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

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21
votes
4answers
29k views

How does a hacker in a public WIFI actually view your computer?

I've read that they can see what sites your viewing or even access your computer if you're connected on the same WIFI connection but how exactly?
25
votes
17answers
5k views

How can I physically destroy data from a failed HDD?

I have a broken HDD that contains sensitive data. Since no software can access the disk, I can't wipe it using any of the tools generally suggested. Breaking the disk physically into very small ...
14
votes
6answers
9k views

Wipe RAM on shut down to prevent Cold Boot Attack

My system is encrypted using Full Disk Encryption, i.e. everything except /boot is encrypted using dmcrypt/luks. I am concerned about Cold Boot Attacks, where researchers demonstrated, that content ...
11
votes
4answers
3k views

Recommended offline on-demand virus scanners

I have never run full anti-virus on my Windows XP systems. Instead I use various anti-malware tools to manually perform scans every few weeks. This approach, combined with Windows updates and ...
7
votes
3answers
2k views

Remote into Linux workstation behind a firewall

Let's say I have a Linux workstation at work, behind a firewall. So even though I may have a remote access server set up on it (such as the most excellent NoMachine NX Server), I can't access it from ...
13
votes
5answers
4k views

Steganography software

Do you know some good (better if FOSS and cross-platform) steganography software that runs on GNU/Linux? The features I'm searching are: steganography software (better if FOSS and cross-platform) ...
9
votes
3answers
55k 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. ...
32
votes
4answers
4k views

Can I permanently prevent Java security updates from installing Yahoo Toolbar?

Each time I get a Java security update, I have to remember to untick the box to install the yahoo toolbar browser plugin that they've decided, for some mad reason, is an important security feature of ...
3
votes
4answers
2k views

Internet monitor/filter solution for home network

I am looking for a simple and cheap way to monitor/filter internet usage on my home network. The solution should not be machine or OS specific, and it needs to be somewhat difficult to circumvent. ...
19
votes
2answers
12k views

Is zip's encryption really bad? [closed]

The standard advice for many years regarding compression and encryption has been that the encryption strength of zip is bad. Is this really the case in this day and age? I read this article about ...
15
votes
2answers
15k views

Are the insides of LCD monitors dangerous?

I have an LCD monitor that is cracked. So far nothing leaks out but if something starts leaking should I be concerned? I have searched and read everything from: It is safe to be around and ...
12
votes
8answers
2k 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 ...
8
votes
7answers
2k views

Do I really need a firewall?

I've been using the Nod32 security suite for some time now, and out of all the others that I've tried, it's great (low memory footprint, fast, fairly cheap). However, I've been installing a lot of ...
7
votes
1answer
3k views

How to report a malicious site to Google, Microsoft, Mozilla, etc. so that they will warn users

I completed a project a year ago. Now a few modification were needed. While trying to test the site, there was an index.html file with a malicious script which had an iframe to another site's jar ...
6
votes
4answers
8k views

Take a webcam photo on login using Windows 7

How do I set up my webcam to capture an image on the sly each time my account (or any account) logs on? Is there some specific software that will do this? I have a Logitech QuickCam Fusion cam and ...
9
votes
14answers
48k views

How to disable Utility Manager (Windows Key + U)

How do I disable the Windows + U hotkey in Windows XP? Alternatively, how do I stop the utility manager from being active? The two are related. The utilty manager is currently providing a potential ...
6
votes
2answers
3k views

How to “flush tor circuit”

On Windows I have used XBBrowser, which provides a custom version of Firefox suited to using Tor. XBBrowser provides a button, flush tor circuit, which will setup an entirely new connection and exit ...
3
votes
1answer
14k views

Lack of permission to open user folder

I've experienced some error with my windows vista installation for reasons unknown (just a DELL from late 2008). Whenever I try to start up, the computer immediately reboots without letting me in. I ...
7
votes
4answers
26k views

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 ...
4
votes
8answers
6k views

Unintentional mouse movements, am I paranoid?

I have noticed for a few months that my mouse will randomly jerk across the screen. I'm super paranoid about security. Has anyone else experienced this, and found out what causes it? It happens to me ...
4
votes
2answers
4k views

How can I secure an Ethernet-over-power network?

I just bought myself an Ethernet-over-power adapter, and plugged it in. It seems to be working great, but now I'm concerned that my neighbours may be able to access my network. I live in a rowhome ...
1
vote
1answer
1k views

Is Microsoft Security Essentials a solid security suite [duplicate]

Possible Duplicate: Would Microsoft Security Essentials be adequate protection? With the release of Microsoft's new Free security suite; Microsoft Security Essentials, the question has to be ...
0
votes
3answers
314 views

Duplicate MAC but different IP on home router

Would it be possible to have duplicate MAC addresses but different IPs on a home router? My questions are listed below. I don't have computers with the same MAC. The second connection displays no ...
0
votes
2answers
4k views

How to make USB drive or pen drive write protected? [duplicate]

Possible Duplicate: how to write protect a USB key ? I have a pen drive which I used to carry some files from my laptop to other public computers, these public computers are virus infected. ...
0
votes
4answers
1k views

How do you block specific urls and not entire domain

I want block a URL on specific computer, in this case www.google.com/reader but i not want to block the entire domain of google. It is for my work machine as I don't seem to have enough self control ...
0
votes
1answer
2k views

Password Protecting Partitions on an External Hard Drive

I'm looking forward to the suggestions I get back on this one. Here's the rundown: I'd like to have an external hard drive to use as a backup for my household. Ideally I'd like to be able to take ...
138
votes
9answers
21k views

Is it really possible for most enthusiasts to crack people's Wi-Fi networks?

Can most enthusiastic users (even if they are not professionals) use well-known techniques to break through the average home router's security? Some basic security options are: strong network ...
81
votes
8answers
21k views

My colleague often shuts down my machine through the LAN - how do I prevent it?

This might sound weird. My colleague and I were working on a Windows machine. He frequently shuts it down through the LAN. He usually follows these steps: Access command prompt, enter shutdown -i. ...
54
votes
6answers
3k views

Is there a point in installing antivirus on Ubuntu?

I have recently started using Ubuntu. I am wondering about the point of installing antivirus programs on Ubuntu. On SuperUser, I found the opinion that it only detects "windows viruses" and removes ...
49
votes
5answers
3k views

What are the potential security issues when I keep using Windows XP? [closed]

Microsoft stopped updating Windows XP and the media warns us of security leaks. I actually just read that continuing to use Windows XP is "extremely" dangerous. Why exactly is this such a danger? I ...
10
votes
3answers
11k 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).
26
votes
7answers
2k views

How can I protect myself while using public wifi hotspots?

I frequently need to access secure resources (gmail, banking, remote desktop, etc) while on public wifi hotspots. What can I do to ensure that nobody can sniff my passwords or my other browsing ...
23
votes
16answers
16k views

How can clients easily and securely send me passwords?

I often need to get passwords from clients for FTP, SSH, MySQL, Authorize.net, etc. What's an easy way for them to send me passwords securely? Maybe even without them needing a login/password? ...
16
votes
6answers
4k views

How to set up simple VPN for secure Internet connections over unencrypted Wi-Fi?

I recently moved into an apartment where the complex provides free unencrypted Wi-Fi. The speed is good for my purposes, but I'm not 100% comfortable with all my traffic being sent in the clear, given ...
22
votes
7answers
11k views

Linux keylogger without root or sudo! Is it real?

Somebody on Youtube claims to have a keylogger on Ubuntu that was neither executed nor installed as root. The link below shows a demo of it working. http://www.youtube.com/watch?v=Y1fZAZTwyPQ ...
19
votes
4answers
31k views

Finding out which app is using the webcam

Yesterday I was working on my laptop. Suddenly I noticed that the indicator light of the webcam was on, despite the fact that I wasn't making a video call or using the webcam in any other way at the ...
16
votes
2answers
28k views

How to block all traffic but one IP in Windows Firewall?

I'm trying to use Windows 7 firewall to block all outgoing and incoming traffic, from all IP's and for all protocals, except for UDP to and from one particular IP address. The reason why is because ...
43
votes
1answer
106k views

What is 1e100.net and why do I have TCP ports open to it?

I see my PC has TCP connections open to 1e100.net. Looking at the content this seems to be a Chinese site and I immediately feared the worst re viruses/malware. Then I checked the whois record and ...
36
votes
3answers
12k views

Which of the Windows updates are really necessary?

I downloaded a lot of Windows updates in the automatic mode. Are they all necessary? Can I remove some of them? How do we know which ones are necessary?
31
votes
6answers
28k views

scp to remote server with sudo

I have a file on server A (which is behind a NAT so not directly addressable). The file needs to be copied to server B in a directory restricted to root. I have an account on server B with sudo ...
14
votes
5answers
12k views

How to securely delete files stored on a SSD?

From a (very long, but definitely worth to read) article on SSDs: When you delete a file in your OS, there is no reaction from either a hard drive or SSD. It isn’t until you overwrite the sector ...
22
votes
3answers
1k views

Subverting the execute flag on Linux systems. Why is this possible?

Whilst reading this, I found the following exploit: % cp /usr/bin/id ~ % chmod -x ~/id % ls -al ~/id -rw-r--r-- 1 edd edd 22020 2012-08-01 15:06 /home/edd/id % ~/id zsh: permission denied: ...
9
votes
4answers
4k views

How to hide Browser Plugin Details in firefox for more privacy?

I'm trying to trick the results in this page to have more privacy/anonymity: https://panopticlick.eff.org/index.php?action=log&js=yes So far the best I could do is change the user agent, with the ...
8
votes
2answers
4k views

How does the “Steam” platform work? Is it DRM? Can I trust “Steam”-powered software? [closed]

UPDATE: This question lives on at gaming.stackexchange.com. So – I just bought the new game Supreme Commander 2. This question is not about the game, but about the online software ...
4
votes
18answers
885 views

Is free security software as good as paid security software? [closed]

I mostly use free security solutions to protect my home PC, but I wonder if I would get better protection from a paid solution. I prefer the free software, since I can have multiple applications ...
19
votes
3answers
3k views

Is it possible to store arbitrary data in an image file?

Is it possible to store arbitrary data such as documents or a program in the form of an image file, such as a PNG image? My concern is that someone could encode data for use by malware into an image ...
13
votes
4answers
22k views

Malicious “confirm navigation” dialogs?

Some sites, like StackExchange, pop up an "Are you sure you want to leave this page?" dialog when you try to leave under certain conditions, such as if you have a post you haven't finished editing. ...
11
votes
10answers
833 views

What are the possible ways to prevent laptop theft?

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 ...
10
votes
7answers
284 views

How to browse safely?

Just curious. What are the best practices and tools you use for safe Internet browsing? How to stay away from spywares, adwares etc? Update: For my work, I use Internet Explorer on Windows and ...
10
votes
7answers
1k views

Browser for paranoid people?

Is there a web browser out there that is more suited for paranoid people? Why would you choose it/ What feature would your ideal paranoia browser have? For instance i would want one which Sends NO ...