-3
votes
1answer
105 views

For which time-frame should we assume quantum computers? [closed]

It is generally known that we choose our key-lengths, so they are unbreakable in a specific time frame. For example we choose 112 bit keys (=2048-bit RSA) to protect data for the next few years and we ...
8
votes
4answers
1k views

Why are there very expensive and cheap SSL same type certificates? [duplicate]

I am about to launch an online shopping site (currently running http) and I was thinking heavily of moving to SSL which includes a green bar, because this is very important. However, when I first ...
1
vote
1answer
303 views

Using Tor browser to use YouTube and account security

YouTube is not available in my country, but I want to make an account on YouTube and use it. I'm not interested in protecting my identity. It is fine if anyone can monitor it. The thing I'm interested ...
-4
votes
2answers
76 views

How does the password become 30,000 times stronger?

This google support page says: For example, an eight-character password with numbers, symbols and mixed-case letters is harder to guess because it has 30,000 times as many possible combinations ...
84
votes
11answers
16k views

Password rules: Should I disallow “leetspeak” dictionary passwords like XKCD's Tr0ub4dor&3

TLDR: We already require two-factor authentication for some users. I'm hashing, salting, and doing things to encourage long passphrases. I'm not interested in the merits of password complexity rules ...
1
vote
1answer
55 views

New SSL certificate not being trusted on all clients

I just got an old SSL cert renewed by GoDaddy. It works fine on most clients I've seen. However on some of our more restricted computers there is an issue. These computers have GPO's set to block ...
-1
votes
1answer
94 views

User account password hashing [duplicate]

We are developing a mobile app that includes a user account system. Currently, we have a system password flow like this: User enters password -> SHA-256 HMAC hash with key -> server -> SHA-256 ...
0
votes
1answer
88 views

Should a Web Search with Evernote results be a concern?

While using a Chromium based browser (Chromodo) and doing a regular Google search, Evernote is now appearing on the side with "related results in your notes". Does anyone know how they are doing it?...
5
votes
2answers
77 views

Understanding digitial certifications

q1) Does that mean that every time information is exchanged, both the original data + digital certification is sent? Meaning data + signature for each and every exchange. q2) Can any kind soul here ...
0
votes
2answers
432 views

What certifications do I need to become a Malware Analyst? [closed]

I've previously posted here on how to get started as a malware analyst, and wanted to say thanks on getting me started. How much do certifications help me on my resume and which one(s) should I get? ...
0
votes
3answers
826 views

Is it possible to get Network Domain from Client with PHP or Apache? [closed]

I'm working on a solution to identify client Network Domain or Workgroup in a private network. Based on it, I must change some access permissions. I can't do that through IP address because it isn't ...
1
vote
1answer
215 views

What is my recourse if someone made a gmail account with my name? [closed]

Much of my personal information is available online. That is not a particular issue for me, but someone used my name to make a gmail account with my specific name on it (it is an unusual name), and ...
-6
votes
1answer
93 views

Is this an attack [closed]

Original site: ---topbargains-com-au A fake replica: --topbargain-org How dangerous is this? Have they copied the whole database? Edit: Removed the URLs to satisfy a spam allegation Edit: The fake ...
2
votes
3answers
325 views

How does a CA send a digital certificate?

I would like to know after approving the Certificate signing request, does the Certificate Authority send the Digital certificate to the applicant by converting the digital certificate to PEM format ...
0
votes
1answer
11k views

Unsolicited SMS from Facebook [closed]

I got the following SMS from number 32665 (FBOOK): "Confirmed! To edit SMS preferences go to m.facebook.com/settings. To turn off all SMS messages reply stop. Reply help for other option. SMS ...
1
vote
2answers
195 views

How to make sure my data is secure even if someone gains physical access?

I've been reading up on how to secure my data if someone has gained physical access to the machine, e.g. stolen it. And that seems like a very hard thing to do, as indicated by a number of posts. It ...
1
vote
2answers
846 views

How do I perform a legal SSL MitM attack for my company?

I have been given a task to test some of our company's security. I have SSL stripped before but on a very basic level and now days with the security is a bit harder. I want to allow all HTTPS traffic ...
1
vote
1answer
90 views

Reverse Proxy SSL container

Technically and security wise, can a reverse proxy act as a "container" for SSL certs ? Meaning, for example currently my web server is running on ssl (https). Can I move the SSL cert to the reverse ...
5
votes
1answer
254 views

Is WebRTC still leaking my IP addresses in incognito or private browsing mode?

WebRTC can leak your private IP address, even though you are using a VPN, from what I learn here. Am I protected against this information leak affecting my privacy, when I'm using the incognito or ...
1
vote
1answer
33 views

Does Perl's unpack function have format vulnerabilities?

I'm using Perl for the first time for production software and I have some trust issues with it. When I use the unpack() function, is it safe to use user input in the TEMPLATE string? I'm using a ...
1
vote
1answer
398 views

Create Public Key using OpenSSL instead of PuTTYgen for PKCS#8

I'm trying to create a public key pair for ssh-rsa authentication. If I'm using puttygen.exe, the "OpenSSH authorized_keys file" string looks like this: "ssh-rsa AAAAB3 ... 6yIK9Nbw== rsa-key-...
-1
votes
1answer
82 views

indicators of compromise via email servers

Malicious files are commonly infiltrated on to the network via email attachments. Besides awareness and education to my staff to refrain from clicking on suspicious attachments, I would also like to ...
1
vote
1answer
277 views

Decrypt a file by knowing the original content [duplicate]

We had some ransomware get into our system a couple of weeks ago, and it has encrypted a large amount of our files. I am wondering, is it possible to figure out an encryption key if I know the ...
3
votes
2answers
842 views

enumeration and MS DCERPC

Enumeration, enumeration, and even more enumeration is the generic pentesting mantra, but enumeration is worthless if you can't read the results. I came across the Windows RPC service, where ...
5
votes
3answers
216 views

Is my Google session safe when my computer is logged out or locked?

I've recently uploaded all the family photos to my Google Drive account. I have a strong password and 2 step verification enabled on my Google account. My home computer is (naturally) trusted and ...
10
votes
2answers
141 views

Is Maven a plausible vector of attack?

You have a computer system, for developing and running your Top Secret™ project on, and you don't allow it direct access to the internet. However, you want to use Maven, for all the advantages it ...
1
vote
2answers
124 views

Verifying Client with Server

I'm currently designing a basic Java program that uses sockets to communicate from a server to multiple clients. I want the clients to be unmodified, however, to prevent against users trying to use ...
8
votes
2answers
6k views

How to prove my Gmail has been hacked?

I believed that someone had hacked my Gmail because they were using information contained within my emails in an attempt to try to convince me that they were psychic. I told them that I didn't believe ...
3
votes
1answer
89 views

PCI DSS 3.0: 11.3 - What happens if a low risk vulnerability prevents compliance with another requirement?

As I understand the PCI DSS 3.0/3.1 penetration testing requirements, a company is compliant with 11.3 if the penetration test does not return any high risk vulnerabilities. However, what happens if ...
7
votes
1answer
551 views

How does the OpenSSL Alternative chains certificate forgery (CVE-2015-1793) attack work?

The security advisory for the issue can be found here: https://www.openssl.org/news/secadv_20150709.txt OpenSSL Security Advisory [9 Jul 2015] Alternative chains certificate forgery (CVE-2015-...
3
votes
2answers
188 views

Share network with neighbor

My neighbor asked me if I wanted to share his network with me. Internet access is a little more expensive here than I am used to in my country. Before saying yes I wanted to know if I had risks in ...
3
votes
2answers
157 views

Is this an appropriate anti-CSRF method?

I have the following system in place on my web app and I'd like to know if it's secure. Cookie contains CSRF token. Application detects CSRF token in cookie. Application places token in a header. ...
5
votes
3answers
2k views

Is there a way to block your ISP from controlling the password of your main router?

I got internet installed at my home earlier today by Bright House Networks. When I asked the installation technician about changing the router administration password, he said that he can change it ...
1
vote
0answers
128 views

Web/search engine spider on local network?

I was setting up a test webserver on my local network earlier, and whilst sorting out the firewall I noticed the following in the log (/var/log/ufw.log - I'm using UFW on Ubuntu 14.04): Jul 9 14:17:...
1
vote
0answers
267 views

Adding a binary to the firmware of a routing device [closed]

I've been playing around with a router d-link dwr-921 and found some vulnerabilities in the web interface. I still haven't managed to get shell access and now I'm thinking about modifying the firmware ...
2
votes
3answers
561 views

Is it possible to protect against rogue mobile base stations? [closed]

I just read the answer to this question Mobile numbers capture and transmit data and it sounds surprisingly simple for calls/SMS (and data?) to be intercepted by a fake base station. From what I ...
11
votes
2answers
2k views

Custom Metasploit payload with UAC bypass

The machine I am attacking has anti-virus installed. I have managed to use Veil Framework in order to create an initial reverse shell payload that is undetected by the AV. However, UAC is enabled on ...
3
votes
1answer
105 views

Does the modulus of a TLS certificate uniquely identify the client?

I'm working on a project using a trusted-peer setup. I want a way to uniquely identify each actor in the system, ideally across certificate re-issues as well. In my understanding, the modulus of a ...
1
vote
1answer
84 views

There was a potential harmful file on my server, What damage has it done? [closed]

I received an abuse complaint for my server from hosting provider. After a thorough search I found file with name "title.php" in a WordPress installation's upload directory. I am curious to know what ...
6
votes
3answers
203 views

Is google saving clear text passwords? [closed]

On your GMail account you have the option to add other POP3 accounts to automatically fetch mail from them; Google Mail Fetcher. When enabled you have to specify your username and password, and the ...
7
votes
5answers
350 views

Can a website detect my local WIFI network I am in?

I have two computers, both of them locate at the same local WIFI network ( ie: connected to the same router). I use VPN on a computer to visit a website, and don't use VPN on another to visit the ...
8
votes
1answer
181 views

What to do with a PGP/GPG key to which I've lost the private key?

I created a private key with an Android app I'm no longer using. I had uploaded the public key to the keyservers without setting an expiry date. I later deinstalled that app, and deinstalling ...
6
votes
2answers
90 views

Issuing certificates to two departments from same ROOT CA so one does not trust the other

Scenario: We have two departments within IT; Say Department-OLD and Department-NEW. A single internal PKI environment exists and a root CA (singular) is trusted by All endpoints. Problem: ...
3
votes
0answers
62 views

XSS only works when GET request is submitted with form [duplicate]

I'm trying to create a POC for responsible disclosure, but I'm having an issue... When I use a textbox to submit my payload, it brings me to another page where the javascript executes and is present ...
4
votes
2answers
158 views

Deny attacker access to my router

I was experiencing very low connectivity on my wireless, so I checked the router logs. Here's what I saw: Jul 09 11:07:24 Per-source ACK Flood Attack Detect (ip=74.125.130.129) Packet Dropped Jul 09 ...
2
votes
1answer
129 views

Hushmails “Secure Forms” & HIPAA

I just picked up a job for integrating Hushmail's Secure Web Forms into a medical website. The forms will submit patient's (PHI) data to Hushmail's servers, encrypt the data, and then send it to their ...
2
votes
0answers
58 views

Where should I store encrypted data so as to have app-exclusive access?

I am using windows Data Protection API (DPAPI) to protect private key used in my application. I cannot hide entropy used in DPAPI call because my application needs to be open source. Where should I ...
3
votes
1answer
53 views

Why doesn't netsplit riding work on single node networks?

I've been reading up on netsplit riding (a.k.a riding the split) and according to multiple sources, it's only a risk to multi server networks. Now I understand that a netsplit occurs when a node ...
13
votes
1answer
1k views

Which parts of an HTTPS connection can be revealed? [duplicate]

Say, I use a public WiFi connection to load https://google.com in the browser, and then continue browsing on that site for a few more pages (performing searches in Google). Can anyone else (like ...
-3
votes
1answer
460 views

What type of hash is this MD4(MD4(($pass)).(strtolower($username))) [closed]

Can I decrypt this hash? Domain Cached Credentials: MD4(MD4(($pass)).(strtolower($username)))

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