1
vote
3answers
158 views

What are some good ways to prevent a malicious visitor from maxing out our customer's API maximum allowed service calls?

We run an API service. We gave our customer a package for max limit of 12000 API calls / day. He reported to us that a user has been on purposely visiting his web page 12,000 times a day in order to ...
1
vote
2answers
971 views

best practice for encrypted filesystem inside a file

This is an extension of my question on UNIX. Let's suppose I create a file, map it to /dev/loop0, and create a LUKS partition inside dd if=/dev/zero of=myfile bs=1M count=1000 losetup /dev/loop0 ...
0
votes
1answer
132 views

Securely transmit sensitive data

I am creating a java application which is dependent on a server. On startup the application will transmit sensitive information (passwords and emails) which will be sent to the server and from there ...
0
votes
3answers
461 views

How to safely mirror network traffic for audit reasons?

We have an internet connection that we need to audit: INTERNET ->> ROUTER ->> CLIENTS our idea would be to put a (enough big) HUB before the router (router, that logs in via pppoe to ...
3
votes
2answers
2k views

Why do multiple IP Addresses in my local network point to the same computer?

I'm new to linux and nmap, and I am attempting to do a scan of my local network. Using nmap I find that there are 4 hosts on my network (10.0.2.2, 10.0.2.3, 10.0.2.4, 10.0.2.15). I am using VirtualBox ...
2
votes
2answers
253 views

Website doesn’t always log me out – Privacy concern or am I overreacting?

I’ve been applying to for some jobs and use one certain careers page somewhat regularly. I’ve started to notice that I don’t always get logged out even if I do click “log out” and see a message that ...
14
votes
6answers
2k views

Defamatory post - obtaining evidence tracing perpetrator right to his laptop

A month ago, someone posted an ad with my personal details, including my home address, my phone number and my photo on an ad with very a very defamatory write up. What followed was a week of calls ...
9
votes
2answers
2k views

Is it really secure to store API keys in environment variables?

This site says it is best to keep API keys in environment variable out of the code. And here Storing Credentials Securely You should take great care to ensure your credentials are stored ...
1
vote
2answers
1k views

Is there a way to be 100% sure that your computer is clean of viruses?

If your computer has been hacked or infected, is there a way of cleaning your computer and have 100% sure that it's clean? I heard that you can safely clean your hard-drive with completely wiping ...
2
votes
3answers
542 views

Can authentication in social networks through VPN defeat the purpose of the latter?

If a person uses VPN and authenticates herself to some social network through the VPN, doesn't she lose her anonymity for as long as the VPN session is used ? By losing her anonymity, I mean that her ...
8
votes
1answer
536 views

what is differential privacy?

Currently I have heard a lot about differential privacy but I am unable to find out what exactly it is in a non-mathematicians language. Up-till now my understanding is that it add noise to the answer ...
0
votes
1answer
170 views

Unknown Website Linking to my Local Files?

I recently discovered a website that I am in no way affiliated with linking to the files of my local website stored on an external hard drive. This unknown website is actually executing the scripts, ...
1
vote
2answers
6k views

iOS, Android, and OS X SHA-2 support (in the context of SSL/TLS certificates)

As there is currently a move away from SHA-1 being used as part of TLS, we're examining moving our SSL certificates, used to protected traffic in transit to/from our webservers, to use SHA-2. ...
8
votes
4answers
13k views

Is it worth it to get paid anti-virus software?

With the rise in cybercrime, I am slightly worried about my computer security. I have been using open sourced anti-virus AVG for years and it has been doing well. Are anti-virus software like Norton ...
1
vote
3answers
454 views

is it possible to write php code in address bar and its gonna work? [closed]

Is it possible if i use in address bar this host.com?<?php unlink("/img/bg.jpg");?> or host.com?<?php rename("/bg.jpg","bg.png");?> if not then is there any way to do that?
1
vote
2answers
464 views

Does server RAM count as storage for PCI Compliance?

We are an eCommerce website. I'm working on our PCI compliance at the moment, and I'm trying, if at all possible, to argue that our organisation falls under SAQ A rather than D. We do not sensitive ...
3
votes
4answers
308 views

How do clients enroll using SRP?

From what I understand, one of the benefits or Secure Remote Password (SRP) is that is does not require reliance on certificate authorities. In a scenario where clients need the ability to register as ...
0
votes
1answer
703 views

Difference between password expiration and account expiration [closed]

If a password expires, the user can't access the account. If the account expires, the user can't access the account... So, what's the difference? Just that in the case of an expired account, I'd need ...
6
votes
2answers
1k views

Are smart watches secure?

My Pebble smartwatch, like many (most?) other smart watches, uses Bluetooth Low Energy (Bluetooth Smart, BLE, BTLE, etc) to communicate with my smart phone. There's some security in the link, ...
2
votes
1answer
963 views

How to Protect JSON Data [closed]

Hi I am using JSON on User Interface side. I want to protect that data. What are the possible ways I can protect my JSON. I have a scenario where I am having JSON Object with data on User Interface ...
1
vote
1answer
477 views

MySQL encryption without knowing key

I am currently struggling with how to correctly implement storage of encrypted fields in a MySQL db, without knowing the encryption key. The result I am trying to achieve is to encrypt certain pieces ...
0
votes
3answers
131 views

Do you need to use the same number of rounds for everyone with bcrypt?

I am going to be hashing user passwords on the client machine, and I would like the hash to be generated in 0.3 seconds. Do I need to find the number of rounds myself and make every user use this ...
0
votes
1answer
297 views

RSA vs ECDSA for VANET Security

I am doing a project on Vehicular Ad-Hoc Network Security (VANET). The proposed scheme uses electronic signature as a means to authenticating the nodes. Most of the research papers I read suggested ...
5
votes
4answers
497 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
318 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
114 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
249 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 ...
1
vote
1answer
93 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
124 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
805 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 ...
8
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
53 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
2k 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
316 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
520 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
523 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
87 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
379 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
153 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
298 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
744 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
793 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 ...
0
votes
2answers
204 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
225 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
117 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 ...

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