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Hi. I am Creeper. Catch me if you can. It was the ’50s! Back then, computers were big. Programmers used punching cards. One such programmer – Bob Thomas – experimented with self-replicating programs and created the Creeper. Fortunately, the worm could not self-replicate, but it did affect users of ARPAnet (one of the first computer networks’ community). From there, began a journey into the most dangerous realms of the Internet.
Let us check out the evolution of malware after taking a quick look at the difference between a worm and a virus.Worm vs Virus
A Worm is basically a program that can self-replicate across computers and other types of digital devices. A Virus needs to be attached to something like an application and needs a trigger, such as the execution of that application, to work for whatever intention it was created. In other words, worms are independent and can replicate without the need for any triggers. They can be downloaded with other programs. They can affect your computers bypassing through Flash drives. A virus uses plenty more methods in addition to the two mentioned here, to get into a computer and infect it. It requires some action to be taken by the user before it becomes active and does the work for which it is programmed.
These days, we do not hear about worms explicitly. We have a common word called Virus and even a more generic one – Malware. Since these days, the intentions of worms and viruses, plus other types of software like Spyware, etc. are malicious or bad, they are collectively called Malware. Unlike the beginning, where malware was the result of curiosity and experimentation, and the intention was merely to irritate, cause mischief or havoc, these days’ viruses are full programs that are intended to steal or destroy data. The intentions are bad as the industry creates malware for their benefits at your costs.Evolution of Malware and Viruses
Although WinVer 1.4 was said to be the first Windows virus, the first malware to be introduced to the world was the Creeper. It was not a malware by definition though. It simply displayed a message which would irritate users and as a result, the first anti-virus software was born. It was named Reaper and it was made to counter Creeper. There are different arguments saying this cannot be called malware as it could not replicate or cause damage to computers, but still, many accept Bob Thomas and his Creeper as the beginning of what later turned into a multi-billion industry of malware. Bob could not have even imagined that.
Anyway, the next malware was said to be Brain. It was developed by two Pakistan-based people in 1986. By this time, the general public too had fans of computers and there were many hobby groups and communities that were run using computers. The target of Brain was these communities. It targeted the boot sector of computers via a 5 1/4 inch floppy disks and showed just a message. It, too, was not intended to steal data or cause data loss in any way. It also gave the phone number of the malware developers – Basit and Amjad – so that people could ask them for help to remove the malware.
The first reference to a worm that caused damage (presumed to be because of a bug in the worm code) was Morris’ worm. It was developed by Robert Morris, a student at Carnell University. Again, as with the Creeper, people argued this was the first worm – as it could replicate. “Worms need to replicate else they are not worms”, people argue. This infected more than 5000 computers in the USA and caused damage between 100,000 and 10,000,000. The exact damage could not be estimated.
The biggest turn in the history of malware or its evolution was the LoveLetter worm. By that time, most organizations had computers working on MS-DOS or other similar operating systems. It was the year 2000 and the LoveLetters that contained an infected attachment which when, downloaded, infected the email program and sent a copy of the worm to people in recipients’ address book. Not only that, it overwrote certain file types with rubbish. By the time it was discovered as not being a prank and a serious threat, the damage was done. However, it educated people about malware and that people out there are not all good – but bad ones too who would want to play with the data they had on their computers.
A need for anti-virus software on every computer was stressed and was implemented slowly. Of course, those were small codes that kept on updating themselves as and when new worms or viruses are discovered.
The year 2001 saw the emergence of Red Code, a malware that targeted Microsoft IIS based systems. Normal antivirus could not find it as it was resident in the active memory of the computer. The worm could be detected only in transit. Traditional antivirus failed and the need arose for better ones that can scan all parts of a computer where such malware can reside: boot sector, memory, hard disks, application files, etc.
Then came Win32/Ninda which was a threat to Networks. It used network backdoors to spread and affected hundreds of thousands of computers and web servers. Many websites were compromised and provided as a source for further infections. By this time, Internet usage was in full swing. It is said the malware initiated around the attacks of Sept 11, 2001. Antivirus vendors went back to their drawing boards to create antivirus that could also monitor network ports, especially Port 80 – the one used to connect to the Internet and detection of other open or closed ports that they need(ed) to hide from the networks.
People were also educated about the possibilities of Spyware, Adware, etc and the collective term, Malware, was subsequently coined. You can read the difference between Virus, Trojan, Worm, Adware, Rootkit, etc, here.
Over the last two decades, both malware and anti-malware programs have become complex. Phishing became part of the Internet soon and antivirus had to scan complete emails – including the contents – to make sure there are no malicious URLs, etc.
We can say that in the last decade, especially, had seen a tremendous rise in dreaded virus problems, as well as good improvements in the antimalware solutions. There are many free antivirus software and free Internet Security Suites, that act as well as the paid options. One now needed to take an integrated approach to fight malware, and hence Firewalls, Heuristics, etc, were also made a part of the arsenal.
There are competing claims for the innovator of the first antivirus product. Possibly the first publicly documented removal of a computer virus in the wild was performed by Bernd Fix in 1987. By the end of 1990, there were a number of anti-virus products available.
If you’d like to find out more about how malware grew in time, download this PDF copy of the Malware History whitepaper from BitDefender. There is also a lot of information at Microsoft, on the evolution of malware and malware trends.
Ransomware, Rogue software, Rootkits, Botnets, RATs, Malvertising, Phishing, Drive-by-download attacks, Online Identity Theft, are all here to stay now. New technologies that have emerged or are emerging, including but not limited to BYOD and the Internet of Things will be attacked. Malware has also started focusing on Social Media. While good security software will help you stay protected, it is equally important to carry out safe Internet and Browsing practices.
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Now, you might wonder, where can Android phones pick up malware? Android operates on an open-source platform. This allows you to download files and apps from various sources. And apps and files from third-party sources are generally unsafe for the Android system. Some of them can be configured in a way to get a hold of your sensitive data.
What is Mobile or Android Malware?
Before you get to know how to remove malware from Android devices, it would be better to have a good understanding of malware. Android or mobile malware, often mistaken for viruses, includes Trojan horses, worms, and spyware. And they are a lot different than viruses.
What Makes Malware Different from Virus
Malware is basically an umbrella term. Any malicious software or program that enters your device without your consent can be termed malware. Considering that, you can say that virus is a type of malware. It attaches itself to a program, which can range from media files to applications to documents.
Examples of Malware That Has Attacked Android Phones in the Past
There are tons of Android malware out there. But some of them are more common than others. Here’s a brief description of the ones that have caused a ruckus on phones in the past:
This is ransomware that came to light in 2023. And as ransomware, it locked all the files and forced the owners to pay to access them.
It is a Trojan horse that can secretly send multiple text messages. This malware also has the ability to ask for administrator rights on the device. And if you grant the rights, it gets exclusive access to everything.
Loki Bot Spyware
This is another Trojan horse that can steal your usernames and passwords. In addition, it can access highly sensitive data, including your banking info and other credentials.
How Vulnerable Is Your Android Phone to Malware?
Android phones, in general, are more vulnerable to malware than iPhones. After all, the iOS of iPhone is closed-source. That closed ecosystem hinders users from downloading and installing third-party apps.
But over time, the Android security system has seen multiple upgrades. Even so, malicious app developers find a way to bypass Android’s security and install their malware on your phone.
Nonetheless, the main thing is that the more updated your Android phone is, the less vulnerable it is to being attacked by malware. And the less updated or older your device is, the more vulnerable it will be to malware attacks.
How Can You Tell If Your Android Phone Has Malware
There are some classic signs that can tell you whether your Android phone has been infected with malware. They are:Gizchina News of the week
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Apps will stop functioning properly and will crash more often
There will be increased data or resource usage
Your device will send texts and links to the saved contacts without you knowing
The Android phone’s battery will start to drain rapidly
Your device can get excessively hot without you doing anything
There can be strange apps in your app library
You get redirected to different web pages on your browser
How to Remove Malware from Android
Noticing the classic signs of malware on your Android device? Here are the steps that you can take to remove malware from Android:
Scan and Remove Malware with Your Android Phone’s Built-in Security Program
Most Android phones these days will come with a dedicated security program. For example, Samsung has Device Care, and Xiaomi has Security Scan. Check whether your phone has such a program and do a full system scan. See if the program has detected threats. If so, remove the threats immediately.
Use Android Safe Mode to Remove Malware
To get into Android safe mode, hold onto the power button and wait for the power menu to show up. Once it does, tap and hold onto the “Power off” or “Shut down” option. The Android phone will then reboot to safe mode. Observe if your phone is working normally.
If not, you need to manually go through all the installed apps and uninstall the suspected apps. Some Android apps may not want to uninstall. In that case, you will need to use ADB or a Debloater tool.
Clear Your Browser Cache and Enable Google Play Protect
Applications store website cache to make the sites load faster when you revisit them. Clearing them may make the sites load a little slower when you visit them again. But with the cache cleanup, you can also erase the connection between your phone with malicious websites.
Also, you should enable Google Play Protect. It scans every app you install regardless of where you have downloaded them. To enable it, get into Google Play Store, tap on your profile, select Play Protect, and turn on Google Play Protect.
What is malware?
Malware is an umbrella term for any form of “malicious software,” including viruses, spyware, and ransomware. There are also a number of ways to get infected with malware, like phishing emails, Trojans, and hacking attempts. Either way, once malware is on your device, it might steal your identity, install unwanted programs, or hold your files for ransom.
Trojan horses are malicious softwareTrojans
Computer Viruses are malicious softwareViruses
Spyware are malicious softwareSpyware
Worms are malicious softwareWorms
Document overlapped by a lock with a dollar sign in the centerRansomware How does Malwarebytes Premium protect me against cyberthreats?
Stops malware, adware, and other online threats with multiple layers of security, including real-time protection
Identifies and removes existing infections with a quick, comprehensive scan of your deviceWill using Malwarebytes slow down my device?
Malwarebytes keeps your device running fast, without the hassle
Runs in the background 24/7 with minimal impact on performance so you can stay safe without slowing down your computer or fiddling with your security software
Uses simple controls that make it easy to customize your security
Improves performance by removing potentially unwanted programs (PUPs) that make your computer run poorly and disrupt your online experienceHow is Malwarebytes different from traditional antivirus software?
Malwarebytes does what traditional PC and Mac antivirus programs can’t, like detect emerging threats
Uses artificial intelligence to identify emerging threats so you’re safe from threats the moment they come out
Removes all traces of malware on your device so you can be sure your device is cleanHow do I know if I’m infected with malware?
Look for issues characteristics of a malware infection:
Does your web browser freeze or become unresponsive?
Do you get redirected to web pages other than the ones you are trying to visit?
Are you bombarded with pop-up messages?
Does your computer run slower than usual?
Do you see new icons on your desktop that you don’t recognize?Okay, I’m infected with malware. What do I do now?
Remove CDs and DVDs and unplug drives from your computer. Restart in Safe Mode.
Download a proven malware scanner such as Malwarebytes Premium.
Disconnect from the Internet, then run a scan.
Follow Malwarebytes Premium’s instructions to remove any malware.
Restart your computer.
Update your operating system, browser, and applications if not current.
Reset all of your passwords.
When it comes to computers, it’s always important to have a clear understanding of the difference between viruses and malware. In terms of definition, a virus is simply a type of malware. This means that technically speaking, if you say that your PC has been infected with malware is more accurate than saying it’s been infected with a virus — it just happens that the word “virus” is a more widely adopted term.
Malware can infect desktop computers, tablets, laptops, and mobile devices, no matter the kind of operating system you’re running.Commonly known malware Viruses
A computer virus is one of the most common and recognizable type of malware. A virus is a set of malicious code that is capable of replicating itself across the network between shared computers, and it’s intended to cause harm to a computer system, such as making your system almost impossible to use and in most cases corrupting system files.
Typically, a virus runs when someone executes an infected program from an email attachment, from a software that was downloaded from an untrusted source, or someone boots from an infected storage device.
Often the end-user won’t know their computer has been infected until the virus kicks in and takes over the machine.Worms
This type of malware can replicate itself, but it’s meant to be more disruptive. Once a worm takes of a system, it will destroy files and information stored on the computer.Trojans
This is typically a malware designed to make you think it’s a safe software to gain access to your system. Trojans are usually coded to steal your personal information, such as banking information, sign-in passwords, and various of personal information.
Unlike viruses and worms, Trojans are not known to infect files stored on a computer or spread between computers. They’re generally distributed through email attachments and software download that look legit and safe.Spyware
They are also difficult to detect as they can discretely hide inside the victim’s computer. Some spyware, such as keyloggers can be installed on systems to monitor users.
Similar to Trojans, Spyware are also capable of collecting any kind of information, including internet activities, personal information, bank account information, and a lot more.
In addition, Spyware can also disrupt users and control computers by installing unwanted software or redirecting users to unwanted sites. They can also change the computer settings and make an internet connection very slow.Adware
These programs are generally no meant to cause harm to a computer, but they can be extremely annoying, and they can affect user experience and performance.Ransomware
There are a few other ransomware variants that are more simple. Some ransomware my simply lock a system, which may not be very difficult for a tech-savvy person to get around the malware without having to issue a payment to unlock the system.
Usually attackers will try to deliver a ransomware using a Trojan that disguises the payload as a legitimate file.
Recent and most popular examples of ransomware are CryptoLocker and CryptoWall, both of which have been taken down by authorities.Rootkit
Rootkit is not defined as a malware, instead it’s a set of malicious software designed with the purpose to enable an unauthorized user to gain control of system without the victim’s knowledge.Wrapping things up
We depend on our computers and mobile devices to make purchases on the internet, check bank account information, communicate with other people, and much more. On an online world staying protected from malware requires being aware of the threats and having the proper tools to prevent your system from getting infected and block attackers from stealing your information.
When your computer gets infected with high persistent virus or rootkit, remember that you can use Windows Defender to scan your device offline and remove any threats. On Windows 10, you can also use Windows Defender alongside third-party antivirus using the Limited Periodic Scanning feature.
With more people working from home full-time, it’s common to have Zoom open all day. But you might not realize that there are dozens of shortcuts that can improve your user experience and boost your efficiency.
In this article, we’ll cover all of the Zoom shortcuts for Windows, Mac, Linux, and iOS, as well as how to use them.
Table of ContentsZoom Shortcuts for Windows, Mac, and Linux
Zoom has various shortcuts available for every supported platform. These accessibility settings are designed to save time and effort in Zoom meetings.
For shortcuts to work on Windows, you must be using the Zoom desktop client version 5.2.0 or higher. Additionally, all keyboard shortcuts can be viewed and customized. To change your shortcuts:
Select any shortcut and press the key you would like to use for it.
With that out of the way, here are the default shortcuts:General Shortcuts
To switch between open Zoom windows, press F6 on Microsoft Windows, Ctrl + T on Mac, and Ctrl + Tab on Linux.
To shift focus to Zoom’s meeting controls, press Ctrl + Alt + Shift on Windows.Meeting Shortcuts
Hold key to talk while muted: Spacebar on Windows, Linux, and Mac.
Show or hide meeting controls: Alt on Windows and Linux, and Ctrl + / on Mac (this toggles the Always show meeting controls option).
Switch to the active speaker view: Alt + F1 on Windows and Command + Shift + W on Mac (depending on the current view).
Switch to the gallery view: Alt + F2 on Windows and Command + Shift + W on Mac (depending on the current view).
Close the current window: Alt + F4 on Windows and Command + W on Mac.
Start/stop video: Alt + V on Windows and Linux, and Command + Shift + V on Mac.
Unmute or mute audio: Alt + A on Windows and Linux, and Command + Shift + A on Mac.
Mute or unmute audio for everyone except for the host (only available to the meeting host): Alt + M on Windows and Linux, and Command + Control + M on Mac (and Command + Control + U to unmute).
Share screen (meeting controls need to be in focus): Alt + S on Windows and Linux, and Command + Control + S on Mac.
Pause or resume screen sharing (meeting controls need to be in focus): Alt + T on Windows and Linux, and Command + Shift + T on Mac.
Start or stop local recording of the meeting: Alt + R on Windows and Linux, and Command + Shift + R on Mac.
Start or stop cloud recording: Alt + C on Windows and Linux, and Command + Shift + C on Mac.
Pause or resume recording: Alt + P on Windows and Linux, and Command + Shift + P for Mac.
Switch camera: Alt + N on Windows and Linux, and Command + Shift + N on Mac.
Toggle fullscreen mode: Alt + F on Windows, Command + Shift + F on Mac, and Esc on Linux.
Toggle the in-meeting chat panel: Alt + H on Windows and Command + Shift + H on Mac.
Show or hide participants panel: Alt + U on Windows and Linux, and Command + U on Mac.
Open invite window: Alt + I on Windows and Linux, and Command + I on macOS.
Raise or lower hand in the meeting: Alt + Y on Windows and Linux, and Option + Y on Mac.
Read the active speaker’s name: Ctrl + 2 on Windows.
Toggle floating meeting control toolbar: Ctrl + Alt + Shift + H on Windows and Ctrl + Option + Command + H on Mac.
End or leave meeting: Alt + Q on Windows and Command + W on Mac.
Gain remote control: Alt + Shift + R on Windows and Linux, and Control + Shift + R on Mac.
Stop remote control: Alt + Shift + G on Windows and Linux, and Control + Shift + G on Mac.
View the previous 25 video streams in gallery view: PageUp in Windows.
View the next 25 streams in gallery view: PageDown in Windows.Chat Shortcuts
Take a screenshot: Alt + Shift + T on Windows and Linux, and Command + T on Mac.
Toggle portrait or landscape view: Alt + L on Windows and Command + L on Mac.
Close current chat: Ctrl + W on Windows and Linux.
Open previous chat: Ctrl + Up on Windows.
Open the next chat: Ctrl + Down on Windows.
Jump to the chat window: Ctrl + T on Windows and Command + K on Mac.
Search within the chat: Ctrl + F on Windows.Phone Call Shortcuts
Accept the inbound call: Ctrl + Shift + A on Windows, Linux, and macOS.
End the current call: Ctrl + Shift + E on Windows, Linux, and macOS.
Decline the inbound call: Ctrl + Shift + D on Windows, Linux, and macOS.
Mute or unmute microphone: Ctrl + Shift + M on Windows, Linux, and macOS.
Hold or unhold current call: Ctrl + Shift + H on Windows, Linux, and macOS.
Call the number highlighted: Ctrl + Shift + P on Windows and Ctrl + Shift + C on Mac.Zoom Shortcuts for iOS
The iOS Zoom app also has a handful of shortcuts that you can use if you’re accessing Zoom from an iPad or iPhone with a keyboard. These are:
Command + Shift + A: Mute or unmute audio.
Command + Shift + V: Start or stop video.
Command + Shift + H: Display or hide chat.
Command + Shift + M: Minimize the meeting.
Command + U: Toggle participants list.
Command + W: Close the participants or settings window (whichever is open).Taking Efficiency to the Next Level
That’s every Zoom keyboard shortcut for the Windows, Mac, Linux, and iOS apps. With these hotkeys, you can improve your overall user experience, save time, and become a videoconferencing pro.
In this tutorial, I’ll discuss the difference between ALL and ALLSELECTED DAX functions when calculating the percentage of total in Power BI. The difference between these two DAX functions can be relatively confusing when you’re just starting out with Power BI. Hopefully, this tutorial can give you some clarity on this matter. You can watch the full video of this tutorial at the bottom of this blog.
I got this idea from a video that did an introduction about the ALL function. You can check that video from the Enterprise DNA Youtube Channel here.
In that video, the speaker compared the date versus the total sales using the ALL function. Here, I’m going to take that example one step further and show how to either use the ALL or ALLSELECTED function when calculating the percentage of total sales. This could be by date or by customer.
I’m going to use a Division example in this tutorial.
Basically, Division is like a job type.
I also placed a slicer at the top right part just to show that these results are from year 2023.
And this shows the Invoiced amount for each of the following Divisions.
I also provided a slicer for the Division that we’ll use later once we add the percentage of total invoiced using either the ALL or ALLSELECTED function.
This TREATAS Measures here is where I stored all my invoice measures.
The Invoiced measure is the first measure within my table.
This measure calculates the Invoiced amount, which is the Total Estimates.
I also used the TREATAS function because there’s no relationship between the Date table and the Jobs table, so I created that relationship virtually, instead.
And that’s how I created the Invoiced amount.
Now what I’ll do is to take the Invoiced using the ALL function.
This calculates the sum of all the amount Invoiced using the Invoiced measure that I previously discussed. I also used the ALL function to display all the results by Division in the Jobs table.
By adding the Invoiced ALL measure to this table, it only displays the total amount of invoice for each one of these rows.
So, that’s what the ALL function does. It returns all the rows in a table, or all the values of a column while ignoring any existing filter that might have been applied.
After adding the Invoiced ALL measure to the table, the next thing that I want to do is to show the percentage of total sales for each one of these Divisions for the year of 2023.
To do that, I created another measure which I named as ALL Invoiced%. In this measure, I just divided the Invoiced measure by the Invoiced ALL measure.
Then, I’ll add that measure to the table. As you can see, it’s actually working correctly based on the results for Reconstruction Division. It shows that it has $775,766 out of $1,866,767, which makes sense for a percentage total of 41.56%.
But what if I only want to select a certain Division?
For example, I’ll use my slicer here so the table will only display the Reconstruction and the Mold Remediation divisions.
Noticeably, the ALL Invoiced% column is still displaying the same percentage.
It’s not showing the expected results that I want. This is because it’s basically just taking the Invoiced result divided by the Invoiced ALL result to get the percentage value.
What I want is to show the percentage of the Reconstruction and Mold Remediation out of the current total Invoiced amount.
This is where the ALLSELECTED function comes in.
I’ll unselect the Reconstruction and Mold Remediation selections for now. Then, let’s check out another measure that I created for Invoiced using the ALLSELECTED function. I named it Invoiced ALLSELECTED.
In this measure, I used the measure branching technique again. But instead of using the ALL function, I used the ALLSELECTED function.
I’ll add that measure again to the table. As you can see, the Invoiced ALLSELECTED column is showing the same amount as Invoiced ALL.
This is because by default, all the Divisions are selected in this model and I haven’t used the slicer yet.
I also created a measure named ALLSELECTED Invoiced% to get the percentage of total sales for each one of these Divisions for the year of 2023.
It’s similar to the ALL Invoiced% measure, but I used the ALLSELECTED function here instead of the ALL function.
Upon adding that to the table, you’ll see that it’s showing similar results from the ALL Invoiced% column.
However, here’s where the trick of this tutorial comes in. I’ll use the Division slicer again and select Reconstruction and Mold Remediation.
And you’ll see that the result of the ALLSELECTED Invoiced% column is now different from the ALL Invoiced% column.
The ALL Invoiced% column is only displaying 44.40%, because it’s still calculating the Invoiced amount of the other divisions even though they’re not selected.
On the other hand, the ALLSELECTED Invoiced% column where we used the ALLSELECTED function displays a 100% total. This is because it’s only calculating the Invoiced amount of the selected divisions.
This correctly shows that the Mold Remediation division makes 6% and the Reconstruction division makes up the 93% and a half of the $828,925 current total of Invoiced from both divisions.
To sum up, this is the difference between the ALL and the ALLSELECTED function. In this example, I’ll select more Division to further see the difference.
After selecting the Water Mitigation division, the numbers under the ALLSELECTED Invoiced% and ALL Invoiced% columns displayed a noticeable change.
That’s all I wanted to share in this tutorial. This valuable tip can definitely help you in calculating the correct percentage of total, whether it may be invoiced or total sales. Moreover, I hope this tutorial has given you the clarity on the difference between the ALL and ALLSELECTED functions in Power BI.
Check out the links below and our website as well for more examples and related content.
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