Blocking remote access to a computer from the network. Remote access. Another loophole - remote Windows registry

Android lock may be required if your smartphone is lost or stolen. This tool allows you to erase all user data from a mobile device, as well as to limit its functionality for some time, making further control of the device impossible. You can activate remote control of the phone using both the capabilities built into the operating system and through special programs. Let's take a look at how to block Android if it is stolen or lost.

Locking a smartphone through the standard Android menu

Starting with Android 5.0, you can block a mobile device via the Internet using the integrated Android Remote Control function. For earlier assemblies, you will need to download the app of the same name from the Play Market.

Remote blocking of the phone is carried out through the Google service. To successfully complete this procedure, three conditions must be met:

1. The stolen or lost gadget must be connected to the Internet. It doesn't matter what type of connection is used - mobile or Wi-Fi.
2. The smartphone must be linked to a Google account.
3. The corresponding function must be running on the machine.

If everything is clear with the first point, then certain difficulties may arise with the rest. Therefore, they should be discussed in more detail.

In order for the owner of the smartphone to be able to block it remotely, you first need to pair the device with the Google virtual service. This is done as follows:

After completing the binding, you must enter the "Google Settings" application and open the "Security" tab. Then click on the "Device Administrators" item, put a checkmark in front of the corresponding items and start remote control by clicking "Activate".

Having set up the remote control function on the phone, in case of theft or loss of the device, you can perform a number of actions with it: change the password, reset the settings to the factory settings, or make a lock. This requires:

This service also provides an opportunity to write a message and set a phone number. Now, if someone finds your gadget, relevant information will be displayed on its screen, which can be used to find the owner of the mobile device.

Smartphone lock via additional software

If your device does not have a built-in remote control function, you can block your mobile device on Android using special software. You can find it on the Play Market without any problems. One such program is Android Lost, which can be downloaded from Google Play for free.

To reveal all the features of this application, you will need Root rights. To get them, use the Framaroot utility:

After obtaining Superuser rights, you will need to activate the remote blocking feature. For this you need:

Now, if you lose your smartphone, you will need to do the following:

Now the locked device will require a PIN code when turned on.

It's pretty frustrating when someone gets unauthorized access to your computer. If you think your computer has been jailbroken, disconnect it from the internet. Then, look for the vulnerabilities that the attacker exploited to break into the system and fix them. Then take steps to avoid similar intrusions in the future.

Steps

Part 1

Be aware that your computer may turn on automatically to install updates. Most of the latest versions of operating systems are automatically updated; as a rule, this happens at night, when no one is using the computer. If the computer turns on without your knowledge (that is, when you are not using it), most likely it woke up from sleep mode to install updates.

• An attacker could gain remote access to your computer, but this is unlikely. But there are some steps you can take to prevent the invasion attempt itself.

1. Look for obvious signs of remote access. If the cursor moves, programs are launched and files are deleted without your participation, someone has gained access to the computer. If this happens, turn off your computer and disconnect the Ethernet cable.

   • If you find unfamiliar programs or your internet connection speed has dropped, this does not mean that your computer has been jailbroken.
   • Many programs that update automatically open pop-up windows during the update process.

2. Disconnect your computer from the internet. Do this if you think your computer has been jailbroken. Disconnect your computer not only from the Internet, but also from the local network to prevent unauthorized access to other computers.

   • Turn off your wireless router and disconnect the Ethernet cable from your computer.

3. Start Task Manager or System Monitor. Using these utilities, you can identify active processes.

   • On Windows, press Ctrl + ⇧ Shift + Esc.
   • On Mac OS, open the Applications - Utilities folder and click System Monitor.

4. In the list of running programs, find programs for remote access. Also look for any unfamiliar or suspicious programs in this list. The following programs are popular remote access programs that are installed without the user's knowledge.

   • VNC, RealVNC, TightVNC, UltraVNC, LogMeIn, GoToMyPC, and TeamViewer
   • Also look for unfamiliar or suspicious programs. If you do not know the purpose of this or that active process, find information about it on the Internet.

5. Note the abnormally high CPU utilization. It appears in the Task Manager or System Monitor. High processor utilization is normal and does not indicate a compromised computer, but if it occurs when no one is using the computer, most likely many processes are running in the background, which is very suspicious. Keep in mind that high CPU utilization occurs during background system updates or large file downloads (which you forgot about).

   Scan the system with an antivirus program. Be sure to install antivirus or leave Windows Defender on. Open your antivirus software and run an operating system scan. A full scan will take about an hour.

   • If your computer does not have antivirus, download it on another computer and copy it to your computer using a USB drive. Install antivirus and scan your system.

6. Delete the files found by the antivirus. If the antivirus detects malicious programs, remove them or send them to "quarantine" (this depends on the antivirus); in this case, the found programs will no longer harm the computer.

   Download and install Malwarebytes Anti-Malware. This is a program that detects and neutralizes malicious programs not found by the antivirus. Malwarebytes Anti-Malware is a free download from malwarebytes.org.

   • Since your computer is disconnected from the internet, download Malwarebytes Anti-Malware on another computer and copy it to your computer using a USB stick.

7. Scan the system with Anti-Malware. A full scan will take about 30 minutes. It is possible that Anti-Malware will detect a cracker that controls your computer.

   Quarantine the detected malware. In this case, the found programs will no longer harm your computer.

   Download and run Malwarebytes Anti-Rootkit Beta. This program can be downloaded free of charge from malwarebytes.org/antirootkit/. Anti-Rootkit Beta detects and removes rootkits, which are malicious programs that allow an attacker to gain a foothold in the system and hide traces of infiltration. A full system scan will take some time.

   Monitor your computer's behavior after removing malware. Even if antivirus and / or Anti-Malware program has found and removed malware, monitor your computer's behavior to determine if there is any hidden malware.

   Change all passwords. If your computer is compromised, it is most likely that the attacker obtained your passwords using a keylogger. In this case, change the passwords for different accounts. Do not use the same password for multiple accounts.

   Sign out of all accounts. Do this after changing your passwords. Sign out of accounts on all devices on which you use these accounts. In this case, the attacker will not be able to use the old passwords.

   Reinstall your operating system if you are unable to block unauthorized access to your computer. This is the only reliable way to prevent intrusion and get rid of all malicious files. Please back up important data before reinstalling the system, as reinstalling the system will delete all information.

   • When backing up your data, scan each file, because there is a risk that old files will lead to infection of the reinstalled system.
   • Read on for more information on how to reinstall Windows or Mac OS.

   Part 2

   Preventing unauthorized access

   1. Configure automatic updates for your antivirus software. Modern antivirus detects malware before it gets on your computer. Windows comes with Windows Defender, which is a pretty good antivirus that runs and updates in the background. You can also download an excellent and free antivirus such as BitDefender, Avast! or AVG. Remember that only one anti-virus program can be installed on a computer.

      • Read on for more information on how to enable Windows Defender.
      • Read on for more information on how to install your antivirus software (in which case Windows Defender will turn off automatically).

   2. Configure your firewall. Unless you own the server or run a remote access program, there is no need to keep ports open. Most programs that need open ports use UPnP, which means that ports are opened and closed as needed. Permanently open ports are the main vulnerability of the system.

      • Read and then check if all ports are closed (unless you own the server).

   3. Be careful with email attachments. They are the most popular way of spreading viruses and malware. Open attachments to letters from people you know, and even in this case, it is better to contact the sender and clarify whether he sent any attachments. If the sender's computer is infected, malware will be sent out without his knowledge.

      Set strong passwords. Every secure account or program must have a unique and strong password. In this case, an attacker will not be able to use the password for one account to hack into another. Find information on the internet on how to use a password manager.

   4. Don't use free wireless networks. Such networks are insecure because you cannot know if someone is monitoring your inbound and outbound traffic. By monitoring traffic, an attacker can gain access to the browser or more important processes. To keep your system safe while connected to the free wireless network, use a VPN service that encrypts traffic.

      • Read

Access to the computer, in order to protect against attacks from the outside, installs third-party programs, not even suspecting that the bulk of all hacks are due to the standard Windows settings. The operating system allows remote connections to the computer by default. In an effort to make the user experience easier, the Windows developers have included remote configuration and assistance capabilities in the system. Such help is suitable only for large corporations that have a system administrator who can fix computer problems in seconds while in another location. For home users, remote access can only make it easier for attackers to hack into someone else's system.

How to get to the remote access setup menu?

In just a few minutes, any user can independently remove remote access to a computer.

1. For users working under an administrator account, follow these steps in sequence - "Start", select "Control Panel". In the window that appears, select "System".
2. For users who work under a different account or do not have account information, you need to open the "System" window with administrator rights. Press the button "Start", "All Programs", "Standard". After finding "Explorer" in the list, run "with administrator rights". To do this, while holding down the Shift key on the keyboard with one finger, right-click on the File Explorer icon. If the user works with the mouse with his left hand, it means that you need to press the left mouse button. In the list that appears, select the "Run as administrator" field. In the window that opens, on the left panel, find and click on "+" to open "Control Panel", then "All Controls" and select "System".

Disable remote access in the system menu

Once in the management of the system, before accessing the computer, you need to find the appropriate section. On the left side of the panel, click "System Protection". At the top, select "Remote Access". In the "Remote Assistance" section, uncheck the box next to "Allow the connection". In the "Remote Desktop" menu, check the box next to "Do not allow connections." Click "OK" and close all system windows. Restart your computer via the Start menu. After rebooting, you need to check if the changes are saved in the system. To do this, you need to re-enter the system properties and make sure that remote connections are not active. If nothing has changed, you need to carefully study the instructions on how to disable remote access, paying attention to obtaining system administrator rights.

The pitfalls of virtual private networks

All Windows users should make sure that the computer is not included in VPNs, except for situations when the provider provides Internet services only through the virtual network, which is reported upon connection. You must open the "Control Panel" with administrator rights and select "Network Control Center". Select "Change adapter settings". Before removing remote access and virtual private networks in Windows 7, you need to find out which connection is used to operate the Internet, otherwise you can cut off your access. If there is more than one connection in the list, it is better to disconnect first, select the Disconnect menu before deleting. If the disconnection did not affect the work of the Internet, you can delete the icon.

Another loophole - remote Windows registry

Questions related to access to a computer are closed by a banal shutdown, but few people remember about the remote registry. But if you think about it, having connected remotely to the registry, you can write in it any commands that, when the system is restarted, will not only re-enable the assistant, but also cause additional damage to the computer. With administrator rights in the control panel, select the "Administrative Tools" - "Computer Management" menu. In the left pane of the snap-in that opens, select "Services and Applications" and start "Services". Find "Remote Registry" in the list of services and right-click on the labels. Select properties. In the "Startup type" field, select "Disabled". Save and restart the computer through the "Start" button.

Disable remote access using the command line

Users familiar with the powerful tool "Windows Command Prompt" will definitely be interested in how to remove remote access to a computer without unnecessary transitions between windows of the operating system. There are two ways: you can enter commands yourself or using an executable file with the .bat extension.

It is recommended to write pause in the executable file after each command, since without terminating the work with one service, the command is passed to another service, which can cause an error in the system with a denial of execution. If, after disabling the necessary services, you do not want to restart the computer, you can immediately stop the services from the command line.

Connected remote access to your computer gives other people the ability to control your computer, which means the safety and security of data on it is in question. Today, we will take a closer look at the question of how to disable remote access to a computer, and what steps must be taken to do this, using the example of Windows7 OS.

Often, a person who is not versed in technology gives his computer to a specialist for setting up or removing problems. Often, such specialists turn out to be unscrupulous, in addition to troubleshooting and receiving remuneration for their work, they leave connected remote access to the computer. This allows them to freely use any data, files stored on your computer.

Steps to Disable Remote Access

1. First of all, click on the menu "Start", and right-click on the tab "A computer", then in the drop-down menu, select the item "Properties" as shown in the picture below. This will allow you to get into the section "System properties".

Also, you can get to this section through "My computer" by clicking on the tab "System properties" in the top horizontal menu (see the picture below).

2. Once in the section "System properties", click on the item "Setting up remote access", which is located in the upper left corner of the screen.

3. Next, a window will open with the ability to disable remote access. From the proposed options, put a circle on the paragraph "Do not allow connections to this computer", and press "OK", thereby blocking access to the computer.

Now let's talk about disabling remote assistance, with which you can invite someone to connect to your computer.

You can read more about Remote Assistance by following the link located in the same window.

To disable remote assistance, just uncheck the corresponding item and click "OK" as shown in the picture below.

A computer is not only useful, but also a very vulnerable thing. Dangers await him at every step. A virus is not only a human disease, but also a computer. Nobody can guarantee the safety of your mobile device, viruses are a greedy thing, they will wait for you at every corner: on disks with games or programs, on vast Internet sites. We live in a world where almost everyone is immersed in the virtual world, the world of the Internet. Fraudsters often steal our electronic data in order to use it later for bad purposes. But the matter can go even further. Your personal data can be stolen from the computer itself. To prevent this, you need to close access to your computer. How to block access to your computer?

How to block access to your computer?

The Remote Access feature is available in all versions of Windows. It allows you to connect to a PC (if you have user permissions) on behalf of the administrator (full control of the system). But it is better not to set or deactivate the remote control function, since these can be used by hackers. In all Windows it is on by default, in order to secure our computer, we must turn it off.

How to block access to your computer from others on a LAN?

Deactivation of the "Remote Access" function. The way to disable it differs for different versions of Windows. For Windows XP, go to the "Remote Sessions" tab (Start -> My Computer -> Properties -> System Properties -> Remote Sessions), uncheck "Allow remote access to this computer" and "Allow sending invitations to remote assistance". To close access to your computer in Windows 7 and Vista, press the "Win" + "Pause / Break" key combination, in the window that opens, click the "Remote access settings" link. Uncheck the boxes next to "Allow access to this computer" and check the box "Do not allow connection to this computer"