Modern operating systems, whether Android or Windows, have become much stricter about wireless network security settings. When you try to connect to your home router and see a "weak security" or "not secure" warning, it's not just a formality. It's a signal that the data encryption algorithm used is outdated and can be cracked by attackers in minutes.
Ignoring such a message is dangerous, as traffic on such a network is transmitted in an easily readable format. In this article, we'll examine in detail which protocols specifically cause this system response, why they are no longer considered reliable, and what specific steps you need to take to update your equipment settings.
Why does the system warn about weak network security?
The main reason for this notification is that the current encryption method doesn't comply with modern security standards. The operating system scans the handshake process parameters upon connection and detects that the router is prompting for an outdated algorithm. This is most often due to the use of protocols. WEP or TKIP, which were developed more than twenty years ago.
At the time these standards were developed, computer computing power was significantly lower, and the time required to crack a key could take months. Today, specialized software can decrypt a WEP-protected data packet in a matter of seconds. Therefore, Google Android And Microsoft Windows mark such networks with a red icon or text warning so that the user is aware of the risks.
There's also the issue of compatibility with older equipment. Some legacy devices, released 10-15 years ago, physically don't support new encryption standards. If your network includes such devices, the router may automatically switch to compatibility mode, sacrificing security for accessibility. However, in today's environment, this is an unjustifiable risk.
⚠️ Warning: Until you change the encryption type, all transmitted data (website passwords, correspondence, banking transactions) can be intercepted by any device within range, even without a connection to your network.
It's important to understand that having a Wi-Fi password doesn't guarantee security if the wrong encryption type is selected. A password only limits the number of devices that can connect, but it doesn't protect the contents of transmitted packets from analysis. This is why updating the protocol is critical.
Differences between WEP, TKIP, and AES encryption protocols
To resolve this issue, you need to understand the abbreviations your router offers in its wireless network settings. Understanding the differences between them will help you choose the best option that meets both security and compatibility requirements.
The most vulnerable is WEP (Wired Equivalent Privacy). This is a security standard that is now considered completely ineffective for data protection. Using it is equivalent to not knowing your password for a skilled hacker. Next up is TKIP (Temporal Key Integrity Protocol), which was created as a temporary replacement for WEP. It's an improvement, but it also contains known vulnerabilities and doesn't support high data transfer rates, limiting the standard's functionality. 802.11n and above.
The gold standard at the moment is AES (Advanced Encryption Standard). This algorithm is used in conjunction with the protocols WPA2 And WPA3It provides reliable encryption, doesn't slow down your internet speed, and is supported by all modern devices. The transition to this bundle is precisely WPA2/WPA3 + AES Solves the problem of warning about weak protection.
Below is a comparison table to help you quickly assess the risks of each method:
| Protocol | Year of implementation | Security level | Impact on speed |
|---|---|---|---|
| WEP | 1997 | Critically low | It doesn't affect |
| WPA (TKIP) | 2003 | Short | Limits to 54 Mbps |
| WPA2 (AES) | 2004 | High | Full support |
| WPA3 (AES) | 2018 | Maximum | Full support |
As the table shows, using anything other than AES is a compromise that no longer makes sense in 2026. Modern routers should be configured to use it by default. WPA2-PSK (AES) or WPA3-SAEIf your router only offers TKIP, it might be time to consider replacing the hardware.
How to change the encryption type in your router settings
The process of changing security settings is universal for most manufacturers, such as TP-Link, ASUS, Keenetic or MikroTikYou will need access to the administrator's web interface. To do this, open a browser on a device connected to the router and enter the gateway IP address in the address bar, usually 192.168.0.1 or 192.168.1.1.
After entering your login and password (often found on a sticker on the bottom of the device), you need to find the section responsible for the wireless network. Depending on the model, it may be called Wireless, Wi-Fi, Wireless mode or WLAN. Within this section, look for the subsection Wireless Security or Security.
- Find the "Version" item and select WPA2-PSK or WPA3-Personal.
- In the "Encryption" section, strictly select AES.
- Make sure the TKIP option is disabled or not selected in mixed mode.
- Click the "Save" or "Apply" button.
After applying the settings, the router will reboot the wireless module. All connected devices will be disconnected from the network. You will need to re-enter the password on each device, as the network security settings have changed. If your phone or laptop still says "unable to connect," try forgetting the network in the Wi-Fi settings and reconnecting.
☑️ Checklist for changing security settings
Compatibility issues with older devices
After the transition to the modern standard WPA2-AES or WPA3 You may encounter a situation where some older devices stop seeing or connecting to the network. This is typical for devices released before 2010-2012, which don't have hardware support for new encryption protocols.
In such cases, users often make the mistake of reverting to the vulnerable TKIP. This shouldn't be done. The solution is to create a guest network. Most modern routers allow you to set up a second, virtual access point with separate settings. You can set up a primary network with high security for smartphones and laptops, and create a separate SSID with strong encryption for older equipment.
⚠️ Important: A guest network with legacy encryption must be isolated from the main local network. Enable the "AP Isolation" or "Client Isolation" option to prevent devices in the guest area from accessing your files and printers.
If your router doesn't support guest networking and you need to use an older device, consider purchasing an inexpensive USB Wi-Fi adapter for your PC or using an Ethernet cable for your desktop devices. A wired connection is always more secure and stable than a wireless one, especially for older devices.
Additional measures to enhance Wi-Fi security
Changing the encryption type is a fundamental, but not the only, measure of protection. Even the strongest algorithm AES It's useless if the Wi-Fi password is "12345678" or "password." The passphrase must be complex and contain at least 12 characters, including uppercase and lowercase letters, numbers, and special characters.
Also worth paying attention to is the function WPS (Wi-Fi Protected Setup). It's designed to quickly connect devices with the push of a button, but it has critical vulnerabilities. Attackers can easily brute-force the WPS PIN and gain access to your network, even with a strong password. It's recommended to completely disable WPS in your router settings.
Why is WPS dangerous?
The WPS protocol uses an 8-digit PIN code. Trying all possible combinations is impossible, but due to a bug in the protocol implementation, the check is performed piecemeal (the first and second halves of the code are tested separately). This reduces the number of possible combinations from 100 million to a few thousand, making it possible to hack the network in a few hours with a regular laptop.
Another important setting is updating your router's firmware. Manufacturers regularly release updates that patch security holes. Visit the section System Tools or Administration and check for new software versions. Automatic updates are the best way to stay protected from new threats.
Diagnostics and quality control of protection
After making all the changes, it's a good idea to check the results. On smartphones Android The "Weak Security" message should disappear. A lock icon or the word "Secure" may appear instead. On computers with Windows 10/11 There should also be no warning signs in the network properties.
For a more in-depth check, you can use specialized Wi-Fi analyzer applications such as Wi-Fi Analyzer or FingThey will show you information about the channel, bandwidth, and, most importantly, the security protocol. If the Security column is lit, WPA2 or WPA3, then you did everything right.
Please remember that your settings may be lost when you perform a hardware reset of your router. If you plan to do this Reset devices, write down the selected security settings in advance to avoid having to set everything up again and leaving the network open, even for a short time.
Why does my phone say "incorrect password" after changing the settings?
If you change the encryption type or the password itself, your device may attempt to connect using the saved old data. Go to your phone's Wi-Fi settings, find your network, select "Forget network" or "Delete," and then reconnect using the current password.
Does changing encryption affect internet speed?
Yes, positively. Switching from TKIP to AES removes artificial speed limitations. TKIP doesn't allow speeds above 54 Mbps (the 802.11g standard). Using AES, the router can utilize the full potential of the 802.11n, ac, and ax standards.
Is it possible to crack WPA2-AES?
Theoretically possible, but in practice, it requires enormous computing power and time, measured in years if the password is sufficiently complex. For consumer use, WPA2-AES is considered an absolutely secure standard.