Questions tagged [security]

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

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How to Turn on Secure boot in my Setup correctly

So I want to ask a question but let me talk about my past experience turning on secure boot. My Setup: Intel I3-10100f Gigabyte H410m 8gb Ram rx 570 Hard drive is GPT A few months ago I went into ...
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Sparring with Google: search has suddenly started requesting CAPTCHA constantly

War with Google A couple of months ago, our office was suddenly thrown into turmoil when Google decided to go to war with us. Our identities were at stake: Google was sure that the office consisted ...
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How to resolve Signature Verification Results false positives?

I noticed that there are six DLLs in C:\Windows\System32 that sigverif.exe flags as not having been digitally signed - even though they have been. After digging into it a bit, it looks like the ...
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How to encrypt the password for remmina command line use

When I run the following command, echo "testing123" | remmina --encrypt-password I get the following error Unknown option --encrypt-password I want to encrypt the password and add it to ...
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How to create my own Peephole camera [closed]

If this is not the right area please suggest where to post. I want to build my own peephole camera. My apt won't let me remove the peephole or and no video doorbells. I want to put a camera on the apt ...
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How is oAuth more secure?

Many services, for example IMAP mail by Google, has moved away from user id/password authentication to using oAuth. How is oAuth more secure, besides it being a service provided by a large and well ...
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TeamViewer, UNC, or mapped network drive

Teamviewer, UNC, mapped network drive. What's the most secure of these methods of file transfer within a LAN? I am looking to prevent the possibility of ransomware while also having efficient file ...
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Changing security levels of Fortigate logs?

Tech newbie here. I want to send Fortigate logs to a syslog server. Previously, I was receiving way too many unnecessary firewall logs, 90% of them with a security level of "notice." I have ...
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How to make USB 2FA Security Key?

Is there any ways to build USB Security Key for website 2FA (using normal usb) such as google or something just like Yubikeys? I want to make the USB Security key (like yubikeys or fido) with just ...
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Trouble getting the Chrome browser on a Mac to connect securely over SSL/TLS to Apache 2.4 on Centos

We operate multiple sites that run the Leaf webapp. Our configuration runs on Centos 7.9, with a .NET Web API and Apache 2.4. The system is used only by staff who access our Intranet. It uses a self-...
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Can there be a WRITE-ONLY SD card or USB stick - Can only be read with password, but written as standard drive [closed]

I have seen questions about read only and write protected SD card and USB drives. However I am asking the opposite. A drive that can be written with no special driver or modification, but requires a ...
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Google Chrome security warning: Your connection is not private

Consider visiting a website that have a expired SSL certificate. Google Chrome (Version 102.0.5005.115, Windows 10) presents a warning: NET::ERR_CERT_AUTHORITY_INVALID However, I trust the sites as ...
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Draytek Vigor2862 Strict Bind Allows unregistered MAC to connect via WIFI

Closed. This question is off-topic. It is not currently accepting answers. NE is a site for to ask and provide answers about professionally managed networks in a business environment. Your question ...
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How to configure MS Edge to allow “insecure” downloads?

I’m using Microsoft Edge. Every time I download an article in PDF format, instead of the article I getting “can’t be downloaded securely” message. I have to click on the ellipsis button and click “...
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Can `rapl-set` mitigate the remotely-exploitable "Hertzbleed" Frequency Throttling Side Channel Attack?

Recently a new frequency throttling side-channel attack for extracting key material was published as CVE-2022-24436 for Intel CPUs and CVE-2022-23823 for AMD CPUs, which can be exploited remotely. ...
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Custom secure boot with .WIM file

I am trying to take ownership of the secure boot process of a Windows platform. I have followed some online resources like: https://linuskarlsson.se/blog/secure-boot-when-dual-booting-arch-linux-and-...
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is there a way to tell if a windows PC is online if I know its IP address?

Is there a way to check if a remote Windows PC (not working as a server, just a personal PC) is online on the internet if I know its IP address?
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Flameshot on Gnome 42

A new security feature in somewhere in the display server/window manager stack prevents me from seamlessly using the much loved screen capture utility, Flameshot. I've google for how to restore the ...
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Remotely log out of and wipe chrome data

For security reasons I need to log out of a device that I was previously logged into on Google Chrome (not just logged into Gmail, Drive, etc. but logged in with my Chrome profile). There are some old ...
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Can environment variables be made immutable?

With the recent discovery of the Symbiote vulnerability, it is now apparent that we need a mitigation for LD_PRELOAD injection attacks and similar. One way we may be able to prevent this exploitation ...
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Installing a 3rd party dll in C:\windows folder - Is this ok?

Ref: https://www.youtube.com/watch?reload=9&v=5LvC_UaEhvA&t=8s Third party app called as algomojo installs its DLLs in C:/windows folder. Personally, I always thought touching windows os ...
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How do I stop Android\Google Play from removing permissions from rarely used apps? [migrated]

Is there a way to stop Android 10 or 11 from automatically removing permissions from apps that haven't been used for a month without having to disable all app protection on a given device, or ...
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a secondary wifi router to connect legacy/untrusted (unpatchable) devices

Thanks in advance for grace and patience as I try to understand a potential network configuration... I would like to employ a separate wireless router to connect untrusted (unpatchable) devices to. ...
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Is a webserver's process owning its own config directory a security risk?

I'm using an nginx server as a reverse-proxy for an API. The nginx process is running as a docker container. I am specifically using the nginx-unprivileged docker image, in which nginx is run as a non-...
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Is Galaxy S3 always disclosing an WiFi SSID? [migrated]

I read tons of articles about how is it bad do hide SSID because client devices can disclose the network parameters by constantly "pinging" it when not in range. Ok, here is the client the ...
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Close Ports - Which ones and how?

I am wanting to close ports, to stop myself from been vulnerable to attacks/exploits What would be the best way to locate open ports on my computer and closing them to prevent such activities? Thanks
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Can files on bootable USB stick be overwritten with no reformatting?

Let's say I'll create a bootable USB stick. Can a system on HDD modify, add or delete files on boot able stick without reformatting? If so, will use of SD card with USB adapter be good idea, as they ...
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New install - Windows 10 Pro 21H2 Security Tab missing from "Update & Security" & unable to locate Defender Antivirus

New install of Windows 10 21H2 from official Micriosoft ISO. I have two issues. Issue 1 If I Click Start Button > Settings > Update & Security Normally the third option down the list on the ...
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Prevent accidental use of rm

I was going to clean up a directory filled with write protected directories, so I elevated to root, and instead of running rm -rf * / I ran rm -rf /*. You can guess what happened. Is there a way this ...
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Does `chmod +x` make a file an executable or does it assign execute permission on the file?

Does chmod +x make a file an executable or does it assign execute permission on the file? For example - chmod 111 will allow execute permission to user, group, everyone else.
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How to fix error ERR_SSL_VERSION_OR_CIPHER_MISMATCH

I'm working on a PHP and while the application works in Internet Explorer, within Edge, where I want to run this application, I get error ERR_SSL_VERSION_OR_CIPHER_MISMATCH. How to fix this error?
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Is it expected behavior when a Windows 8.1 iso file says Unknown Publisher?

Using a Windows 10 PC, I downloaded Windows 8.1 iso using a link from here: https://www.microsoft.com/en-gb/software-download/windows8ISO in order to re-install Windows 8.1 on another machine. When I ...
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Generating keypair for backend issuing JWT token

I need to generate a keypair for my backend to issue JWT token. I am using MacOS. I tried on terminal: ssh-keygen -t rsa and path to /Users/john.brk/my_rsa. It generates my_rsa and my_rsa.pub. When ...
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Can a website find duplicate accounts if both accounts are connected to same 2FA app?

Let's say I have a personal and work account on a website and use them strictly on separate devices and ISP. If I have connected 2FA for both accounts to a single 2FA app's account, say Authy for ...
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How to have sudo show the command in the password prompt?

Is it possible to have the sudo prompt to also show the command? the simple [SUDO] password is fine if you were the one to invoke it. But often you run a script and would like to double check what you ...
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bash: patch.exe: Permission denied; how to turn off security regarding 'patch' in program name in windows 10?

I stumbled upon a problem patching a .diff file using patch. I use bash under windows 10 and the result of of this operation is as follows: $ patch < patch.diff bash: /cygdrive/c/cygwin/bin/patch: ...
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Safe way to resolve Windows files owner inconsistencies

I just found out that I have a mix of security properties inconsistencies on my files. The desktop was build afresh 2 yrs ago but with Win 10. It was upgraded to Win 11. Also one disk (not system) is ...
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Make a pdf file (potentially including a virus) secure to open without protected mode

sometimes I have to open pdf files from unknowm source and then print them. I use Adobe Acrobat in protected mode and disabled Java Script. When I want to print or mark something I have to disable ...
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How to enable a specific data connection via VBA in Excel 2016

I'm building a worksheet that will automatically run a web query. Ideally, this will run automatically, without any user intervention. But sometimes the connection is blocked by Excel's security ...
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What should be in the Windows Defender, Diagnostics folder in the registry?

How many entries should there be? One Windows 10 PC has 6 entries, another has 3, in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft Defender\Diagnostics. Examples, from one machine:- RollbackToPlatformVersion ...
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Internet security when working abroad

I work in the UK and would like to work remotely abroad. I have been told by my employers that this is not possible because they can't guarantee that data can be kept safe when using the servers ...
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Why do some Https download links not have a padlock in Firefox?

Why when you go to some download links by typing / pasting in the address bar in Firefox (in Windows 10), does it show https, but there is no padlock? (Similar might be seen in other browsers) Random ...
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How do you know if a code signing certificate for a file is ok?

Which things should you look out for, to indicate all looks okay, when viewing a downloaded file's "Digital Signatures" tab in Windows 10? What are the signs there may be an issue with the ...
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Does IP tables rules takes precedence over /proc/sys configuration?

If I configure both Case 1 and Case 2 in the same Linux server, which case will take precedence over the other? Case 1 – echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all Case 2 – ...
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What is my VPN endpoint vs public ip? StrongSwan ikelifetime not working

I have spent the last week researching and building a StrongSwan IKEv2 VPN server. This VPN is to connect to another organization's data server and will likely also host software to read the data ...
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How do you know if GPG verified the integrity of a downloaded file, and not just authenticated the signature?

How do you know when using GPG4Win/GnuPG/GPG to verify a downloaded file, if the file itself has been verified for integrity and has not been changed? Rather than just confirming the signature. How ...
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Does Pulse secure vpn cause problems using other tools on your machine e.g. terminal and git on Windows 10 machine?

I have a work Windows 10 machine with Pulse secure vpn, I use a cmd terminal on it. I noticed sometimes that using code . doesn't work in opening VS Code, there is a flash on the screen but it doesn'...
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Windows 11 is not storing network credentials when accessing azure files or RDP server

My Windows 11 machine (part of a domain) does not store network passwords/credentials. This happens when i try to connect to an azure file share (using windows explorer) or when i connect to a server ...
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Is a file Overlay a security threat?

How do you tell if the "Overlay" found on some files when searching the hash checksum on VirusTotal poses any threat? Would the Overlay be part of the signed file? Does the VT page ...
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Does Windows 8.1 contain updates when downloaded with the Media Creation Tool?

If I download Windows 8.1 (to install on another PC) using Microsoft's Media Creation Tool would it include many recent updates, and of what kind? (I can find no recent answers). I'm presuming that ...
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