The protection of computer systems and information from threats such as theft or data destruction.

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What software should I use to encrypt my hard drive? [closed]

I am currently running Windows 7 RC x64 on my home system, and am interested in encrypting my hard drive. I've heard good things about TrueCrypt, but am curious what other folks might suggest. I ...
14
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1answer
6k views

How does S/MIME differ from PGP/GPG, for the purpose of signing and/or encrypting email?

In addition to the titular question, are the two technologies compatible? If so, under what circumstances? What are the relative benefits of the two technologies?
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4answers
2k views

Are On-Screen Keyboards Really More Secure?

A quick question: I use on-screen keyboard when entering my bank passwords, credit card numbers, etc., in an effort to guard against malware. Is this a good idea or am I wasting my time? Some internet ...
14
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1answer
221 views

Security concerns of displaying ssh private key

I've made a huge mistake, or at least I think I did: I've "catted" my private SSH key cat ~/.ssh/id_rsa I'm now afraid that I've created a security hole, allowing other users to see my private key ...
14
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5answers
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How do I detect keystroke loggers in a reliable way?

I've always had a problem typing my passwords in on computers I don't trust (think non-technical friends computers) and although I can usually avoid doing it, there are times when I still need to use ...
14
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4answers
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Encrypted WiFi with no password?

Is there any standard that allows a WiFi connection to be encrypted, but not require a password? i know that (old, weak) WEP, and newer WPA/WPA2 require a password (i.e. shared secret). Meanwhile my ...
14
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1answer
8k views

How secure is Apple's Bluetooth keyboard?

Can anybody post any documentation on how Mac OS X and Apple's Bluetooth keyboard pair up with each other? I have seen the articles Apple keyboard pairing over Bluetooth and Which wireless keyboard ...
14
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1answer
5k views

Where is the serial number of the DVD/CD writer stored on the CD?

I was reading the Wikileaks FAQ (archived here), it says: Many CD and DVD writers will include the serial number of the DVD or CD writer onto the CD/DVDs they write. If the post is ...
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5answers
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Why can't we use/set function keys as password keys?

In any operating system the passwords with Fn were not allowed. For instance, I can't keep Fn + some character as password. What's the reason behind it? Any technical aspect which prevents the ...
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8answers
3k views

Do computer system units actually go up in flames?

There's a strong belief amoung non-technical people that home computers should not ever be left on unattended - since they are electrical devices and can go up in flames and set the room on fire. Now ...
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4answers
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How can I know if someone has logged into my account in Windows 7?

In Windows 7, is there a way to know if somebody has logged into my account when I was absent? Specifically, is it possible to know if a person with administrator privileges somehow entered my ...
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5answers
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Is it possible to encrypt home folder on windows 7?

Ubuntu and MaxOS has an ability to encrypt home folder in case laptop is stolen. Is it possible to do same thing on Windows 7? I need to encrypt home folder so it will be encrypted and decrypted ...
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3answers
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Change EUID of running process

On Linux, how can I change EUID of running process from command line (provided I have root access)?
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4answers
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Lock Mac after N mins of inactivity?

Is there a mac app that can lock the screen after N minutes of inactivity? Preferably N mins after the screensaver has kicked-in. Locking when the screensaver comes on is annoying - I want my ...
13
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2answers
58k views

Lock your computer after 5 minutes of inactivity

I know you can automatically Sleep and Hibernate your computer with a timer. But these affect running programs and stop downloads ... so I was wondering if there is a way to automatically Lock your ...
13
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4answers
30k views

How do I configure my Linksys routers to resist the WPS brute-force vulnerability?

US-CERT recently released Vulnerability Note VU#723755. http://www.kb.cert.org/vuls/id/723755 In short, this describes how modern wireless routers can have their PSKs discovered within just a matter ...
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2answers
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How, if at all, do SSH keys differ from asymmetric keys used for other purposes?

How, if at all, do SSH keys differ from asymmetric keys used for other purposes, e.g. email signing? I'm prompted to ask this, in part, because on OS X, there are apps available to manage SSH keys (...
13
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1answer
2k views

Unauthorised Bluetooth device keeps connecting to Mac

Recently I started experiencing frequent random lags with a Bluetooth mouse I have connected to my iMac: the tracking speed would suddenly drop for a few seconds before returning back to normal. One ...
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4answers
6k views

How to disable CSP in Firefox for just bookmarklets?

Today I have noticed that I am unable to run bookmarklets on https://github.com/ due to Content Security Policy (CSP) restrictions. Is there a way to disable CSP in Firefox for just bookmarklets, and ...
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5answers
3k views

Stopping people from ssh(ing) into my Ubuntu machine

I want to be able to stop people from been able to SSH onto my machine but still need to SSH out, is this possible?
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7answers
9k views

Why is MAC-based authentication insecure?

Most wireless routers can use MAC-based authentication as part of their overall security scheme. It seems like a good idea, but I've heard that it is very ineffective, because it's easy to spoof MAC ...
12
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9answers
27k views

How do I skip the “known_host” question the first time I connect to a machine via SSH with public/private keys? [duplicate]

How do I skip the "known_host" question the first time I connect to a machine via SSH with public/private keys?
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4answers
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Linux Group Permissions not being enforced correctly.

I am running Ubuntu 10.04 server and am having some very counter-intuitive experiences with users/groups. For example: sudo touch test_file # create empty file sudo groupadd test ...
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6answers
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How do I efficiently generate and validate file checksums?

I'd like to be able to capture and validate checksums for large-scale collections of files, typically nested within a complex directory hierarchy. Does every single file need a checksum? Are there ...
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4answers
14k views

Will microwaving a flash drive destroy the data on it?

After reading the answers on Permanently delete files from a flash drive, where the top rated answer was simply to pulverize it with a hammer, I wondered whether a microwave could be used to the same ...
12
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3answers
18k views

Simple built-in way to encrypt and decrypt a file on a Mac via command-line?

Are there any built in command-line tools that I can encrypt and decrypt a text file (and provide it some sort of password).
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3answers
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Windows Firewall: Logging/Notifying on outgoing request attempts

I'm trying to configure Windows firewall with Advanced Security to log and tell me when programs are trying to make outbound requests. I previously tried installing ZoneAlarm, which worked wonders for ...
12
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3answers
350 views

How can you tell if a Windows machine is part of a Botnet?

Is there a "best" way to detect if a windows (assume XP) machine is part of a botnet?
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4answers
29k views

Which ports to open for Microsoft SQL Server?

Having searched the internet a few times on the best way to open up SQL Server connectivity through windows firewall i've yet to find a best way of doing it. Does anyone have a guaranteed way of ...
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6answers
3k views

How can I render an SSD permanently inoperable with no chance of data recovery?

On platter drives, when it is time to dispose of them, a degaussing takes care of the data and in most cases erases the factory pre-recorded servo tracks rendering the drive useless. What does one do ...
12
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2answers
11k views

How to find out when a disc (DVD) has been written/burned?

Is there a way/tool to determine the date and time when a disc has been written/burned with high certainty? This is about data forensics and should be a solid proof. I already tried IsoBuster, but it ...
12
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3answers
13k views

Are saved Remote Desktop credentials secure on the local machine?

Are saved Remote Desktop credentials secure (loosely speaking) on the local machine? They aren't stored as clear text anywhere at least, are they? Edit: I understand the inherent risks of saving ...
12
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2answers
3k views

How can I detect unauthorized access on my 802.11 g/n network?

I am using a wireless network and I want to make sure that no unauthorized users are connecting through my access point. I am using the standard encryption the device supports. I know it is a ...
12
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5answers
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Multiple instances of conhost.exe

My desktop has two instances of conhost.exe running in the background at all times. Some googling brought up a few articles, like this one, but they don't explain why I have multiple instances of ...
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1answer
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KeePass justification [closed]

I personally have about 20 accounts (my personal user id on lots of machines). For shared "system" accounts, there are about 45 per environment; development, test, and production. I have access to 2 ...
12
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2answers
64k views

How can I use Event Viewer to confirm login times filtered by User?

I'm required to log my start and finish times at work. Occasionally I forget to do this and had a bright idea that checking the Security events log would allow me to retrospectively ascertain my times....
11
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3answers
107k views

Is the wifi password stored somewhere in windows-7? [duplicate]

One of my friend connected me to the wifi in our area . Now my computer automatically connects to that wifi. I don't need to enter the password. I wanted to browse internet using my android phone. ...
11
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5answers
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Can a virus on a flash drive run itself without autorun?

Someone told me that it's possible for a virus to run itself from Flash memories even if autorun.inf is not present or this feature is disabled using gpedit.msc. He said a virus can run itself as ...
11
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10answers
735 views

How is software hacked and patched?

It is really strange to see, that almost every famous and good software is cracked and patched. Adobe software, windows, IDM and many others... Is it really that easy? What are the techniques that ...
11
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10answers
927 views

What are the possible ways to prevent laptop theft? [closed]

How can I prevent laptop theft? What are the possible ways to secure the laptop itself and any data on the laptop? I have seen anti-theft cables in malls. Can I use these in my home? Will laptop ...
11
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4answers
359 views

Got shocked by a native dell laptop charger outputting 19.5 V 6.5 A DC. It was REALLY uncomfortable, but was that dangerous?

Okay. My laptop was running out of battery. I grabbed my charger (outputting 19.5 V 6.5 A DC) which was plugged into the wall, and as I touched the end of the charger I got some electric shock going ...
11
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4answers
4k views

What are possible security issues with an SSH daemon?

I'd like to be able to SSH to my Ubuntu 10.04 office PC from the outside. I am thus thinking to start up an SSH daemon on the PC. What are the security issues, possible glitches, specific ...
11
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2answers
757 views

Whats the link between security and processors

So I have been on the web for a while today and came across the intel xeon processors. In the feature list, it mentions security. I remember in many other places, I've seen security somehow linked ...
11
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4answers
2k views

How to encrypt an USB stick?

When storing personal data on a USB stick, data needs to be encrypted to ensure privacy. Regrettably, this is far from easy to do without introducing a lot of overhead; ideally, the whole encryption ...
11
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8answers
29k views

Firefox: This connection is untrusted + Behind corporate firewall

I've seen some similar issues strewn throughout Google's results about this, but none seem to be corporate-specific. I continually get the 'This connection is untrusted' screen every time I attempt ...
11
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4answers
5k views

Is it safe to store 1Password data file on DropBox?

I would like to know if it is safe to store the 1Password data file on DropBox? It can be safely assumed that there are a LOT of people already doing it without any negative security side effects, ...
11
votes
6answers
3k views

Is moving an “all-in-one” PC when turned on/off dangerous?

I have an "all-in-one" computer. I know that moving a computer when it is switched on is harmful to the hardware components. What I would like to know is if the same applies to "all-in-one" computers ...
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4answers
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Is Steam for Mac effectively running as superuser?

When you download the client it does not weigh too much, and seems to do very little. Inside the app bundle there is a script that—upon inspecting the environment and deciding you're not running ...
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2answers
5k views

Difference between Malicious Software Removal Tool, WinDefender, Security Essentials?

What is the difference between these three products? Malicious Software Removal Tool Windows Defender Microsoft Security Essentials
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4answers
5k views

WebCam as a security camera

I am looking to mount a webcam to my laptop (which sits at home all day) to act as a security camera. I'd like to it to write the video to an external hard drive, which I can then review later. It ...