“Wifi network not secure” notification with WPA2 Personal [migrated]

Everytime I connect to my wifi-network with my Windows 10 1909 I get a notification about the network not being secure. The network does use WPA2 Personal though, which I don’t think is insecure. Is there another reason why this notification pops up? And could this have somethig to do with internet cable maintenance in my area?

Combo wifi Alfa [AWUS1900 + APA-M25 + APA05 + APA05-5GHz] [migrated]


What I would like to do

Hello, I want to build a powerful combo for pentests using wifi adapter, amplifier and antenna (see next section). I don’t have bought those components yet because I have a few questions concerning usage and compatibility :

  • Are those components fully compatible ?
  • Do I need to buy 1 APA-M25 per AWUS1900 output or only one is OK ?
  • Same question for amplifier : do I need 1 amplifier per antena output or only 1 is enough ?
  • The AWUS1900 schema suggests that 2 antenas are for 2.4GHz and 2 are tor 5GHz : Does it mean that if I put amplifier on the most left output (from front view), it will amplify only 2.4Ghz ?
  • (Do you have any additional recommendation ?)

Below is the targeted hardware details :

Targeted hardware

  • Wifi adapter Alfa AWUS1900 (dual 2.4GHz + 5GHz)

Alfa AWUS1900Alfa AWUS1900 schema

  • Antenna Alfa APA-M25 (dual 2.4GHz + 5GHz)

Alfa APA-M25

  • Amplifier Alfa APA05 (2.4GHz)

Alfa APA05

  • Amplifier Alfa APA05-5GHz (5GHz)

Alfa APA05-5GHz

How could a WPA2 WiFi with a 40+ character random password have been penetrated

I can confirm an intrusion from an unknown MAC address (identified as a Realtek device), getting a new, valid IP from the DHCP pool, and using the network for roughly 1 hour.

The network is WPA2 – 1 each for 2.4Ghz and 5Ghz both with the same password. The 2.4Ghz network also includes a TP-Link extender, which creates its own SSID, but again with the same password. So a total of 3 networks with the same password.

This 40+ random password was set less than 10 days ago. It is certainly random, with the recommended mix of cases, numbers and symbols, generated by a reputed password manager. There are no proximal patterns I can find or think of, and no characters have been repeated – I made sure of that.

How is it possible for this network to have been compromised so quickly?

  1. Is it even theoretically possible for a 40-character random password to be cracked IN 10 DAYS with anything less than a few hundred multi-GPU setups? I don’t think anyone wants to “get” me that badly.

  2. Is it possible for a network to be intruded/joined without knowing the password at all? A version of the KRACK attack or something similar, targeted at the router or perhaps at the repeater.

  3. Is it possible to perform a LOCAL attack similar to KRACK or BlueBorne on one of the 10-ish client devices, that would have allowed the intruder to read the WiFi password off one of these clients, thus compromising the network?

  4. The extended network shows a security setting of [WPA-PSK-CCMP]-TKIP, in addition to [WPA2-PSK-CCMP]-TKIP. Whereas the original networks only have [WPA2-PSK-CCMP]-TKIP. Is this a possible vulnerability?

I do know this question is broad – but I am dealing with a very real intrusion here. I would gladly narrow down the possibilities and subsequently the question based on guidance from the community

Do more credit cards get stolen through public WiFi than through data breaches?

I was listening to a podcast the other day which was sponsored by a VPN provider. During the talking points for the advertisement, the host said something to the effect of the following (I’m recalling this from memory, but this is the gist)

Have you ever had your credit card hacked? Be wary of using public WiFi networks when purchasing something, the networks are full of hackers attempting to steal your information. In fact, the number one way that credit card details are stolen is through hackers downloading them via coffee shop wifi. With VPN Provider you can count on a safe experience…

And then goes on to tout the benefits of a VPN. However, this claim doesn’t sit right with me. Are more details stolen through public WiFi interception than, say, data breaches from major retailers? Or is this a case of “coverage bias” where large breaches get more news coverage (and therefore more recognition)?

How does one steal files by connecting to a laptop’s WIFI / Bluetooth? [on hold]

I’m asking how does one steal files by connecting to a laptop’s WIFI / Bluetooth and can it be done with the laptop powered off if there is a battery?

Could you please explain how you would connect to a laptop’s WIFI / Bluetooth and brute force the login, step by step?

I’m not asking for a hacking tutorial as misunderstood by someone, this is for educational purposes so I can understand it better. There is no existing explanation of that online.

Not able to connect to internet when both ethernet and wifi is connected in Ubuntu 16.04

I have Ubuntu 16.04 (machine 1) and Windows 10 (machine2). I have connected the ubuntu to the wifi with IP 192.168.0.110 and I can browse internet easily.

I have to do remote C++ development on ubuntu from windows using Visual studio. I have connected the Ethernet cable between ubuntu and windows. On both the side I have set the static IP i.e. ubuntu has 192.168.0.150 and windows has 192.168.0.149. I can ping windows from ubuntu and vice versa. But when I try to browse internet on Ubuntu, its not working. If I disconnect wired connection from ubuntu, I can browse the internet fine. I don’t know what I have done wrong here due to which I am not able to connect to internet on Ubuntu.

Can anyone please suggest any idea. Thanks

WiFi disables after suspending

newbie Ubuntu MATE user here.

First off, I know this is a well documented issue, i’ve tried multiple solutions from various sites and none of them worked. I’m running Ubuntu 18.04.3, and whenever i suspend my computer (close the lid), wifi disables. i can’t even get it back on using sudo service network-manager restart, so i don’t know what the problem is.

If you want me to show you more information about my computer please let me know which commands to use, i’m not very experienced with Linux. here’s my uname -a info:

Linux plex 5.0.0-31-generic #33~18.04.1-Ubuntu SMP Tue Oct 1 10:20:39 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

and my lspci info: 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Root Complex 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) I/O Memory Management Unit 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Wani [Radeon R5/R6/R7 Graphics] (rev c5) 00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Kabini HDMI/DP Audio 00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Host Bridge 00:02.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Root Port 00:02.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Root Port 00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Host Bridge 00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Root Port 00:08.0 Encryption controller: Advanced Micro Devices, Inc. [AMD] Device 1578 00:09.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 157d 00:09.2 Audio device: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Audio Controller 00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 20) 00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 49) 00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 49) 00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 4a) 00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11) 00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 0 00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 1 00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 2 00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 3 00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 4 00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 60h-6fh) Processor Function 5 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15) 02:00.0 Network controller: Qualcomm Atheros QCA6164 802.11ac Wireless Network Adapter (rev 20) 06:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 / M430 / R7 M520] (rev 83)

19.04 just installed … where is Wifi?

  1. HP Pavilion dv9700. (10-year-old laptop.)
  2. Bad video on monitor (but good video on external monitor).
  3. Wondered what would happen with Lubuntu. (Answer: good video on laptop monitor!)
  4. No Wifi.
  5. No networking, period, even with ethernet cable.
  6. I see many suggestions online, but I chose Lubuntu because reviewers said it had a good GUI. DOS was great, but I don’t have time or energy to learn the Linux command line. Sorry, my problem, just making it known from the start. But I’ll try if it’s not overwhelming.
  7. It must be a bad installation. Can’t believe everyone would find Wifi so hard to establish.
  8. My desktop has an icon named “Network.” Opening it, I see one icon named “Windows network.” Opening that I see “Failed to retrieve share list from server: no such file or directory.” Clicking OK, I see “The specified location is not mounted.”
  9. Before installing Lubuntu, the laptop was running Win 7 and Wifi worked perfectly. So the hardware is good.
  10. All ideas and suggestions welcomed. Thanks.