THREAT REMOVAL

Alert Booster Club calendar virus removal guide stfThe so-called Calendar virus is a common threat name that refers to a group of specific suspicious apps currently affecting Apple devices. Affected devices could be iPhones, Mac computers, and iPads. This type of virus app impacts the Calendar app of these devices. Most users are complaining that this unwanted app affects their iPhones.

iPhone Calendar Virus

If your calendar is affected by such a calendar virus that triggers faulty notifications, you should avoid interacting with them. All the messages generated by the so-called Calendar virus display fake information with the only purpose to trick you into performing specific actions that could put your device and personal information in jeopardy. You could be flooded with advertisements about fake and rogue products that display even more pop-ups and notifications. In truth, this could turn into an endless process that you triggered unknowingly by clicking on a suspicious pop-up or notification.

Perhaps you are wondering why you are receiving Calendar virus notifications on your iPhone. It could be a potentially unwanted app (PUA) causing them. A recommended method to determine whether you have a PUA running in the background of your device is by scanning it with a specific software. We’ve provided easy-to-follow instructions at the end of this article which should help you in this process.

Threat Summary

NameCalendar virus
TypeAdware/PUA for iOS
Short DescriptionAims to modify operating system settings to display scam notificaitons in the calendar app.
SymptomsThe affected device begins to display various types of notifications in the Calendar. This issue causes slowdowns and exposes the system at risk of various infections.
Distribution MethodSoftware Packages, Freeware, Shady Websites

The so-called Calendar virus is typically associated with a website designed to trigger these annoying notifications on iPhone, Mac and iPad devices. These notifications are related to various deceptive messages, and they tend to appear in the calendar app. It is highly possible for these websites to be hosting suspicious online ads, scam messages, and potentially unwanted apps.

The iPhone Calendar virus has been detected to still be very eventful and attack the following types of devices:

  • Mac.
  • Macbook.
  • Macbook Air.
  • iPhone 11.
  • iPhone XR.
  • iPhone XS
  • iPad Pro

Typically, new messages by the Calendar virus appear in the calendar every few hours, which could be very annoying. As for the messages, in most cases, they try to convince you that you should download a system cleaner that will remove detected viruses, or enter a given site to learn how to receive a special gift, etc.

Here is a list of the most common messages generated by the Calendar virus. It is noteworthy that some notifications designed for iPhones also appear on macOS. This is another definitive sign of scam behavior:

  • Viruses on your iPhone?! CLEAN THEM NOW
  • Its your lucky day
  • Ensure Your Online Protection, Click Now!
  • You have (1) Pending Package
  • Your Phone is not Protected! Click to protect
  • Clear your iPhone from Malicious Attacks!
  • Who wants a Free Apple Music Subscription?
  • (1) Congratulations, you won!

We have detected several websites that are spreading the Calendar virus. Here is a list which will be updated with new threats if such appear:

Unfortunately, when you start seeing these viruses alters in the calendar, you may not be able to decline and delete them at ease. The end purpose of these spam sites and fake messages and notifications is to trick you into visiting suspicious content, downloading rogue or malicious software, entering sensitive credentials, or calling a fake tech support number. In any case, be extremely careful and don’t click on anything associated with the websites listed above.

How did the so-called Calendar virus start appearing on your iPhone?

Infection with the Calendar virus can be caused by a malicious entry added to the installed calendar app. Other reasons include clicking on a link on a suspicious website; an unexpected browser redirect that activates the scam with the help of scripts; an unnoticed installation of adware or another potentially unwanted application. All methods enable the Calendar virus to affect your device without your knowledge.

Did you know? Sometimes you may authorize the installation of a profile on your phone without knowing that you agree to such a process. This may be the case with the endless, spammy calendar notifications. One thing you can do to fix the issue is to go to Settings -> Passwords & Accounts and check if a rogue calendar is listed under Accounts. If it is, then tap on it and Delete account. It is also good to check Settings -> General -> Profiles, and see if there is anything unusual listed there as well.

For the sake of your online security and data privacy, you should definitely scan your affected system with an advanced anti-malware tool to ensure that no PUPs are running on it. Specific instructions are included in the next paragraph.

How to Remove Virus from Calendar on iPhone

In order to clear your iPhone from malicious Calendar attacks, you need to complete several removal steps. The guide below reveals all essential removal steps in their precise order. In order to strengthen iOS security after you fully get rid of files installed by undesired programs, we recommend that you use a reliable password manager app.

Since you may have signed in to your iCloud with the same Apple ID on all of your devices, you may need to check and clean all of them including your iPhone, iPad, and iPod touch.

A bonus tip: After you finish with the guide below make sure to set your default calendar.

Instructions for iPhone, iPad, or iPod touch:

    1. Go to Settings > Select Calendar.
    2.Tap Default Calendar.
    3.Choose the calendar that you want to use as your default.

For your Mac:

    1.Open Calendar (or iCal).
    2.Click Calendar in the menu bar and choose Preferences.
    3.In the General tab, choose the calendar that you want to use from the Default Calendar menu.

On iCloud.com:

    1.Go to Calendar > Click the gear icon > Preferences.
    2.Choose the calendar that you want to use from the Defaults menu.
    3.Click Save.
Milena Dimitrova

Milena Dimitrova

An inspired writer and content manager who has been with SensorsTechForum since the beginning. Focused on user privacy and malware development, she strongly believes in a world where cybersecurity plays a central role. If common sense makes no sense, she will be there to take notes. Those notes may later turn into articles! Follow Milena @Milenyim

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OFFER
REMOVE IT NOW (MAC)
with Combo Cleaner

We recommend you to download Combo Cleaner and run free scan to remove virus files on your Mac. This saves you hours of time and effort compared to doing the removal yourself.
Combo Cleaner’s scanner is free but the paid version is needed to remove the malware threats. Read Combo Cleaner’s EULA and Privacy Policy


Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

Get rid of Calendar virus from Mac OS X.


Step 1: Uninstall Calendar virus and remove related files and objects

OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy


1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:


2. Find Activity Monitor and double-click it:


3. In the Activity Monitor look for any suspicious processes, belonging or related to Calendar virus:

Tip: To quit a process completely, choose the “Force Quit” option.


4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.


5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to Calendar virus. If you find it, right-click on the app and select “Move to Trash”.


6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to Calendar virus. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.


7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove Calendar virus via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as Calendar virus. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.


Step 2: Scan for and remove malware from your Mac

When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.



Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove Calendar virus from Google Chrome.


Step 1: Start Google Chrome and open the drop menu


Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"


Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.


Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.


Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Erase Calendar virus from Mozilla Firefox.

Step 1: Start Mozilla Firefox. Open the menu window


Step 2: Select the "Add-ons" icon from the menu.


Step 3: Select the unwanted extension and click "Remove"


Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.



Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Uninstall Calendar virus from Microsoft Edge.


Step 1: Start Edge browser.


Step 2: Open the drop menu by clicking on the icon at the top right corner.


Step 3: From the drop menu select "Extensions".


Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.


Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.



Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Delete Calendar virus from Safari.


Step 1: Start the Safari app.


Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.


Step 3: From the menu, click on "Preferences".

stf-safari preferences


Step 4: After that, select the 'Extensions' Tab.

stf-safari-extensions


Step 5: Click once on the extension you want to remove.


Step 6: Click 'Uninstall'.

stf-safari uninstall

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the Calendar virus will be removed.


How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.


Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Eliminate Calendar virus from Internet Explorer.


Step 1: Start Internet Explorer.


Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'


Step 3: In the 'Manage Add-ons' window.


Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.


Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.


Calendar virus FAQ

What is Calendar virus?

Calendar virus is classified as a potentially unwanted app for Mac. It appears like a normal app, but it may cause unpleasant pop-ups and redirects on your Mac.

Be aware, that Calendar virus may be able to affect the browsers Safari, Google Chrome, Mozilla Firefox, Edge and Opera. It may they perform unwanted activities on your Mac.

Such can turn out to be showing advertisements of all types, slowing down your Mac's performance and even infecting your Mac with other viruses by showing you dangerous ads.

Is Calendar virus a Virus?

No, but it is just as risky. The Calendar virus object is not entirely a virus but it is still as dangerous as a virus for your Mac and your information. The main reason for that is because Calendar virus can use cookies and other tracking technologies that may obtain personal information from your Mac while you are browsing.

It may also cause dangers and may lead to risky websites, such as:

  • Phishing sites.
  • Web pages that are scam.
  • Sites that may contain viruses.

These are the main reasons why threatening is considered by experts to be indirectly dangerous to your Mac.

Can my Mac get virus?

The answer to this question is "yes". Unfortunately it opened happens that Mac devices become infected with different types of malware, adware and other threats. This causes a lot of problems for both companies and users.

How did I get Calendar virus?

Calendar virus could be spread to Mac computers via several methods. One of those methods is via the installers of third party apps. This technique is called software bundling.

Also, Calendar virus adware could be included in the installer steps of an app you may have downloaded for your Mac from a third party website. Search app could be a media player or some other free software you may have tried to recently install.

You may have missed Calendar virus, because it could be hiding in one of the install steps or could be offered as a "free extra" or an "optional offer".

How to remove Calendar virus from my Mac?

By removing its core files. To get rid of Calendar virus from your Mac, security experts strongly advise to scan it with a professional anti-malware app for Mac.

An anti-malware security app has the capability of scanning all of the areas in your Mac were Calendar virus could be residing.

It will also make sure that Calendar virus is permanently gone from your Mac and that your Mac is safe in the future.

How to protect my Mac from viruses?

To protect your Mac from all sorts of virus threats, you can can minimize the risk of getting a virus in the first place. This is why we strongly recommend that you take the following steps for protection on your Mac below:

1. Register for a VPN service of your choice.
2. Clear the cookies that are on your web browsers and uninstall any browser extensions from them that you believe are suspicious.
3. Download and install reputable malware removal and protection software.
4. Always check if the website you're visiting has HTTPS instead of just HTTP in its address. This indicates that a site is secure.
5. Do not type any personal info on websites which are with low reputation or you can't trust.
6. Always check if the site you're visiting is the real web page at not a fake one by looking at the address bar. Many fishing websites that contain viruses change one or two letters in the main domain name of the site they're trying to mimic.
7. Always link your cell phone phone to your Bank Accounts, PayPal, Facebook, Gmail, Instagram and other accounts. This will allow you to see notification if somebody else logged in from your account and makes account hijacking nearly impossible.
8. Always find a way to backup all your important files regularly. You can save them on a USB stick or use Cloud backup services, like Google Drive. iDrive, Onedrive and others.

1 Comment

  1. AvatarMiroslal Pevlvich

    Wow, So easy with your instructions. I did it, remove this annoying calendar event scam with you manual instr. Great guide:) Thank you

    Reply

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