A Decrease in Wi-Fi Speed
The most obvious sign that someone outside your trusted circle is using up your Wi-Fi resources is when the speed of the Internet suddenly drops for no apparent reason. Your videos might be taking longer to buffer. Websites might be taking longer to load, and online games might be having difficulty operating.
If you feel your net speed has decreased, or your data packet is being used up much more quickly than usual, it might be because someone else has hacked into the network and is using your Internet.
Changed Settings
Most hackers operate by sneaking into the network system and changing the settings to facilitate the hack. Check for signs such as:
The passwords having been changed. The signal frequency is modified. Your screen cursor starts moving on its own.
Presence of Unknown Devices
As the network administrator, you should have access to the logs which indicate which particular devices are currently connected to the network. If you are not the administrator, find out who has that authority, and ask them to check the logs. If you find that there are devices connected to the system which are unaccounted for, it could very well be a hacker who has managed to gain access to the network.
Antivirus Is Disabled
One of the first moves of a hacker who has gained access to a network is to find a way to disable the firewalls and other antivirus programs designed to keep malware out of computers. If you find that your firewall has been disabled without your knowledge, it could be the work of a hacker who has managed to invade your network.
Strange Messages
Once the hacker has gained access to your network, the next step is to actually cause harm to the connected devices. You might start receiving strange messages which carry virus-infected files. These files are often shared on closed networks by a computer which is controlled by the hacker so you think it would be safe to open.
If you have the least suspicion about a message you received asking you to open an unknown file or program, even if it appears to have come from a nearby computer, take the time to check with your colleagues to find out who sent the file and confirm that they know the file can be safely opened.
New Programs on Your PC
Finally, the biggest sign of a breach in security is the appearance of strange and unknown programs on your computer. These programs have been planted on your computer by the hacker and can do all kinds of damage, from leaking your personal information online to allowing the hacker to take over your device and use it to perform illegal activities. If you notice a strange program on your PC that you don’t remember installing, do not open it under any circumstances. Find out as much information about the program online as you can, and have your antivirus program scan the files to determine if they pose a threat.
Conclusion
Once you have determined that your network is under attack, it is time to take corrective steps. Disconnect your own device and others from the network immediately to stop the hacker from spreading through every PC. Then call in an Internet security expert to examine the network to determine the full extent of the infection and advise you on the steps that need to be taken to rid the network of the hacker and fortify the network defenses against similar attacks in the future. Image Credit: T-Mobile MyTouch (rooted) WiFi Speed Test
