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

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Windows Defender vs. Security Essentials in Windows 8

What is the difference between Windows Defender on Windows 8 and Microsoft Security Essentials? They practically look alike, so is there a need to install Security Essentials?
7
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4answers
3k views

Would you setup a DMZ at home?

From a security point of view, what are the benefits of going the whole hog of setting up a DMZ at home if you plan on running a low traffic (unpopular) website from there? There are a number of ...
6
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6answers
621 views

Run user code safely

I have to mark C code and part of that involves running and timing their submissions. The problem is that their code then runs as me and they can in principle do whatever they like using my ...
6
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3answers
2k views

Are anti-static wrist bands really safe?

Is grounding oneself using anti-static wrist band (connected to ground wire & having a protective resistor) still dangerous in case a very high current flows through the ground wire (due to some ...
6
votes
3answers
364 views

security concerns in dual-boot Linux, Windows system?

I plan to install Windows Vista on my second hard drive partition, with Ubuntu Hardy remaining on the first partition. How likely is it that any security holes that may exist in Vista could allow ...
6
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6answers
2k views

Is it safe to put a Mac directly on the internet?

In the past I have always run a NAT router between my Windows PC's and the internet. I'm wondering if I still need this or whether the OSX firewall is good enough to let me put a Mac directly on the ...
5
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2answers
10k views

“Cannot connect to the real Gmail.com”

Dunno what happened, but suddenly I cannot connect to Gmail from Chrome on this computer: Under "more" it says: What does this mean? gmail.com normally uses encryption (SSL) to protect ...
5
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2answers
2k views

Secure PC-to-PC voice call without going through a server [closed]

I want to voice-chat to a friend over the Internet. (Video would be a nice bonus.) I want the conversation to be private and I do not trust Skype, Google, etc., so I want it encrypted end-to-end. ...
5
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3answers
629 views

Chrome Saved Passwords security issue

If I save a password in Google chrome someone else can easily see the password from Setting -> Advance Settings -> Manage saved passwords -> Show (in required password field) and use it ...
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6answers
6k views

Rock-solid hardening of a Windows 7 system?

I am historically a Linux guy, and only use Windows when I absolutely have to via VM. However, I recently purchased a new rig so that I can keep a dedicated Windows 7 machine up for hard work ...
5
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2answers
627 views

Why use a VPN connection? [closed]

I've been reading the news about Lulzsec and I was wondering why they use a VPN before connecting to Tor or proxy servers? The latter 2 can be used for hiding your identity so why is the VPN used ...
5
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5answers
19k views

Windows Server 2008 Create Symbolic Link, updated Security Policy still gives privilege error

Windows Server 2008, RC2. I am trying to create a symbolic/soft link using the mklink command: mklink /D LinkName TargetDir e.g. c:\temp\>mklink /D foo bar This works fine if I run the command ...
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8answers
51k views

Is software from NCH Software safe? [closed]

I just downloaded Fling from them (an automatic ftp uploader) having been looking for a good app to do this for a long time. It just seems to good to be true to finally stumble across what looks to be ...
4
votes
1answer
17k views

Webcam automatically takes picture when the computer wakes up

Is it possible to have the webcam take a picture if my computer is woken from sleep mode? I have seen that there are some programs with motion detection, but I would prefer a method that takes a ...
4
votes
2answers
512 views

How can I prevent Desktop Users from viewing the wireless password?

The title says it; I want to prevent users from viewing the wireless network password on Ubuntu. It's easily viewable through the included application called seahorse.
4
votes
6answers
7k views

Safari keeps asking permission to access the keychain

Normally when I save a password in Safari it will get added to my login keychain without fuss (assuming that it is already unlocked). But after I set a a master password the default keychain was ...
3
votes
4answers
24k views

How do I remove a usage restriction from a PDF file?

I have made usage restrictions to a PDF file and protected it with a password. Now I would like to remove the protection to allow my self to do more with the document. Doing a Google search for ...
3
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3answers
2k views

How does a downloaded ISO get corrupted? [duplicate]

Possible Duplicate: Is it possible to get corrupted download with http? I downloaded an ISO for fedora. Went to install it as a VM. It failed 5 times the installer. The warning for the ...
3
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2answers
495 views

Weird hits on port 2703

I'm getting these periodical console messages on my Mac: 7/22/11 8:01:03.925 AM Firewall: Stealth Mode connection attempt to UDP 10.0.0.1:2703 from 91.143.232.133:15881 7/22/11 8:01:05.885 AM ...
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votes
3answers
2k views

Change permissions on folders (mass)

I've had some problems in my server and now I need to give some write-permissions on some folders, but I have a lot of folders to do it. My server is Windows Server 2008, and if I select all folder ...
3
votes
2answers
5k views

How to use ATA security on a hard disk in practice?

My SSD HD supports ATA Security. Does Macbook EFI and linux support it? I know hdparm does. Who will do the unlock at each bootup? Can I still set a password without erasing the disk? Update: removed ...
3
votes
8answers
593 views

Does using a certain kind of numbers make a good password?

Do special numbers (transcendental number, first few elements of a certain sequences and so on ...) make good passwords in terms of brute force breaking ? EDIT: Why am I asking this ? A friend of ...
2
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1answer
837 views

Scripting Bitlocker Decryption of a local hard-drive

In summary: I'm attempting to create a script that unlocks (decrypts) a hard-drive on the Windows 7 Ultimate local machine, then execute a couple of programs afterwards. I have a small SSD that ...
2
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2answers
1k views

Security warning in Win7 from the Links directory

Every shortcut placed to the Links bar (C:\Users\user_name\Favorites\Links) shows this security warning: Open File - Security Warning Name ... Type: Shortcut ... files from Internet etc. I can ...
2
votes
1answer
7k views

Windows-7 system files integrity

Is there a tool that will check integrity of system files in Win7 and search for invalid or changed ones. I would like to find which files were changed by rootkit installed on system. It would be nice ...
2
votes
2answers
21k views

“Trusted Sites” settings in Google Chrome

Is there equivalent of Internet Explorer Trusted Sites settings in Google Chrome? Here is the issue: When I download an excel file from a website using Chrome the file is marked as unsafe as seen on ...
2
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4answers
203 views

Practices/tools to remove personal data from a computer

I'm leaving my current job and want to remove my personal data from the Windows computer I was using. The way I want to do this is to remove my user from the system and erase my directory under ...
2
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3answers
2k views

What's the easiest way to detect and delete “Flash Cookies” [duplicate]

Possible Duplicate: How to automatically remove Flash history/privacy trail? Or stop Flash from storing it? This article has some disturbing information on how "Flash Cookies" even ...
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3answers
2k views

How to lock Windows screen on startup? [duplicate]

I like to go get coffee while the computer starts. However we have a policy that says the screen must be locked when away. How can I make sure that the screen locks immediately after logging in?
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3answers
15k views

Can't unlock the folders that I locked with 'Folder Lock' program

I use Folder Lock Version 5.2.6 Problem : It asks for new password each time I open it. Bigger Problem : I had locked many folders with this software when it was working fine. But now I can't access ...
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2answers
162 views

Tracking information on HTTPS connection

My organization uses cyberoam firewall. They are monitoring all activities including my search text in Google, Wikipedia etc. So recently i changed to HTTPS versions and now using HTTPS connections of ...
1
vote
1answer
452 views

Are the Windows 8 Password, Pin, Picture Password options all equally secure? [closed]

Windows 8 allows me to log in with my Microsoft Account username and password. But Windows 8 also lets me setup a 4 digit pin. It also lets me setup a three gesture touch password. These are ...
1
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3answers
1k views

How do I know whether my Debian is being hacked/infected?

My laptop seems to be acting rather weird - saying that another person is logged in when I try to shut it down (or maybe it likes being turned on). So how do I know whether my Debian laptop is being ...
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1answer
200 views

Can Windows based computers ever be secured? [closed]

In light on this excellent article series by Ars regarding the black security work by HBGary - HBGary claims to have coded several rootkits and had access to 0-day exploits that could compromise a ...
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2answers
12k views

how to grant access to a folder using cacls

I have revoked a permission for a folder test using cacls. cacls d:/test /D adsd14 Now I trying to reassign permission to this folder using the same command. cacls d:/test /E /G adsd14:F ...
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2answers
661 views

How does Antimalware Doctor infect computers?

I didn't do anything stupid like run random .exe or visit questionable websites, but as I was just Googling I get infected by Antimalware Doctor. At that point I just shutdown my computer and ...
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2answers
1k views

Linux File Permissions & Access Control Query

Let's say I am user bob in group users. There's this file: -rw----r-- 1 root users 4 May 8 22:34 testfile First question: Why can't bob read the file as it's readable by others? Is it simply ...
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2answers
4k views

Allow one Windows user to only execute 2 applications

I'm using Windows 8 Pro. I'm trying to create a very limited Windows account. The account will only have: Remote Desktop Access Shell replaced by our own in-house application Access to the one FTP ...
0
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4answers
4k views

Securing Windows 8 against changing utilman.exe to avoid login bypass?

Is there a way to secure Windows 8 against this login bypass? Basically an administrator can rename the utilman.exe (for example, to utilman.exe.bak) then copy cmd.exe to be utilman.exe, then at the ...
0
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1answer
5k views

Resolving “HttpAdaptor JMXInvokerServlet is accessible to unauthenticated remote users” vulnerability

Recently our security info team has determined there is a vulnerability in one of our systems. Vulnerability description: JBoss HttpAdaptor JMXInvokerServlet is Accessible to Unauthenticated ...
0
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2answers
282 views

Program to wipe HD? [duplicate]

Possible Duplicate: Securely format a hard drive How to wipe a USB hard drive What is a freeware app i can use to wipe a HD? I have two 1) My external which is <1yr old and is ...
16
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2answers
2k views

Is securing Wifi with MAC Filter enough?

I have a MAC filter in place for everything that connects to my router. I also have WPA2 on the wireless. When a friend comes around, I tell them the password (I trust them), they type it into their ...
10
votes
2answers
29k 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 ...
10
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4answers
12k views

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 ...
9
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6answers
6k views

Port scan revealed port 1111 open. What is it?

I am new to systems administration and have a new server running a website with http (at port 80), https (at port 443) and ssh (at port 22). I did an nmap port scan using my personal laptop and other ...
9
votes
4answers
430 views

If a “forgot your password?” page emails your old password, is that definitive proof that they have stored it in plain text?

When a site emails your old password, as opposed to requiring you to reset it on the site, I'm wondering what that implies about their security measures. Does this mean that they store the password ...
8
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2answers
2k views

What does Trusteer Rapport do?

Recently, both of my banks have been trying to foist Trusteer Rapport on me when accessing their online banking services. I haven't downloaded it because I can't figure out what it actually does, and ...
8
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4answers
3k views

If I use an SSH tunnel to get around a firewall, what does the sysadmin see?

I use an SSH tunnel for the port my browser uses to access the internet. The result is I get around the firewall my network uses, which prevents me from using many sites I want to use (facebook, ...
6
votes
4answers
623 views

How to determine the entropy of a password

How can I tell if a password has good enough entropy to prevent brute-forcing on a realistic timescale? For example, if I have the following password, how can I determine if it is strong enough to ...
6
votes
3answers
2k views

Block domain, website, without waiting for localhost (hosts)

There is a related question here. I can use Administrator, install extra software, whatever needs to be done. My problem is: I can't block websites entirely. Like in AdBlock Plus, you add a rule ...