5
votes
4answers
510 views

Contact person by phone, when their phone might have malware

I have a problem setting where I want to contact a user by phone, and where I need to protect the integrity of the phone call as much as possible. I'm wondering about how to design the interaction in ...
4
votes
4answers
326 views

How do we know if the hard disk we just bought is “clean”?

When we buy a new hard disk drive, what steps can we take to ensure that it is virus-free? For example, there are many vendors selling hard disk drives on Amazon. When we purchase one, how do we know ...
4
votes
3answers
1k views

How is it on some removable media, when enabling/disabling password protection the changes happen immediately?

For example I have a WD Passport external hard drive. After installing WD security I can enable and disable password protection, however the settings basically get applied instantaneously. Does this ...
0
votes
2answers
116 views

Email rejected by the server [closed]

Emails from site such as Gmail and Yahoo are rejected from secureserver.net server and treated as a spam. Can you help me?
0
votes
1answer
256 views

Why not use client certificates for premaster key generation

The question is about a very specific SSL handshake scenario. I understand that some servers may request client certificates in order to authenticate connecting clients. However, as far as I can know, ...
1
vote
1answer
95 views

Base Programming for vulnerabilities

Hello, I am a beginner looking for some information. My question is the following: In order to understand certain security concepts is it essential that I understand the underlying languages? For ...
4
votes
2answers
3k views

Actually, isn't it bad to redirect http to https? [duplicate]

I have a two-part question about question #570288 over on ServerFault. Question: Is it bad to redirect http to https? Accepted answer (185 up-votes): [...] Hell no. It's very good. Part 1 ...
1
vote
1answer
125 views

Only one entry in No-SQL database needs encrypting

So I have the document format as follows: { id : plaintext, date-created : plaintext, data : binary } The data entry needs encrypting and decrypting. My idea was to have a private key, ...
0
votes
1answer
849 views

WPA/PSK Dictionaries

So i have been reading some articles on WPA/PSK encryption, And one said that the hash is calculated like this: Key = PBKDF2(passphrase, ssid, 4096, 256) Where PBKDF2 is a standardized method ...
9
votes
1answer
6k views

New to security, is php password_hash() good enough?

This is the first time I've had to handle personnel information and I want to make sure I have a good amount of security. I will be storing users' emails and passwords for their accounts on a MySQL ...
0
votes
1answer
54 views

Industry standards for threat names

One of the security appliances we own reports a so-called "Industry Name" for the threats it detects on the network. I wanted to know if there is really such a standard and where I can find ...
2
votes
1answer
3k views

Can a webpage read another page's cookies?

I was listening to Pandora as I logged in here, and the next commercial was about InfoSec. That set me wondering as to whether that was a coincidence (probably) or if they knew somehow. To make a long ...
0
votes
1answer
322 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" , ...
2
votes
2answers
559 views

Can sessions be handled securely with cookies disabled?

I've been doing some reading here about session ID handling, and have learned that it's generally a bad idea to include a session ID in the HTML source code, and/or on the query string. For example Is ...
0
votes
1answer
568 views

Zeus for iOS devices

Is there a known variant of Zeus which attacks iOS based mobile devices? I have read about versions for Android and Symbian , wondering if iOS is vulnerable to it as well.
-6
votes
2answers
90 views

Ips used by the same person?

Is it possible to find out if ips are from the same location and used by one person. We have a situation were three ips have been logged etc. We know for sure that two are from the same person this ...
8
votes
3answers
383 views

How can I allow acces to encrypted data if only 2 out of 3 users provide a secret?

I want to encrypt data, but make sure that no single user can decrypt the data. Further, it is important not to require ALL users to be present to decrypt. This will allow for some flexibility and ...
14
votes
2answers
3k views

How does Windows 8's Microsoft Account authentication work?

One of the new features to Windows 8 is the ability to log in to your PC using your credentials from a Microsoft Account. How is this implemented, and what steps are taken to prevent hijacking of ...
4
votes
2answers
3k views

How does DigitalOcean DNS verify the owner of a domain?

Say you purchase a domain on Namecheap, but want to host DNS on DigitalOcean. DigitalOcean, says to simply tell your registrar to use DO's nameservers, then set up your DNS for that domain on DO. ...
1
vote
3answers
156 views

Why does changing physical router not warn of possible man in the middle attack?

Situation I swapped out a dead router at home today. I setup the new router with the same SSID and encryption settings. The devices on my network acted like nothing had happened and are happily ...
12
votes
1answer
310 views

Securing a prediction about a future event

I want to make a prediction about a future event, but only reveal that prediction after the event occurs lest knowledge of my prediction affect the outcome. For example, suppose Alice predicts that ...
1
vote
2answers
776 views

Extracting Facebook ID or email from browser's history

While I was looking at my browser's history I noticed there has been a Facebook login from my computer, there are some Facebook related messaging and profile links in my browser history (chrome). The ...
0
votes
1answer
99 views

How strong is this encryption? [closed]

Given Dictionary containing 1000 three-letter words: dictionary=abc,def,ghi,jkl,mno,pqr... Randomly chosen words from the dictionary: 10-bits-passwords=abc,def,ghi Randomly chosen three words from ...
1
vote
2answers
900 views

On what layer should password hashing and/or encryption take place

I'm finding myself on the inexperienced end of a discussion about where password hashing takes place. My coworker drew a schema from less to more secure, where the Public Internet was the least secure,...
0
votes
2answers
228 views

DHE Verification

I'm just struggling to get my head around this. In certificate signing with static Diffie Hellman the public key and certificate information is sent to the CA who verifies the certificate ...
0
votes
1answer
233 views

HTTPS Proxy Everwhere?

I am configuring a HTTPS proxy, which I want to use for my laptop wherever I go. The idea is that since its encrypted, I should be safe from eavesdroppers, even on open wireless networks. Think of it ...
0
votes
1answer
129 views

To what extend can a DOS attack succeed even if it was detected?

While reading DOS detection and prevention http://staffweb.cms.gre.ac.uk/~lg47/publications/LoukasOke-DoSSurveyComputerJournal.pdf I've asked myself: Even if a firewall detects a DOS attack and begins ...
1
vote
0answers
427 views

Bouncy Castle C# API and NTRUEncrypt

I want to play around with NTRUEncrypt and I found this tweet that NTRUE is now part of bouncy castle. But I cannot find any proof of the existence in the source code of teh Bouncy Castle C# API, ...
0
votes
1answer
2k views

Protecting MYSQL with Fail2Ban? [closed]

I have a bunch Raspberry Pis collecting data from behind client firewalls. I want to start sending this data to MYSQL server. Because the Raspberry Pis do not have static IP addresses, I obviously ...
0
votes
1answer
365 views

A Question about Database Encryption [closed]

I've been looking around for an answer to this for some time now and I felt that this place would be a good venue to ask this. How can one improve the security in a MySQL database? The database that ...
1
vote
2answers
765 views

why are the first few characters of a DSA Private Key similar?

I noticed most DSA private keys often start with the same few characters, MIIBvAIBAAKBgQD . For example, generate a private key on Ubuntu, by running: ssh-keygen -t dsa -N '' -f /tmp/id_dsa This ...
3
votes
1answer
1k views

SCADA, ICS Specfic Testing Tools and Methodologies

I have been contracted to perform a security risk assessment that relates specifically to ICS and SCADA systems. I have performed many IT security risk assessments, however, I am new to assessing ...
1
vote
1answer
1k views

Distributed IMAP-Dictionary-Attack-Tool?

I have a client with a hacked IMAP-Account, and the attacker(s) made thousands of password-attempts, probably with a fixed set of passwords, from different IPs before they got in. After successful ...
0
votes
1answer
219 views

Hack profile identification

What does it suggest about a "hack" when people I know get emails from me, but my email password hasn't been changed to lock me out? (Not a spoofed sender - I see some in my sent folder). If my ...
1
vote
4answers
857 views

How to verify full USB drive's digital signature

There are various ways to verify the validity of a file, usually checking the MD5 checksum or OpenPGP signature. Is it possible to do the same for a full USB Drive? I'd like to be able send a USB ...
2
votes
4answers
916 views

Session id on page html source code

I want to know if it's dangerous in any way to store the current logged user session id on the page generated source code. Why I wanted to do that? I'm trying to share the user session between two ...
3
votes
1answer
6k views

Java Applet - Need Code Signing Certificate vs SSL Certificate

I'm working on a Java Applet that used to be self-signed. Now that java 7u51 is being used, I am working to get the jar for the Applet signed. I used the certificate/key used for the apache2 ssl ...
1
vote
1answer
124 views

How can I view the contents of a web page without running malicious code? [closed]

I received a strange email which has some strange URL in it. I would like to know what is "behind" the url, but without the risk of running anything malicious. How can see the contents of the URL, ...
0
votes
1answer
83 views

Why is no cloud allowed in this brief? [closed]

I couldn't find a better place on StackExchange for this question, but please point me in the right direction if there is a better place for it. My company is bidding for some work, and in the ...
1
vote
2answers
399 views

Use of pwgen with sha1 to create recreatable passwords

I'm looking at using Theodore T'so's pwgen (on linux/ubuntu) with its sha1 (-H) feature to generate passwords that I should be able to recreate later using the same file and seed. I briefly looked ...
1
vote
0answers
83 views

RHS Blocklist, Other blocklists and impacts of RHS blocking on similar domains

I am not very familiar with Blocklists so had a few queries around it. I have a sub-domain example.com which is used to send mass marketing emails i.e. emails are sent from no-reply@example.com. A ...
16
votes
4answers
1k views

Does two-factor authentication reduce the need for a long password?

I've recently enabled 2-factor auth on a number of web apps, mostly using Google Authenticator. Does this mean that the importance of a strong password on each site is reduced? I would prefer to use ...
5
votes
1answer
4k views

OAuth2 with client credentials v/s other auth mechanisms

For a REST API against which clients would be writing non-browser based, non-interactive applications, if OAuth2 is the authentication mechanism to be followed, then we would use the client ...
1
vote
1answer
298 views

What are the implications of storing sensitive data in bookmarklets?

While discussing alternatives for asking the browser to remember your password, one guy suggested using a bookmarklet to store users' credentials. The original answer is in portuguese, but I'll ...
0
votes
2answers
77 views

Is there a point in restoring from backups if you don't know where the virus came from?

It's been happening more and more frequently I get viruses with no idea where they come from. I have recent backups, but I don't know if there's a point in restoring since I would just install the ...
3
votes
1answer
554 views

My home PC was hacked and accessed my bank! Advice on next steps? [duplicate]

I recently setup a new Win8.1 PC while still working on my main development PC so it did not have all of the security tools that I usually install, e.g. malwarebytes, adaware, etc. Since it takes me a ...
3
votes
4answers
7k views

Does a TLS interception proxy present the user's browser with the end server's certificate?

I know that TLS (commonly but mistakenly called SSL) interception works by establishing two encrypted tunnels between a client and server, with the interception device (proxy) terminating both tunnels ...
0
votes
1answer
127 views

Encryption and Deniability

I have the following problem: Alice wants to send Bob a message such that Bob knows it is from Alice but at the same time he cannot prove that Alice send him this message. The solution I came up with,...
1
vote
1answer
37 views

service providers and web activity

It is good to know that ISP have legal boundaries for retaining a client's internet activity. Is it possible that individuals can hack the ISP and then have access to someone's web history activity?
4
votes
1answer
2k views

CakePHP Set-Cookie Response Header

I am familiar with the cakePHP cookie and session settings but I am unsure as to why (when analyzing through the Burp Proxy Suite I am finding 2 separate Set-Cookie responses: Set-Cookie: DropZone=...

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