Security issues caused by the WebRTC feature in Chrome browser

What is WebRTC?

Web Real-Time Communication (WebRTC) is a collection of communications protocols and APIs originally developed by Google that enables real-time voice and video communication over peer-to-peer connections.

WebRTC is a set of protocols and APIs that allow web browsers to request real-time information from the browsers of other users, enabling real-time peer-to-peer and group communication including voice, video, chat, file transfer, and screen sharing.

WebRTC implements STUN (Session Traversal Utilities for Nat), a protocol that allows the discovery of your externally assigned IP address as well as your local IP address also.

 

How secure is WebRTC?

WebRTC works from browser to browser, you don’t need to download any software or plugins in order to set up a video conference or VOIP call. All the security that you need is already contained within your browser and the WebRTC platform. Some of the inbuilt security features contained within the WebRTC platform include:

  • End-to-end encryption between peers
  • Datagram Transport Layer Security (DTLS)
  • Secure Real-Time Protocol (SRTP)

End-to-End Encryption

Encryption is built into WebRTC as a permanent feature and addresses all security concerns effectively. Regardless of what server or compatible browser you’re using, private peer-to-peer communication is safe thanks to WebRTC’s advanced end-to-end encryption features.

Data Transport Layer Security (DTLS)

Any data that is transferred through a WebRTC system is encrypted using the Datagram Transport Layer Security method. This encryption is already built-in to compatible web browsers (Firefox, Chrome, Opera) so that eavesdropping or data manipulation can’t happen.

Secure Real-Time Protocol (SRTP)

In addition to offering DTLS encryption, WebRTC also encrypts data through Secure Real-Time Protocol, which safeguards IP communications from hackers, so that your video and audio data is kept private.

Camera and Microphone Security

Unlike some other video and audio conferencing software, WebRTC requires the user to enable access to their microphone and camera before communications begin. Typically, a pop-up box will appear in your web browser, asking you to allow the program access. The image below shows what a webcam and microphone permission pop-up might look like on a chrome browser.

Security issue caused by the WebRTC feature in Chrome

It is well known that the WebRTC feature in Chrome will leak your IP address even if you are behind a proxy server or using a VPN service. While most people who do not use proxy or VPN reveals their IP addresses to whatever web server they visit all the time, the IP address is the most easily accessible piece of information to track a website visitor.

For the minimum, big companies such as Google and Facebook are using the IP addresses to analyzing your habits and behavior and send your highly-targeted ads. While most people are fine with targeted ads, there are people who don’t like to be tracked at all for whatever reason. They will choose to use either proxy or VPN service to avoid being tracked. However, in a browser which supports WebRTC, including Chrome, Slimjet, and Firefox, the website owner can easily obtain the website visitor’s/user’s true IP addresses, but also their local network address too, by a simple piece of JavaScript.

In addition to that, the WebRTC Media Device Enumeration API also enables the website owner to obtain a unique media device id from the user, which can be used to uniquely identify the visitor.

How to verify the IP leakage issue caused by WebRTC?

Here are three websites which can let you detect if your browser is liable to the IP leakage issue caused by WebRTC:

How to prevent the IP leakage caused by WebRTC?

WebRTC Control: http://bit.ly/29aqJnt

Test it: https://www.browserleaks.com/webrtc

Chrome Flaw Allows Sites to Secretly Record Audio/Video Without Indication

What if your laptop is listening to everything that is being said during your phone calls or other people near your laptop and even recording video of your surrounding without your knowledge?

A UX design flaw in the Google’s Chrome browser could allow malicious websites to record audio or video without alerting the user or giving any visual indication that the user is being spied on.

AOL developer Ran Bar-Zik reported the vulnerability to Google on April 10, 2017, but the tech giant declined to consider this vulnerability a valid security issue, which means that there is no official patch on the way.

Here’s the lowdown. Once you give a site permission to use your microphone or camera, Chrome assumes that site will have permission to do so in the future. That means every instance of that site, every page on that site, also has access to your camera and microphone, meaning a sketchy site owner could throw up a pop-under window in the background that’s listening in to everything you say, or worse, listening and set to trigger some action (like recording) when you say specific words or phrases.

After reporting it to Google, For their part, Google doesn’t see it as a problem and says it’s in compliance with W3C (the World Wide Web Consortium) standards. Google does have a point: In order for the issue to be a real threat, not only do you have to visit a site that would want to record your speech, you’d have to grant it access to your microphone, and then you’d have to not notice a pop-under window from that site lingering in the background.

Google consider this a security vulnerability or not, but the bug is surely a privacy issue, which could be exploited by hackers to potentially launch more sophisticated attacks.

In order to stay on the safer side, simply disable WebRTC which can be done easily if you don’t need it. But if you require the feature, allow only trusted websites to use WebRTC and look for any other windows that it may spawn afterward on top of that.

Following such privacy concerns, even Facebook CEO Mark Zuckerberg and former FBI director James Comey admitted that they put tape on their laptops just to be on the safer side.

Although putting a tape over your webcam would not stop hackers or government spying agencies from recording your voice, at least, it would prevent them from watching or capturing your live visual feeds.

If you want to block your camera and Microphone, follow the steps given below:

To improve your Chrome security settings, go to the Settings area, which can be accessed in the top right corner of the browser.

WebRTC-1 Click on Settings –> Advanced Settings –> Content Settings –> Block Camera and Microphone

or  type in the Chrome browser chrome://settings/content –> Block Camera and Microphone.

What Is My Browser – Displays fingerprinting information such as the local and remote IP address, browser, plugins, location, screen resolution and more.

http://ip-check.info/?lang=en << JonDonym

Happy and Safe browsing 🙂

Source: ghacksthehackernewsslimjettwilio,  heimdalsecurity

 

What is that popup on Windows 10 that disappears after a split second?

If you run Windows 10, you may have noticed a popup window being launched on the screen once a day, or even regularly.

It is spawned and immediately closed again. This makes it difficult to understand what spawns it, why it is launched, and whether it is something that you need to be concerned about.

One of the issues of this is that you may be thrown out of full-screen applications when that happens. Several users of Windows 10 reported that they get the window every hour or so and that it makes playing games a nightmare because of that.

The file that gets executed every hour or so is called officebackgroundtaskhandler.exe, and you can find it under

C:\Program Files (x86)\Microsoft Office\root\Office16\officebackgroundtaskhandler.exe

If you check the log on your system, for instance, you may notice that this is the case on your Windows 10 device.

officebackgroundtaskhandler

This issue has been a hot topic since April 15th when a user reported it on Microsoft’s official Answer forum.

Is there a really, really good reason that the “OfficeBackgroundTaskHandlerRegistration” task (see it in Task Scheduler, Microsoft, Office) must run every hour?  This is what it says that it does: “This task initiates Office Background Task Handler, which updates relevant Office data.”

 I ask because it runs officebackgroundtaskhandler.exe in such a way that it flashes a window (itself) on the screen. Only instantaneously to be sure, but it’s noticeable, especially once you catch onto what’s happening. You can run the task manually if you want to see it without waiting.

 Why doesn’t the task use one of the many tricks to hide a window from displaying? 

If Microsoft Office runs on the Windows 10 machine, two tasks are scheduled to run OfficeBackgroundTaskHandler. They are:

  • OfficeBackgroundTaskHandlerLogon which runs when the user logs on to the system.
  • OfficeBackgroundTaskHandlerRegistration which runs every hour.

 Solutions:

The task window should not be launched when the task is run, and there are plenty of ways that Microsoft could have picked to hide the task window instead of spawning it every hour on the user system.

The two main options that you have been to disable the task, or to switch it from running under User to System.

1.     Disabling the Task

office task

It is unclear what the task does, and you should monitor Office closely after disabling it to make sure everything works as intended. The task is still run on login though.

  1. Tap on the Windows-key, type Task Scheduler, and hit the Enter-key.
  2. Go to Task Scheduler > Task Scheduler Library –> Microsoft > Office
  3. Locate the task OfficeBackgroundTaskHandlerRegistration.
  4. Right-click on the task, and select the disable option.

2.     Run under System account

The second option that you have is to change the user group the task runs under. Switching it to System reportedly hides the popup window from spawning.

office task2

  1. Tap on the Windows-key, type Task Scheduler, and hit the Enter-key.
  2. Go to Task Scheduler > Task Scheduler Library > Microsoft > Office
  3. Right-click on OfficeBackgroundTaskHandlerRegistration and select Properties.
  4. Select “Change User or Group”.
  5. Type system.

Click ok.

Or Wait for some time, Microsoft is going to release the patch build 16.0.8201.2025. As of now this patch released for those participating in the Office Insiders Slow program. It will be included in a future update for those not participating in Insiders.

How to install Office updates manually?

Check the link given below:

https://support.office.com/en-us/article/Install-Office-updates-2ab296f3-7f03-43a2-8e50-46de917611c5

Source: ghacks, Microsoft, MS Office

Stop using the insecure SMBv1/SMB1 protocol

The recent WannaCry ransomware outbreak spread because of a vulnerability in one of the internet’s most ancient networking protocols, Server Message Block version 1 (aka SMBv1 / SMB 1).

Barry Feigenbaum originally designed SMB at IBM. Microsoft has made considerable modifications to the most commonly used version. Microsoft merged the SMB protocol with the LAN Manager product.

The original SMB1 protocol is nearly 30 years old, and like much of the software made in the 80’s, it was designed for the world that no longer exists. The world without malicious actors, without vast sets of important data, without near-universal computer usage. Frankly, its naivete is staggering when viewed through modern eyes.

The Server Message Block, or SMB, protocol is a file sharing protocol that allows operating systems and applications to read and write data to a system. It also allows a system to request services from a server.

This is the protocol mainly used for providing shared access to files, printers, and serial ports and miscellaneous communications between nodes on a network.

In computer networkingServer Message Block (SMB), one version of which was also known as Common Internet File System (CIFS) operates as an application-layer network protocol.

There have been numerous vulnerabilities tied to the use of Windows SMB v1, including remote code execution and denial-of-service exploits. These two vulnerabilities can leave a system crippled, or allow attackers to compromise a system using this vulnerable protocol.

Protocol Version Windows OS
SMB 1 Windows 2000, Windows 2003, Windows XP
SMB 2 Windows Server 2008 and Windows Vista SP1
SMB 2.1 Windows Server 2008 R2 and Windows 7
SMB 3.0 Windows Server 2012 and Windows 8
SMB 3.0.2 Windows Server 2012 R2 and Windows 8.1
SMB 3.1.1 Windows Server 2016 and Windows 10

SMB 1 protocol permits man-in-the-middle exploits and it “isn’t safe” to use. An attacker can use SMB 2 to pull information from the insecure SMB 1 protocol if it exists in a network.

The nasty bit is that no matter how you secure all these things if 
your clients use SMB1, then a man-in-the-middle can tell your client
to ignore all the above. All they need to do is block SMB2+ on 
themselves and answer to your server's name or IP.Your client will 
happily derp away on SMB1 and share all its darkest secrets unless
you required encryption on that share to prevent SMB1 in the first 
place. This is not theoretical-- we've seen it.

                 ~ Ned Pyle, a Principal Program Manager, Microsoft

 

How to remove SMB V1 /SMB 1 in Windows OS?

Windows 8.1 and Windows 10:

Method-1: Open Control Panel (just start typing Control in the search box to find its shortcut quickly). Click Programs, and then click Turn Windows features on or off (under the Programs heading). Or

Start –> Run –> Type appwiz.cpl –> press enter –> Click Turn Windows features on or off

Clear the check box for SMB 1.0/CIFS File Sharing Support, as shown here. That’s it; you’re protected.

SMB1

Method-2:  open a Windows PowerShell prompt with administrative privileges. In the Windows 10 Creators Update, version 1703, right-click the Start button and choose Windows PowerShell (Admin) from the Quick Link menu.) If you’re running an earlier Windows 10 version, enter Windows PowerShell in the search box, then right-click the Windows PowerShell shortcut and click Run as administrator. From that elevated PowerShell prompt, type the following command:

Disable-WindowsOptionalFeature -Online -FeatureName smb1protocol

Press Enter and you’re done.

Note You must restart the computer after you make these changes.

Windows 2012 R2, and Windows Server 2016:

Method-1: Launch Server Manager from Command Line.

Press the Windows key + R to open the Run box, or open the Command Prompt. Type ServerManager and press Enter.

Run

Or Launch Server Manager from Taskbar

Task bar

On Server, the Server Manager approach:

image495

Method-2: On Server, the PowerShell approach (Remove-WindowsFeature FS-SMB1):

Remove-WindowsFeature Name FS-SMB1

image496

On legacy operating systems:

When using operating systems older than Windows 8.1 and Windows Server 2012 R2, you can’t remove SMB1 – but you can disable it.

Windows 8 and Windows Server 2012:

Windows 8 and Windows Server 2012 introduce the new Set-SMBServerConfiguration Windows PowerShell cmdlet. The cmdlet enables you to enable or disable the SMBv1, SMBv2, and SMBv3 protocols on the server component. (A cmdlet is a lightweight command that is used in the Windows PowerShell environment.)

  • To disable SMBv1 on the SMB server, run the following cmdlet:

Set-SmbServerConfiguration -EnableSMB1Protocol $false

  •  To enable SMBv1 on the SMB server, run the following cmdlet:

Set-SmbServerConfiguration -EnableSMB1Protocol $true

 Windows Server 2008 R2 and Windows Server 2008:

To enable or disable SMB protocols on an SMB Server that is running Windows 7, Windows Server 2008 R2, Windows Vista, or Windows Server 2008, use Windows PowerShell or Registry Editor.

Windows PowerShell 2.0 or a later version of PowerShell

  • To disable SMBv1 on the SMB server, run the following cmdlet:

Set-ItemProperty -Path “HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters” SMB1 -Type DWORD -Value 0 -Force

  • To enable SMBv1 on the SMB server, run the following cmdlet:

Set-ItemProperty -Path “HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters” SMB1 -Type DWORD -Value 1 -Force

 Note You must restart the computer after you make these changes.

Registry Editor:

Important

This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to backup, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:  322756 How to backup and restore the registry in Windows

To enable or disable SMBv1 on the SMB server, configure the following registry key:

Registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\ParametersRegistry entry: SMB1
REG_DWORD: 0 = Disabled
REG_DWORD: 1 = Enabled
Default: 1 = Enabled

Windows Vista, Windows 7, and Windows 8:

  • To disable SMBv1 on the SMB client, run the following commands:

sc.exe config lanmanworkstation depend= bowser/mrxsmb20/nsi
sc.exe config mrxsmb10 start= disabled

  • To enable SMBv1 on the SMB client, run the following commands:

sc.exe config lanmanworkstation depend= bowser/mrxsmb10/mrxsmb20/nsi
sc.exe config mrxsmb10 start= auto

Source: Microsoftzdnettechnet.microsoftredmondmagtop-password, techtargetwindowsitpro

Free Network Diagram Tools

At some point, every administrator will need to diagram a network. For some, it’s their primary duty — and they tend to rely on powerful, expensive tools like Microsoft Visio. But for those who need to use a diagramming tool only occasionally, a cheaper solution is best.

Below are the best free best tools to use in Small business centers and for occasional users.

These tools could be used to create diagrams, network diagrams, flowcharts, schemas, maps and so much more. You can use predefined blocks, primitive shapes, raster, and vector images.

1. LibreOffice Draw: 

Draw is part of the LibreOffice suite, an open-source alternative to Microsoft Office. Side-by-side, Draw is similar to Visio in terms of functionality—offering the ability to create basic or complex diagrams, anything from flowcharts and organizational charts to network diagrams and 3D sketches.

LibreOffice Draw runs on Windows, Linux, and Mac OS X.

Tip: LibreOffice Portable lets you run any of the tools from a USB, local hard drive, or the cloud.

To get started, you will need to download and apply a network topology icons pack, available in the form of an extension. A couple of popular ones are VRT Network Equipment and Cisco Network Topology Icons

Network Diagram

To apply for the VRT Network Equipment icons, go to Tools > Extension Manager > Add > choose the extension file you downloaded and it will be added automatically to your extension list.

Alternatively, if you have your own icons or images you wish to use in your diagram, you can add them to your gallery. Open the Gallery by clicking on the icon on the right-hand side, or going to Insert > Media > Clipart Gallery. Here, you can create a New Theme folder and add your images or icons to that folder.

To add Cisco Network Topology Icons, download PMS 3015: EPS (14 MB) from the Cisco website.  To apply for the Cisco network icons, please do it as per the explanation is given below video.

For portable version : https://www.libreoffice.org/download/portable-versions/

 

2. CADE:

CADE is a compact but powerful 2D vector editor for Windows. It includes basic Visio functionality and could be used to create diagrams, network diagrams, flowcharts, schemas, maps and so much more.

Free sample diagrams are available to help you get started.

CADE is available for free download.

3. Draw.io:

Draw.io is a free, cloud-based, online diagramming software solution that allows you to create basic network diagrams from a user-friendly interface. You can save directly to Google Drive, Dropbox, OneDrive, or your own device and export the finished product in PNG, SVG, HTML, PDF, or XML format.

Click More Shapes, on the bottom left-hand side, to choose more shapes from pre-defined categories. The Scratchpad allows you to add your own images by dragging and dropping, importing from a file, or specifying an image URL.

4. Dia:

Dia is an open source, GTK+ diagramming tool that has a shallow learning curve and can help you create basic network diagrams. Like CADE, Dia was inspired by Visio — but with a much more casual approach and feel. Dia loads and saves XML-formatted documents that are gziped by default to save space. Dia is also available for Linux, Mac, and Windows.

5. yED:

yEd is freely available and runs on all major platforms: windows, Unix/Linux, and Mac OS X.  It has a great user interface and features diagram creation, auto-layout, data import (GraphML, Excel XLS, GEDCOM, GML, XML), and data export (PDF, SWF, JPG, GIF, BMP, and HTML image maps). The auto-layout feature is particularly cool. It uses a wide range of sophisticated layout algorithms to automatically arrange your diagrams, saving you time and effort.

6. Diagram Designer:

Diagram Designer is another freeware tool that suffers (like Dia) from looking a bit on the outdated side. But Diagram Designer’s ease of use should certainly make up for the old-school feel of the application. DD features include customizable template objects, a spell checker, import/export (WMF, EMF, BMP, JPEG, PNG, MNG, ICO, GIF, and PCX), a slideshow viewer, a graph plotter, a calculator, MeeSoft Image Analyzer integration, and compressed file format.

Source: neweggbusiness, solarwindsmsptechrepublic

WannaCry Ransomware

A massive ransomware campaign hit computer systems of hundreds of private companies and public organizations across the globe – which is believed to be the most massive ransomware delivery campaign to date.
The Ransomware in question has been identified as a variant of ransomware known as WannaCry (also known as ‘Wana Decrypt0r,’ ‘WannaCryptor’ or ‘WCRY’).

WannaCry1

What is WannaCry?

Generally, WannaCry comes in two parts. First, it’s an exploit whose purposes are infection and propagation. The second part is an encryptor that is downloaded to a computer after it has been infected.

The first part is the main difference between WannaCry and the majority of encryptors. To infect a computer with a common encryptor, a user has to make a mistake, for example by clicking a suspicious link, allowing Word to run a malicious macro, or downloading a suspicious attachment from an e-mail message. A system can be infected with WannaCry without the user doing anything.

WannaCry-infection-flow02The vulnerability used in this attack (code named EternalBlue) was among those leaked by the Shadow Brokers group. The vulnerability was exploited to drop a file on the vulnerable system, which would then be executed as a service. This would then drop the actual ransomware file onto the affected system, encrypting files with the .WNCRY extension. (A separate component file for displaying the ransom note would also be dropped.) Files with a total of 176 extensions, including those commonly used by Microsoft Office, databases, file archives, multimedia files, and various programming languages.

PropagationIf WannaCry/Wcry entered an organization’s network, it could spread within it very rapidly. Any machine or network that has exposed port 445 to the internet is at risk as well. EternalBlue exploit works over the Internet without requiring any user interaction.

How widespread is the damage?

The attack has been found in 150 countries, affecting 200,000 computers, according to Europol, the European law enforcement agency. FedEx, Nissan, and the United Kingdom’s National Health Service were among the victims.

What is the killswitch?

The worm-spreading part of the WannaCry – which is designed to infect other computers — has a special check at the beginning. It tries to connect to a hardcoded website on the Internet and if the connection FAILS, it continues with the attack. If the connection WORKS, it exits. Thus, by registering this domain and pointing it to a sinkhole server, a researcher from the U.K. successfully slowed the spread of the worm.

wannacry_cyberexpert_ap
British IT expert Marcus Hutchins who has been branded a hero for slowing down the WannaCry global cyber-attack sits in front of his workstation during an interview in Ilfracombe, England, Monday, May 15, 2017. ( Image source: AP)

On the one hand, it does stop further spread of the infection. However, only if the worm is able to connect to the Internet. Many corporate networks have firewalls blocking internet connections unless a proxy is used. For these, the worm will continue to spread in the local network. On the other hand, there is nothing stopping the attackers from releasing a new variant that does not implement a killswitch.

Killswitch Domain

The second domain was sinkholed by Matt Suiche of Comae Technologies, who reported stopping about 10,000 infections from spreading further:

We should thank below given people for saving millions of computers from getting hacked:

  • MalwareTech— very skilled 22-years-old malware hunter (Marcus Hutchins) who first discovered that here’s a kill-switch, which if used could stop ongoing ransomware attack.
  • Matthieu Suiche— security researcher who discovered the second kill-switch domain in a WannaCry variant and prevent nearly 10,000 computers from getting hacked.
  • Costin Raiu— security researcher from Kaspersky Lab, who first found out that there are more WannaCry variants in the wild, created by different hacking groups, with no kill-switch ability.

Not only this, Benjamin DelpyMohamed Saherx0rzMalwarebytesMalwareUnicorn, and many others.

Multiple security researchers have claimed that there are more samples of WannaCry out there, with different ‘kill-switch’ domains and without any kill-switch function, continuing to infect unpatched computers worldwide.

How to Protect Yourself from WannaCry Ransomware?

Here are some simple tips you should always follow because most computer viruses make their ways into your systems due to lack of simple security practices:

1. Always Install Security Updates

If you are using any version of Windows, except Windows 10, with SMB protocol enabled, make sure your computer should always receive updates automatically from the Microsoft, and it’s up-to-date always.

2. Patch SMB (Server Message Block) Vulnerability

Since WannaCry has been exploiting a critical SMB remote code execution vulnerability (CVE-2017-0148) for which Microsoft has already released a patch (MS17-010) in the month of March, you are advised to ensure your system has installed those patches.

Moreover, Microsoft has been very generous to its users in this difficult time that the company has even released the SMB patches (download from here) for its unsupported versions of Windows as well, including Windows XP, Vista, 8, Server 2003 and 2008.

Note: If you are using Windows 10, you are not vulnerable to SMB vulnerability.

3. Disable SMB

Even if you have installed the patches, you are advised to disable Server Message Block version 1 (SMBv1) protocol, which is enabled by default on Windows, to prevent against WannaCry ransomware attacks.

Here’s the list of simple steps you can follow to disable SMBv1:

  1. Go to Windows’ Control Panel and open ‘Programs.’
  2. Open ‘Features’ under Programs and click ‘Turn Windows Features on and off.’
  3. Now, scroll down to find ‘SMB 1.0/CIFS File Sharing Support’ and uncheck it.
  4. Then click OK, close the control Panel, and restart the computer.

4. Enable Firewall & Block SMB Ports

Always keep your firewall enabled, and if you need to keep SMBv1 enabled, then just modify your firewall configurations to block access to SMB ports over the Internet. The protocol operates on TCP ports 137, 139, and 445, and over UDP ports 137 and 138.

5. Use an Antivirus Program

An evergreen solution to prevent against most threats is to use a good antivirus software from a reputable vendor and always keep it up-to-date.

Almost all antivirus vendors have already added detection capability to block WannaCry, as well as to prevent the secret installations from malicious applications in the background.

6. Be Suspicious of Emails, Websites, and Apps

Unlike WannaCry, most ransomware spread through phishing emails, malicious adverts on websites, and third-party apps and programs.

So, you should always exercise caution when opening uninvited documents sent over an email and clicking on links inside those documents unless verifying the source to safeguard against such ransomware infection.

Also, never download any app from third-party sources, and read reviews even before installing apps from official stores.

7. Regular Backup your Files:

To always have a tight grip on all your important documents and files, keep a good backup routine in place that makes their copies to an external storage device which is not always connected to your computer.

That way, if any ransomware infects you, it cannot encrypt your backups.

8. Keep Your Knowledge Up-to-Date

There’s not a single day that goes without any report on cyber-attacks and vulnerabilities in popular software and services, such as Android, iOS, Windows, Linux and Mac Computers as well.

So, it’s high time for users of any domain to follow day-to-day happening of the cyber world, which would not only help them to keep their knowledge up-to-date but also prevent against even sophisticated cyber-attacks.

What to do if WannaCry infects you?

Well, nothing.

If WannaCry ransomware has infected you, you can’t decrypt your files until you pay a ransom money to the hackers and get a secret key to unlock your file.

Never Pay the Ransom:

It’s up to the affected organizations and individuals to decide whether or not to pay the ransom, depending upon the importance of their files locked by the ransomware.

But before making any final decision, just keep in mind: there’s no guarantee that even after paying the ransom, you would regain control of your files.

Moreover, paying ransom also encourages cyber criminals to come up with similar threats and extort money from the larger audience.

So, sure shot advice to all users is — Don’t Pay the Ransom.

“Given the high profile of the original attack, it’s going to be no surprise at all to see copycat attacks from others, and perhaps other attempts to infect even more computers from the original WannaCry gang. The message is simple: Patch your computers, harden your defences, run a decent anti-virus, and – for goodness sake – ensure that you have secure backups.” Cyber security expert Graham Cluley told The Hacker News.

Source: thehackernews, indianexpresskaspersky,  securelisttrendmicro, Microsoft

Ransomware

Ransomware is a sophisticated piece of malware that blocks the victim’s access to his/her files.

There are two types of ransomware in circulation:

Encrypting ransomware, which incorporates advanced encryption algorithms. It’s designed to block system files and demand payment to provide the victim with the key that can decrypt the blocked content. Examples include CryptoLockerLockyCrytpoWall and more.

Locker ransomware, which locks the victim out of the operating system, making it impossible to access the desktop and any apps or files. The files are not encrypted in this case, but the attackers still ask for a ransom to unlock the infected computer.

Examples include the police-themed ransomware or Winlocker.

Ransomware Statistics 2016 [Infographic]

Ransomware-Statistics-2016

Source: armadacloud, Trendmicro