Security in terms of "computer security", such as protection of information, protection from theft or data destruction.

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Probability of external physical factors corrupting computer data and calculations?

In the discussion of unreasonably bad sorts, there was an answer that claims alpha particles flipping memory bits can be used as a sorting algorithm. Which makes me wonder: How probable do external ...
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3answers
434 views

Does an MD5 match between a torrent file and an original file from a provider mean the torrent file is safe?

I wanted to download a certain distro of Linux. However it is only using bittorent for download. I'm not to keen on bittorent. If I do use it, however, if the MD5 I download matches the MD5 of the ...
3
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2answers
150 views

What is the most secure, efficient and cheap way to backup files? [closed]

I 've been using computers for 20 years and I have gone through several styles of backing up my files. In the past I used to burn files on CDs and DVDs, which soon turned into a huge mass. I couldn't ...
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2answers
30 views

Is there a way to revoke a GPG encryption key?

OK, so as I understand it, the key revocation mechanism is used to revoke a signing key in your web of trust: so you say to other GPG users that your previously-used identity has been compromised, and ...
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1answer
49 views

In Thunderbird, how to prevent users from creating new mail accounts?

I have just setup our company e-mail with a popular online e-mail provider. E-mails will be retrieved from the online server via Thunderbird installed on Windows 7 PC's. I wish to exercise ...
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0answers
17 views

How to manage SSH keys securely in Windows?

I currently have an SSH key I use to access both Bitbucket and my home server from my Windows laptop. The most convenient way I found to deal with the use of the private key was to just have pageant ...
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1answer
28 views

what are the techniques to extract files safely? [closed]

Yesterday I was making some experiments on Slitaz. It uses multiple initrd.img's to store files/changes. I wanted to extract one of its initrd.gz images (which is a cpio archive) to a folder, ...
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2answers
39 views

Security risks using SUDO in TERMINAL on MAC

I'm very new to using Terminal and anything like that and stupidly followed an article that uses Terminal with the SUDO command. The sudo command basically loaded a file which updated my ...
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1answer
97 views

Has my password been compromised?

I just tried to register an account at www.mysonicwall.com (irrelavent) and got this error message: This password is publicly available in hacking/security forums and can be easily compromised. ...
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1answer
47 views

Wifi Snooping over phone [closed]

I connect to the wifi acccess-point at work, but recently I suspect that data on my phone is being snooped-out from my phone connected to my office's Wifi network. [Phone Model: Sony Ericsson Xperia ...
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1answer
43 views

Using VLANs/subnetting to separate management from services?

Background: I recently purchased a server and a managed switch for my home in the hopes of getting more experience and some fun toys to play with. The devices and appliances I either have or plan to ...
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2answers
42 views

Providing secure access of internal network to outsiders of internal network [closed]

How can we give secure access of our internal network to some one who is not in our internal network. What can be most secure way of doing that? We have created a java based webportal which is ...
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1answer
30 views

Is auto-logon on laptop with encrypted hard drive secure? [closed]

I have the complete hdd of my laptop encrypted (with the Windows built-in Bitlocker) and thus have to login two times upon booting (Bitlocker and user account). Since I'm the only person using the ...
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0answers
17 views

How can sensitive data written in a custom Outlook Form be protected?

We have an outlook form that is installed on some users machines, for use with their Exchange email account. All the emails sent using that form go to an internal functional/shared mailbox that is ...
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1answer
110 views

Why did Windows 8.1 damage the security permissions on a drive from another Windows installation

I have a problem with Windows 8.1 and doing a "quick" backup of the files and folders on another installations HDD Scenario: Computer A: My computer = Windows 8.1 fully patched Computer B: ...
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1answer
38 views

How do I import a raw AES key to a JCEKS keystore?

I have some test data that is encrypted with 256 bit AES. The customer supplied the key as a 256 bit file. The application uses a java key store for decryption keys. The keytool options I've found ...
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1answer
24 views

How to lock Access 2010 record after it has been saved?

How can I create a macro to permanently lock a record once it has been saved? My problem: Every Access 2010 lock command that makes the saved records un-editable, also locks the 'New Record' form ...
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0answers
29 views

Can Juniper's Network Connect SSL VPN software access information on a Windows client PC?

Looking for some help with the questions below. 1) Can the Juniper Network Connect VPN client be used to gather information on the client PC? 2) Does the Juniper Network Connect VPN client support ...
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2answers
86 views

Is it insecure to use a swap file that multiple systems can read?

I'm setting up a dual-boot system with Ubuntu Linux and Windows 7. Both systems are installed on an SSD, each given around 50GB. However, there is an additional internal HDD with a single ext4 ...
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3answers
30 views

Make sure command entered is Read Only

I am creating an API that takes in any command (in bash) and executes it at the root. I want to ensure this command is RO and does not write anything. Any ideas of how to go about this? Maybe it can ...
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0answers
14 views

How to prevent insecure content being loaded in chrome

I know how to allow insecure content to be loaded in Chrome, but if you have already done this how do you subsequently block insecure content from being loaded? Note the shield has disappeared and I ...
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1answer
31 views

Is the guideline: don't open email attachments or execute downloads or run plug-ins (Flash, Java) from untrusted sites enough to avert infection? [closed]

I'd like to know if the following is enough to avert malware as I feel that the press and other advisory resources aren't always precisely clear on all the methods as to how PCs get infected. To my ...
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56 views

Xubuntu (Ubuntu 14.04) security updates don't pop up automatically anymore

Previously, for years whenever a security update was available it would pop up instantly. Even when they were pushed in the middle of the night and I was still on the computer. For some reason since I ...
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1answer
52 views

How to make an encrypted Gmail backup on my VPS? [closed]

I'm using offlineimap to backup my Gmail on my VPS, in case Gmail might go down, get hacked or anything else might happen. I want to be able to do the following: Have a recent backup of all my Gmail ...
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1answer
71 views

How to find the owner of a wifi network [closed]

I live in a neighborhood where the houses are close together - when I click on wifi, I get a long list of available networks. One of those available networks has a name that startled me, something ...
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1answer
33 views

iptables: Is it dangerous to filter by source port?

I would like to run a stateless firewall setup and I currently have the following rules: #Do not track any packet *raw :PREROUTING ACCEPT [0:0] -A PREROUTING -j NOTRACK COMMIT #Actual firewall rules ...
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2answers
36 views

Why is the advice to change passwords following a data breach? [closed]

We frequently see news stories about high profile security breaches such as ebay and another at apple. As a developer I know the importance of salting and hashing passwords. Assuming these high ...
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2answers
258 views

Connection to Google, Yahoo, Bing, Ask, etc. compromised via all devices on my home network - How?

I'm a very computer savvy guy (although not very networking savvy), and I may still be wrong about this, but I think my home network may be compromised somehow. I'd like to know if it's possible for ...
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1answer
44 views

SSH tunnel through a workstation to a remote server

I have a situation that similar to what is posted here but not quite the same. I have access to a remote machine A that I connect to from a machine B using a private key with a passphrase. I'd like ...
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1answer
42 views

Prevent program from getting stolen with Windows permissions

I'll be sharing a dedicated Windows 2008 R2 server with another person. I will have admin rights and admin an account. The other person will only have a "normal" account and no admin rights. I have a ...
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1answer
18 views

Can you recommend a way to secure a server with audit trails? [closed]

The company I work for has grown from a small business into a business with a multi-million pound turnover. We have a number of e-commerce sites all built with our bespoke CMS/CRM that has been ...
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1answer
62 views

How do I ssh-add a protected key to ssh-agent for my Jenkins CI instances?

I manage a Jenkins CI server running on Ubuntu 14.04 with a few requirements: Jobs make use of public/private key authentication for security, so an identity must have been added to ssh-agent prior ...
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3answers
70 views

Can a virus or malware be bundled with a non executable download? [duplicate]

Can a virus or malware be bundled with a non executable download? For example, when choosing 'save link as' on an .mp3 or a .pdf file, is it possible for the download to include more than just the ...
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1answer
235 views

Executing an ATA Secure Erase command to SSDs on OS X

Is there a way to securely erase an SSD (I'm working with Crucial M500) from OS X? I'm not interested in zeroing the drive. What I need is the ATA Secure Erase which basically erases all data on the ...
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2answers
142 views

Can someone steal my WiFi password? [closed]

I was wondering today about ways someone could steal my password and I came up with a few questions. I think it's the best to let them be answered by SuperUsers :) My questions: Is someone emitting ...
1
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1answer
109 views

Is it possible to disable TLS1.0 in Chrome?

I use LastPass. In Chrome, I cannot access the website www.lastpass.com. In IE and Firefox, I can access it only if I disable TLS1.0 in those browsers. When heartbleed came out, all of a sudden I ...
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1answer
76 views

Is Windows 7 Administrator user meant to be activated?

I just started to work on a Windows 7 Environment for one of our products which is, until now, still shipped with Windows XP. Now my question: The customer only has access to a very restricted ...
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26 views

How should I configure my Tor-dedicated firewall for optimum security?

I'm setting up a Tor-based isolating proxy using the 'Anonymizing Middlebox' iptables rules specified here: https://trac.torproject.org/projects/tor/wiki/doc/TransparentProxy i.e. iptables -t nat -A ...
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1answer
56 views

How can someone get my CLSID?

I just got a call from a guy telling me he was Microsoft IT support. He told me to go to a suspicious website and download an executable there. Totally did not give him the satisfaction and trolled ...
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1answer
7k views

Identifying program attempting to install certificate on windows

I'm trying to help a friend using Windows (which I'm not an expert on by any means) who's experiencing malware-like behavior: a dialog box is repeatedly popping up reading: You are about to ...
21
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2answers
2k views

I'm using Chrome and Chrome Sync; does Google have access to my passwords?

I've been using Chrome (and Chrome Sync) for many years now. Does that mean Google, the owner of Chrome, knows all my passwords? I ask because I realized that Google owns Chrome, and also, it is a ...
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0answers
15 views

How do I limit X access for potentially malicious GUI application?

Application directly accessing Xorg can not just draw some good behaving windows, but also capture input, mask windows something else (e.g. password input), lock X server and so on. How can I give an ...
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1answer
86 views

Idiot-proof antivirus/security for mac machines [closed]

Apologies if this is a duplicate, but I can't find anything similar. I've got a small office with 8ish mac machines, laptops and the desktops of varying age, running the latest appropriate Mac OS. ...
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1answer
28 views

How to take a clean backup from a compromised laptop?

My laptop has been infected by malware. How should I take a clean backup from my files on the other drives than C: (OS) to prepare for a clean reinstall?
2
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1answer
70 views

Use of ephemeral port for server

In general ephemeral ports are used by clients when establishing connection with the server. For example: Server listens on port 80 A client (browser, FTP client, bittorent client) send a request ...
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1answer
33 views

Is it a good idea to store in my email confirmation emails for internet accounts? [closed]

Currently all the emails I get when signing up for internet accounts I keep in a folder called "Accounts". Anytime I forget a username, or whether or not I have an account, I just search my emails. ...
2
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1answer
27 views

Windows - service account default certificate store

I am writing a web app that connects to external web services. The external web services serve an intermediate certificate signed by Thawte SGC CA - G2. When I setup IIS to run the web app using ...
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1answer
99 views

How can I take precautionary measures from joining or being joined by a bogus SSID? [closed]

I have noticed this same SSID, FBI SURVEILLANCE in three locations in the greater Southern California area (Garden Grove, Santa Ana, and San Juan Capistrano, California, U.S.A.). Is this one heck of ...
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1answer
81 views

Change User-Agent as a security measurement

Imagine the following situation. I'm a Mac user, if I open a web site with some kind of malware(Platform specific). This site/malware will use my user agent to detect what system I am using. So, if I ...
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1answer
37 views

Should I add keystore files to version control?

Is there any reason to not store keystore files in version control? Is there a security risk to doing so?