartphone ...
4
votes
1answer
180 views

Does SSH authorized_keys violate the principle of “re-authenticate before password change”?

It is generally accepted that password change mechanisms should ask the user for their old password (e.g. OWASP) The reason being that an attacker who has temporary access to a user's session (be it ...
0
votes
0answers
318 views

CAS protection against CSRF attacks

A website based on Apache Struts uses central authentication service (cas) for login. I'd like to know if additional csrf protection needs to be provided with Struts in case cas doesn't provide that. ...
2
votes
3answers
225 views

List of upgradable softwares vulnerable to MitM attacks

I was wondering, a lot of software nowadays automatically connect to a server at launch to check for updates, even basic software, and, to my knowledge, this is a new trend. Before you had to download ...
1
vote
1answer
384 views

How are private keys (sMIME, PGP, etc) synchronized across a user's devices?

Given that user needs to store a copy of the same private key on each of his devices (in order to decrypt email and other data encrypted with the public key) ... what are some general techniques for ...
1
vote
0answers
135 views

Is it possible to prevent attackers from destroying sessions using cookie tossing and cookie overflow attacks?

I won't really go into details of how cookie tossing and cookie overflow attacks work, because this answer explains it perfectly. This post on github explains some mitigation strategies, but does not ...
1
vote
1answer
160 views

Is it Safe to Copy a Private Key Using SCP?

Is it safe to copy a private key from one computer to another over SCP? Does this depend on whether you use the same key to authenticate the transfer?
11
votes
2answers
930 views

SSH connection attempts from China show different key; is China doing a MITM attack on SSH traffic?

I have a server located in the USA and SSH to it from various places around the world. When I SSH in from a computer I have never used before, I'll see something like this: The authenticity of host '...
0
votes
2answers
893 views

Heartbleed check for mobile and mobile apps

I have run a heartbleed detector from Lookout on my Android phone. It says: The version of openSSL is affected by the heartbleed bug but the vulnerable behaviour is not enabled. What does it ...
7
votes
2answers
4k views

Double Submit Cookies vulnerabilities

Is the Double Submit Cookies mechanism vulnerable anything other than XSS and sub-domain attacks? All CSRF protection mechanisms are vulnerable to XSS, so that's nothing new. I'm just wondering if I ...
0
votes
2answers
150 views

Manipulating data during a MiTM

I'm trying to learn some attack methods by myself and I have hit a wall where I can't find any information. I have successfully performed an ARP MiTM between 2 systems and I am able to sniff the ...
1
vote
0answers
212 views

Can one scan multiple websites for tracking cookies and beacons?

Are there any tools or techniques that allow a scan of multiple sites for the use of tracking cookies, beacons, web bugs, or offsite javascript includes? As far as I can tell, major web application ...
4
votes
1answer
2k views

What is “Multi-Protocol Unified Hello” and what are the impacts of disabling/enabling it?

This article describes how to disable old versions of TLS, but in addition to doing so, "Multi-Protocol Unified Hello" is also disabled. # Disable Multi-Protocol Unified Hello md 'HKLM:\SYSTEM\...
5
votes
4answers
4k views

How widely deployed is TLS with cipher ECDHE?

Microsoft deployed a patch for Windows 2012 R2 and Windows 8.1 that adds the following ciphers. Cipher suite Exchange Encryption Hash TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 DH ...
1
vote
1answer
804 views

Cannot get access into a vulnerable Windows 2000 (MS03_026)

I'm trying to get access into a Windows 2000 server through the vulnerability MS03_026. An exploit is provided by Metasploit but I don't know why it isn't working. After filling the options (basically ...
1
vote
1answer
221 views

Good resources on ACH/banking details security?

In our web application, we allow customers to enter their bank account information as a method of payment (account number, routing number, bank name). This information goes nowhere at all; it's up to ...
1
vote
1answer
852 views

CSRF Token Stealing

I came across this link that dicusses how an attacker could exploit access control allow origin to get an anti-CSRF token: http://yossi-yakubov.blogspot.com/2011/09/bypassing-token-protection-against-...

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