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

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WhatsApp end-to-end end encryption

I went through WhatsApp Security White Paper which talks about how WhatsApp end-to-end encryption is achieved so that third party and even WhatsApp can't decrypt a message transmitted between sender ...
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1answer
108 views

Security regarding nginx + php on CentOS 7 with OwnCloud 9

I'm trying to setup a OwnCloud Server v9 for my freelancing purpose. SPECS: - CentOS 7 - nginx - php I'm a little bit confused. I can find only the info about the PHP Version 5.5 in the ownCloud ...
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1answer
30 views

Is it possible to monitor traffic and identify rogue outgoing emails from mobile devices using a PC as a wireless hotspot?

I've discovered that my home network IP address has ended up on several blacklists after spam traps received emails from this IP address. I've tested the one PC that uses this network, and it seems to ...
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22 views

Block all inbound traffic except one IP using windows firewall rules

I have no problem doing this in linux. I just write an iptable to block all traffic and another one after to allow a specific IP. However it doesn't look to be that easy on Windows. I did the exact ...
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1answer
27 views

What does single user mode in Linux/Unix means and how is it different from Safe mode in Windows

What is Single User mode used for? Can it override the root Password? Do you need a password to acces the SU mode? In a normal session when you run SU command does it stands for Single User or Super ...
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1answer
43 views

Effect of “windows defender is taking action to clean detected malware”

Sometimes I get this message, but when I look at the history of windows defender, I see nothing. I am scared that windows is mistaking something important for a malware and deleting it without me ...
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1answer
102 views

How does Bitdefender's Crypto-Ransomware Vaccine work?

I have read responses (66 currently) but still have no idea how this tool works. "Razvan Stoica says: It’s a vaccine, but it can (and probably will) be updated against new strains, hence the need to ...
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1answer
66 views

Is there a way to display a watermark on the screen at all times?

I am working in a government position where we regularly process confidential information. We are looking into a possible way to patch the analog-hole problem and discourage users from taking photos ...
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1answer
9 views

How does IPsec operate in NAT environment?

I know that if you mess with IPsec header it will drop the packet and NAT is build exactly for that. How do they deploy IPsec where NAT is also needed.
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1answer
28 views

Web Server Security : www directory

I have a question about Web Server, especially PHP / Apache Server. A Developer told me and my colleagues that today it is bad to put our Web directory in WWW directory, because it is unsecured ...
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1answer
43 views

Can't Charge iPhone with Windows with restricted USB Policy [closed]

My company has restricted our laptop machines for any external mass storage device (probably using Kaspersky Endpoint Security restrictions). Because of this, I am not able to re-charge my iPhone. ...
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16 views

Family Settings on Microsoft?

Over the past couple of days I've kept receiving this message on my Windows 10 Laptop, "Your family can see reports of what you do on this device..." Last time I checked my family never put any sort ...
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1answer
57 views

I can access my neighbour's powerline ethernet network. Does that mean he can steal my power?

I was under the impression that the electrics in my totally normal semi-detached house were sufficiently isolated from my neighbours' that it was impossible for my powerline networking adapters to ...
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1answer
28 views

Virtual Machine Port Forwarding Security

I would like to be able to have a Virtual Machine connected to my network hosting a game server / Apache server. The only concern I have is the security of opening up ports to the internet. I want it ...
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1answer
46 views

Simple ARP poisoning attack with UNIX?

I would like to know how to do a simple ARP poison attack with UNIX commands only (no ettercap or arpspoof or anything like that.) I don't care about forwarding packets to the actual router, I just ...
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17 views

Is it possible to require a TOTP on Windows Login using existing or custom software?

I have always been looking for a way to require a Two-Factor Authentication (One Time) Passcode on my Windows Login. Using an algorithm such as TOTP, this should be easy, and require no internet ...
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32 views

Force Desktop OneDrive to Prompt for Password

I use the Windows 8 implementation of "Desktop OneDrive" to create and access files stored in my OneDrive account. My OneDrive login is also my Windows login so that when I'm using my computer all my ...
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2answers
75 views

Local disk: “These files might be harmful to your computer”

When moving or copying files from my local harddisk, I get the message: These files might be harmful to your computer. Your internet security settings suggest that one or more files may be ...
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1answer
59 views

Do malicious web sites ever exploit vulnerabilities in Linux clients?

Do malicious web sites ever exploit vulnerabilities in Linux clients? Are there any documented instances of this happening in the wild? I am talking about actually taking over the client's machine ...
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2answers
41 views

Denied SYSTEM access to my drive, how to re-enable it?

I gone into my drives properties and denied SYSTEM's access to it: Now I can't access that drive and can't find a way to return the system access. Tried to add it this way but it didn't work: ...
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1answer
74 views

“sudo screen” vs. “screen -> sudo”

When I want to drop a root shell into screen, I usually do sudo screen. A friend of mine first launches screen, then drops a root shell in the screen session. What is the better way of both from a ...
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1answer
62 views

ClipConverter.cc and “Leave this page” pop-ups

So I currently use ClipConverter.cc to convert music from YouTube into .mp3 files. The site itself is innocent and in my opinion is the best website to grab high-quality music from YouTube. However, ...
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69 views

Java out of box cacerts certificate are SHA1 is there one with SHA2

Java/JDK/JRE they have a keystore cacerts under lib\Security folder as shown below Java comes with around 93 certificates out of box, These are not self-signed these are supplied by java itself ...
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84 views

Unlock Samsung SSD 840 PRO with hdparm

My Samsung SSD 840 PRO is locked with a password set by using the BIOS. Every time I turn on the computer, I have to type in the password. Cause there is a BIOS bug, I am not able to change the ...
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1answer
42 views

Dictionary attack in Bash with cURL

I'm fairly new to Bash, but this is a script I've been working on for the past few days. It's meant to run a dictionary attack on an HTTP-POST login for a website, by reading the time module and ...
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1answer
209 views

How to Disable WebRTC in Google Chrome

I understand there are security vulnerabilities exposed when WebRTC is enabled, so I would like to disable it in Chrome. How does one do that? I thought I'd be able to do it under chrome://flags, ...
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28 views

Disabling Google Smart Lock but still save passwords

I use Chrome on Windows 7. Every time the browser asks to save my password it's saved in the cloud unless Google Smart Lock is off but it this case I have to reenter the password each time I log in to ...
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20 views

What log would show what in Windows blocked a programs' access to the Internet?

We have a program that connects to the internet to check registration for a subscription. Something on a customer's computer is blocking that. It's NOT: Windows Firewall (I disabled it. Problem ...
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1answer
21 views

Keypairs are stored securely on HSM. But during a smart card enrollment process, isn't the private key supposed to be injected into the smartcard?

I understand that in a PKI that utilises HSM, the key pairs are securely stored in the HSM. Applications that require encryption/decryption capabilities will communicate with the HSM via APIs. ...
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1answer
75 views

Is it possible to prove that a hard drive was within a certain PC?

I have a situation in which a person has been accessing confidential information from another PC which they shouldn't have accessed and stored the acquired information on their own PC. Since all of ...
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1answer
41 views

SSH key verification for many hosts behind a single DNS name

(note: this seems similar to an existing question, but I believe there are some differences in the implementation details here) The Problem I've got a few hundred hosts behind a single DNS address. ...
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1answer
54 views

I spliced Raspbian and Kali by accident… should I be worried?

So, I recently got a Raspberry Pi. I installed Raspbian Wheezy on it immediately, got it all set up with SSH and VNC, and ready to go. One day I decided that it would be a brilliant idea to install ...
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3answers
48 views

Who generates the keys?

I think I know the answer, but I'll ask anyway... I'm being given access to a remote server with SSH access. Who should generate the private/public key pair? My understanding is that I should ...
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1answer
24 views

Using IPS and IDS together for Defense in Depth

With in-depth knowledge of IPS and IDS, how can we use them simultaneously to achieve better security?
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1answer
20 views

export single keychain item without ui

Sadly I have problems with OS X and the UI just won't load. But I have ssh access to my machine. I would like to reinstall OSX but I have forgotten my Time Machine password. It is saved in the ...
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85 views

Disable Checkpoint Endpoint Security Policy

I have the same problem as this (How to disable the security policy with check point VPN-1 secure client?) but with an other client from checkpoint. I have the Checkpoint Endpoint Security Version ...
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0answers
15 views

Protect debian from a typical dropper (malware)?

I have a Debian box that I have pretty secure. Browsers are rarely used, except lynx which is used almost exclusively to download specific files. The daemon servers running on the machine are just a ...
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38 views

malware or Google Drive not working due to batch file being opened by text editor by default

I'm seeing some suspicious behavior on startup, and am wondering if I should be concerned. What's happening is C:\Users\<me>\AppData\Local\Temp\tmpevpnra\run.bat is being opened in Notepad++. ...
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1answer
1k views

How to get an alert when someone logged on my PC?

I wish to send myself an mail, a message or an alert when someone logged on my machine. Is that possible to configure on my Windows 7 machine?
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21 views

How can throughput be greater than the bandwidth? Is this a valid reason?

I asked this question on networking engineers but it was closed as off topic since it wasn't for professional application. Hope it fits better here. I'm studdying for the CISSP secuirty exam and a ...
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31 views

Applying Security Setting on the User Folder of a Mounted Hard Drive taking too long

I really need your help, as I am in trouble. I ended up damaging my hard drive and now I am trying to recover my latest data from it. It is a laptop hard drive with model WD5000BEVT and with 500 GB ...
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13 views

Firefox security policy or addon to deny ajax

I really do not like how some webpages abuse AJAX requests polling the servers every other second for some page update. It eats bandwidth, and generally sucks. While I am not concerned with bandwidth ...
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2answers
82 views

Under Linux, is it possible to encrypt a folder/partition in a way that it is not accessible to anyone without the password?

I was reviewing the different alternatives I have (like ext4 encryption) but I think all of them are vulnerable for root to just enter into my home account and see what's stored in there, which is ...
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0answers
19 views

Allow network traffic only on a network with specific SSID

I know about options in Windows Firewall to limit certain apps to e.g. certain ports but is it somehow possible to limit communication of a certain application just to a specific network, e.g. ...
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1answer
87 views

My sister hack my computer [closed]

my computer was hack by my sister. She all but told me with her constant comment about thing she could only know by have access to my computer or internet traffic(I tryed to confront her but she just ...
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1answer
53 views

Should I use PAP, CHAP or MSCHAPv2 for inner authentication on eduroam?

There are countless instructions on how to connect to the eduroam network from various universities and research centres. They tend to differ in the recommendation regarding the inner authentication ...
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1answer
33 views

Impero - when does it work?

I have a question about Impero. Does it work when I'm not connected to my school's Wi-Fi? The process "ImperoGuardianSVC" is working all time in background. Impero is a school program to prevent ...
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4 views

DNSSEC with existing private/public key

what I want is the following scenario. There exist single hosts that are connected with each other in a fully meshed network. Every host possesses a RSA key pair (private/public). What I now want is ...
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42 views

How would I use a webcam as a security camera? [closed]

I am making a security system for one of the rooms in my house. I am not willing to invest much on a professional security system, but I want atleast some security. My goal is to use a webcam ...
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29 views

Currently blocking malicious websites with Malwarebyte, what to do next? [duplicate]

This question is concerned with the management of a temporarily contained but potentially active computer virus in a particular case. Background information System information Windows 10, 64-bits, ...