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

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3
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2answers
14 views

Limit Excel Macro Usage to Certain Users

I want my Excel macros to activate for certain users recognized by Windows Excel. How do I do that?
0
votes
0answers
23 views

Make Windows send me a text message everytime I log in

I already have two-step verification set up for my Windows live account. This manifests: Every time I log into the live account from the browser: I get a text message on my phone with a security ...
114
votes
17answers
114k views

How do I list the SSL/TLS cipher suites a particular website offers?

How can I retrieve a list of the SSL/TLS cipher suites a particular website offers? I've tried openssl, but if you examine the output: $ echo -n | openssl s_client -connect www.google.com:443 ...
1
vote
1answer
15 views

How can I secure a FTP transfer using like an SFTP middleman

I have a little home security camera that has FTP capabilities to upload captured videos/images to an FTP server. The only thing is I use a droplet on digitalocean to store my content but I don't ...
0
votes
0answers
12 views

Laptop rarely loading web pages

My computer rarely can load any web pages and takes a long time when it can. It says that the webpage is not available. I have tried running Malwarebytes, however it said there was no threats. I am ...
0
votes
1answer
25 views

How to find which process made this network requests

I was running fiddler and suddenly I see requests this requests to hxxp://zc.qq.com/cgi-bin/chs/numreg/init? and hxxp://www.baidu.com/cache/global/img/gs-2.0.gif But no process is shown. How do I ...
6
votes
2answers
219 views

Why might a browser sometimes ask for confirmation when going to an HTTPS page?

When I click on a link to an HTTPS link, the browser will sometimes ask for confirmation or channel me though a form before it will allow me to se the page. Why would it do this? (This question ...
1
vote
0answers
49 views

Unlock Windows 10 with bluetooth proximity?

There used to be an application or two which would cause Windows to lock and unlock based on the proximity of a paired Bluetooth device. These apps don't seem to exist anymore, and I'm surprised this ...
0
votes
1answer
12 views

A Linux Distribution w/ Version which contains Sendmail version 8.6.9

I'm looking for Sendmail version 8.6.9. What distribution (I don't think that matters) or version of said distribution contains the old 8.6.9 version of sendmail. If I'm going about getting that ...
0
votes
0answers
13 views

How is my password used by bitlocker (in win 10)?

Does bitlocker use my password to unlock a key, which is then used to encrypt the drive? Or is the password they key? If the former, where is the key stored? On the system disk? My concern lies ...
2
votes
2answers
140 views

How can i prevent my windows 10 from sharing wifi details with my contacts

In recent release of windows 10 we could see new feature named wifi sense which raised the following security threat as per this blog post : This brilliant new feature, which Microsoft has dubbed ...
0
votes
1answer
40 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
1answer
21 views

Protecting my PC in unknown WLAN/LAN networks

I once read in another thread on superuser that PCs in a network could try to acess services running on other PCs in the same network Is it considered to be safe enough to enable ufw and deny all ...
0
votes
1answer
14 views

How to check for malicious DNS records?

A router under my control has been compromised, and the attacker has changed the router's primary DNS server to one that I haven't seen before, and it does not belong to any ISP's. I'm guessing this ...
90
votes
13answers
58k views

How to reliably keep an SSH tunnel open?

I use an SSH tunnel from work to go around various idotic firewalls (it's ok with my boss :)). The problem is, after a while the ssh connection usually hangs, and the tunnel is broken. If I could at ...
1
vote
2answers
914 views

Firefox 39 - Secure Connection Failed - weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message

As of Firefox 39, connecting to an old administrative interface for some third party software gave the following message: Secure Connection Failed An error occurred during a connection to ...
79
votes
12answers
141k views

How to wipe free disk space in Linux?

When a file is deleted, its contents may still be left in the filesystem, unless explicitly overwritten with something else. The wipe command can securely erase files, but does not seem to allow ...
17
votes
4answers
8k views

Do I need to have a passphrase for my SSH RSA key?

Before I started at my current job (at a small business), my office had no firewall on the network and literally nothing was ever being backed up. Now that I've signed on as a dedicated sysadmin / ...
1
vote
1answer
467 views

What alternative security measures are there to full drive encryption (for performance reasons)?

I'm evaluating full drive encryption using Truecrypt on my Crucial M4 SSD on Windows 7 32bit Pro on my Toshiba NB100 Atom N270 Netbook. I've encrypted this and noticed an increase in the boot time ...
-2
votes
0answers
23 views

Why do some sites that offer OAuth still require a password? [closed]

I'm looking for an actual technical reason why the security offered via a OAuth provider (Google, Facebook, etc...) would not be sufficiently secure for authorization purposes. What is gained on a ...
2
votes
2answers
44 views

Why is my computer listed twice in my network on two different ip's one ending in .255?

My computer is listed twice on the network (same MAC address and description) with one IP ending in .255, which leads me to believe I may being spoofed. Is this route table unusual? I'm not ...
0
votes
0answers
672 views

Disable Protected mode in Internet Explorer Security options

I need a small help to disable the protected mode in IE 8. Here is my scenario. I have admin rights on my machine, but I am not able to disable Protected mode. When I Run IE as Administrator also, I ...
-4
votes
1answer
81 views

A hacker changed my website's hosting password [closed]

I'm developing my own website from a template I bought from HTML5UP, my web is still under construction, but it is uploaded to my server for testing. First suspicions things happened just after I ...
0
votes
0answers
112 views

Thunderbird: Error: imap.server.com : server does not support RFC 5746, see CVE-2009-3555

I'm getting this error when checking my mail, and I can't download my mail. I recently updated Thundirbird yesterday, but it restarted and was working fine for many hours. I saw this question: How to ...
4
votes
2answers
196 views

What damage can adobe flash player do to a linux machine?

I am curious what damage can adobe flash player do to a linux machine. I have read the adobe flash security bulletin and I saw that a lot of vulnerabilities affected linux(crossplatform). Please ...
0
votes
2answers
40 views

It it possible for a MitM attacker to know when a browser has gone into incognito mode?

This may be better suited to security, but since it's about a specific feature of software, I thought I'd ask here. Lets say that I am viewing a website, and I open a tab in incognito mode (unless ...
2
votes
1answer
4k views

Can't change or set password in Windows 7

I'm trying to set up a new user in a Win7Pro computer. The computer has HP ProtectTools enabled. I cannot set the password from within HP ProtectTools or the User Accounts control panel, when logged ...
8
votes
8answers
25k 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 ...
8
votes
3answers
3k views

Why are email transfers between mail servers often not encrypted?

Users can often choose if they want to access their email provider (such as Gmail) using a secure channel (e.g. using HTTPS). However, to the best of my knowledge, when it comes to ...
1
vote
1answer
6k views

Name resolution for the name…timed out after none of the configured DNS servers responded

I am getting this message in system event during my PC startup Name resolution for the name website.com timed out after none of the configured DNS servers responded. And another same message ...
0
votes
2answers
14k views

How to display the last user logged in Windows 7 PRO x64 logon

I want Windows to show the last user logged, so I only need to type my password, and I don't need to select my username. I thought it should be the default Windows behavior, but I've just installed a ...
1
vote
0answers
73 views

How do I stop a simple DDOS attack? [migrated]

There is a hacker who is mad at us, and has started a DDOS attack against us. I think he is a script-kiddie, using tools like DarkComet; the attack is probably simple. I host a server on my PC. The ...
0
votes
1answer
4k views

Robocopy copying files from source to destination in backup mode and with file security permissions intact

I need to utilize robocopy to mirror files and folders from one shared location to another shared location, in restartable backup mode with security permissions. My current command is: robocopy ...
0
votes
1answer
25 views

Need local security rights on Windows 8.1

A program I am trying to install (Hazus 2.0) requires the following: "Confirm that the user account that is running the setup (in addition to having admin rights) has the following Local Security ...
2
votes
0answers
28 views

UAC settings are automatically disabled at least once a day

I have a weird security risk that I have submitted to our IT Operations without any luck; at least once a day, our machines running Windows 7 and newer has the UAC settings disabled, and we discover ...
1
vote
1answer
26 views

How to allow user to access only his personal directory when his group has access to the whole disk?

I want to disallow a user to access to disk D: except his personal D:\Documents folder. The user belongs to Users group. I don't want to restrict the whole Users group so I should somehow create a new ...
-2
votes
0answers
35 views

Can a System Repair Disk “user account” access any file?

I want to create a simple disk image using a System Repair Disk by simply copying all files to another disk. But can it access all files? I know that when I try accessing the Recycle Bin file on an ...
2
votes
2answers
2k views

Bypass Windows 10 UAC “This app has been blocked for your protection.”

I ran into this problem when trying to install the USB (MTP) drivers for my Samsung Galaxy S4. Windows will not run the driver installer. It seems the reasoning is the publisher is not trusted. My ...
1
vote
0answers
15 views

Route only HTTPS Connections through TOR

I want to create an tor router on my network using an extra computer I have (2011 Mac Mini). Since the exit node can read/modify traffic that is not end-to-end encrypted, I would only like to route ...
-1
votes
0answers
21 views

can I see device browsing history in the server?

My question is that is it possible to see our browsing history in the server, or can the service provider when he/she logs in to my account view the devices that are connected and the URLs that the ...
2
votes
1answer
4k views

How do I figure out if my wireless network has WEP, WPA or WPA2 security via command prompt on Windows XP?

I understand how to check what security protocol my wireless network connection is currently using by going to the Wireless Network Connection window like in the following example but how does one ...
2
votes
2answers
4k views

VMware workstation windows host shared folders issue

My laptop is a Linux mint powered host and a windows 8 guest via VMware Workstation. Yesterday, I get the bad and stupid idea to upgrade my windows 8 to windows 8.1 final release, using the Installer ...
15
votes
6answers
12k 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 ...
1
vote
4answers
3k views

How can you find out if xlsx and docx files are safe to open?

I have received an email from a not entirely trustworthy source, it might be legit but I'm not really sure. It contains, among other things, information on a .docx Microsoft Word file and a .xlsx ...
0
votes
1answer
55 views

osx - how to programmatically disable USB ports

I'd like to programmatically block, disable or (better) power-off USB ports on my system. The closest thing I found that resembles or provides such similar control is vmware-usbarbitrator on a guest ...
0
votes
3answers
37 views

Why use codes for login names [closed]

I consult to many companies and I notice that some of them use codes rather than some variant of the user's name for their Windows login ID, e.g. u54aju or k56743... What is the reasoning here? ...
4
votes
5answers
171 views

best practice procedure for browser use on unsecured WiFi

At this posted question is the advice you need to always check that the SSL connection shows up green in your address bar and/or manually double-check that the certificate is valid when using ...
0
votes
0answers
14 views

Default “connect automatically” to disabled for new wireless networks

I'm using Gnome NetworkManager and I don't want my wireless attempting to connect automatically to any network. For an individual network to which you have already attempted to connect, this is easy ...
0
votes
0answers
41 views

How do I change my IPV6 adress and protect myself from DDOS attack?

So recently I accepted a random person on skype, this person started DDOS'ing me (atleast I think this is what itis) the person told me he was gonna DDOS me. The first thing I did was removing him, ...
3
votes
5answers
17k views

How to prevent the sethc.exe hack?

There is an exploit that allows users to reset the Administrator password on Windows. It is done by booting from a repair disk, starting command prompt, and replacing C:\Windows\System32\sethc.exe ...