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

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7
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3answers
418 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 ...
7
votes
5answers
5k views

can a virus execute by itself?

is there any type of viruses can execute by itself after download then on the HDD without clicking on it?? if there is ..... can you refer me to any sites about them?
6
votes
3answers
3k 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
8answers
63k 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 ...
6
votes
6answers
691 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
votes
1answer
3k views

Audit failure 5061 after logging in to Windows 10

Logging in to Windows 10 Build 10547 I see for a split second a message box pop up. There's no time to read it as the login succeeds. In the event log I see: Audit failure 5061 with a task ...
6
votes
4answers
20k 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 ...
6
votes
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 ...
6
votes
5answers
84k views

How to avoid Windows Genuine Advantage for an XP update?

I am about to apply updates to a windows xp installation I have not booted in a couple of years. When going to update.microsoft.com, it forced me first to accept an activex installation and now it ...
5
votes
3answers
658 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 ...
5
votes
2answers
4k views

Are there any downsides to enabling Hardware Virtualization in the BIOS?

I was wondering if there are any downsides (even theoretical) to enabling Hardware Virtualization in the BIOS. I noticed that it is disabled by default, and perhaps it is that way for a reason ...
5
votes
2answers
11k 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
votes
2answers
634 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
votes
2answers
8k views

How to unblock chm files - unblock button is missing

I downloaded a CHM file. When I double click it it prompts me to open / save / cancel. Whether I open or save a new copy, the 'new' version will prompt the same open / save / cancel popup ad infinitum....
5
votes
2answers
2k views

How can I prevent Windows 10 from sharing wifi details with my contacts?

In recent release of Windows 10 we could see a new feature named wifi sense, which raised the following security threat as per this blog post : This brilliant new feature, which Microsoft has ...
4
votes
6answers
8k 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 ...
4
votes
2answers
619 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 ...
4
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 ...
4
votes
2answers
478 views

secure file erase on SSD

With ssd's drive levelling feature using different sectors for files, would using an erase program like eteraser's privacy guard and setting it to securely wipe all free space and file slack securely ...
3
votes
0answers
561 views

Use EMV-enabled Credit Card (chip card) for Windows Smart Card log-in?

I have a USB Smart Card Reader and a Credit Card with Smart Chip (EMV) on it. So I was wondering if I can associate this card to my Windows Administrator profile (local user account) and use it as a ...
3
votes
5answers
48k views

This operation has been cancelled due to restrictions in effect on this computer

I have this HUGELY irritating problem on Windows 7 (x64). Whenever I click on ANY link (that exists on a Word document, Excel or Outlook), I get an alert box with the message: This operation has ...
3
votes
3answers
3k 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 failure ...
3
votes
3answers
3k 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
3answers
2k views

Using an unecrypted decoy OS with truecrypt hidden OS?

Can the truecrypt bootloader be configured to run a non-encrypted operating system as well as an encrypted operating system on the same computer? That is, a dual-boot with an unencrypted "guest use" ...
3
votes
1answer
4k views

How to respond to Windows Security Alert in Windows 7?

I got a "Windows Security Alert" in Windows 7. This is because a program (Spotify) on my computer wants to use the Internet connection. But I'm not sure what these options mean. Windows Firewall ...
2
votes
1answer
235 views

How to add an account when Thunderbird warns “potentially vulnerable to CVE-2009-3555”?

I just updated to Thunderbird 3.1 and now when I attempt to add in a new email account for one of my domains I get mail.server.example potentially vulnerable to CVE-2009-3555. Now reading up on it ...
2
votes
1answer
437 views

How do you do examine a Google Chrome extension before installing it?

I found what appears to be a very cool extension for Google Chrome - a Dropbox addin that lets you compare versions of files in your Dropbox by using a diff tool. Like most Chrome extensions, this ...
2
votes
1answer
970 views

Is there a limit to the number of IP addresses for a Windows Firewall rule's Scope?

I've got a Powershell script that adds IP addresses trying to run brute force attacks on my server to a firewall rule that blocks them from accessing it. Recently it stopped working, and started ...
2
votes
2answers
2k 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
2answers
28k 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
votes
1answer
1k 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
votes
4answers
20k 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 ...
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
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 traditional ...
1
vote
2answers
218 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
186 views

security: SecKeychainItemDelete: UNIX[Operation not permitted] on OS X when trying to remove a system root expired cert

So I see some expired certs under 'System Roots' (not 'System'), so I want to delete them via cmd. sudo security delete-certificate -c A-Trust-nQual-01 /System/Library/Keychains/...
1
vote
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 ...
1
vote
3answers
3k 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?
1
vote
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 ...
1
vote
2answers
14k 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 ...
1
vote
1answer
593 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 super-...
1
vote
3answers
2k 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 ...
1
vote
1answer
202 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 ...
0
votes
1answer
78 views

I think somebody has access to my computer

Yesterday I received emails from Origin (EA) saying that my password, email and username were all changed. Not having done that myself, I reverted the changes, called EA security, set up a 2-step ...
0
votes
2answers
288 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 reported '...
0
votes
4answers
5k 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 ...
17
votes
2answers
3k 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 ...
13
votes
4answers
17k 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 ...
11
votes
4answers
358 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 ...
9
votes
4answers
442 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 ...