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

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28
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6answers
7k views

How to put fear of God (law) into Wi-Fi hacking neighbors [closed]

I live in an apartment and some new guys have apparently moved into one of the apartments. They have been shamelessly hacking into my WiFi. Mine was initially a WEP encrypted network and out of ...
45
votes
6answers
26k views

What is better for GPG keys - RSA or DSA?

ssh-keygen defaults to creating RSA keys, but gpg --gen-key prefers DSA/ElGamal. Which one - RSA or DSA - is better for GPG?
22
votes
4answers
31k 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?
51
votes
5answers
2k views

How do anti-viruses work?

So I was thinking about viruses recently, and wondering how exactly antiviruses keep up? Considering anybody who'd been coding for a few weeks could hack together something do do nasty, nasty things ...
14
votes
6answers
11k 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 ...
25
votes
17answers
6k 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 ...
8
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 ...
16
votes
6answers
13k 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 ...
11
votes
4answers
4k 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 ...
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) ...
10
votes
3answers
67k 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. ...
33
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 ...
11
votes
10answers
865 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 ...
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
13k 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
18k 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 ...
13
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
6answers
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
9k 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 ...
2
votes
4answers
16k views

How can I monitor and report file copy activities in Windows XP?

I have some developer machines that part-time developers come and work on. I want to monitor and report if they copy any files to external media or attach files to their email accounts (and so on). ...
9
votes
14answers
50k 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 ...
7
votes
3answers
2k views

How to determine what is running in DLLHOST.EXE that's missing /ProcessID switch?

I have multiple dllhost.exe processes running on my computer: Every one of these image's command line is missing (what I am thinking is) the requisite ...
7
votes
7answers
2k views

Am I secure from network monitoring software if HTTPS is used?

I will be logging into my bank account and my personal email accounts at work. Its not banned at work, but I just don't want them to save/log a copy of whatever I do with these services. Especially my ...
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 ...
8
votes
4answers
33k 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
7k 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
2answers
5k views

In Windows 7, How to query times, when the computer was locked?

Is there a way to get a list of the following times: whenever windows is locked (using windows+l combo) whenever windows is unlocked in the past week? I've tried poking in the event log, to no ...
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
1answer
1k views

Is windows remote desktop secure?

Is windows built-in Remote Desktop secure? I mean, does it use any encryption methods? or someone can hijack the data that have been transferred between two system?
0
votes
3answers
376 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, and these public computers are virus ...
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 ...
81
votes
8answers
22k 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. ...
56
votes
6answers
4k 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 ...
50
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 ...
11
votes
4answers
3k 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 ...
21
votes
8answers
110k views

How to remove security from a PDF file?

I am trying to fill out some docs, but the provided PDFs are "SECURED", meaning I can't use FoxIt's typewriter tools. Is there any way to remove the security?
16
votes
6answers
5k 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 ...
10
votes
3answers
12k 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 ...
25
votes
19answers
19k 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? ...
12
votes
2answers
31k views

What is the difference between a proxy and a VPN?

There are several service providers out there that allow a user to circumvent firewalls or anonymize their web access. Some of them use proxies, some use VPNs. Most people say that VPNs usually work ...
50
votes
2answers
114k 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 ...
22
votes
8answers
12k 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 ...
16
votes
2answers
33k 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 ...
38
votes
4answers
15k 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?
11
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 ...